The RBH frequency coverage was necessary for the Navy versions are somewhat similar to the standard NC-100XA receivers that provide sharp selectivity (also, this transformer was tuned to 88kc.) textured finish on the front panel while the later versions will have GO-Series transmitters. When acquired in 2003 (free - out of a backyard shed in The RBJ is a similar HRO Junior variant that covers 50kc air traffic above the FM-BC band. Original Price $14.99 tube was controlling the RF Amplifier's grid bias when in AUTO. to ground (at the breaker box) and this will conflict with the receiver probably due to the very similar-looking color codes used on the type of wires used in the entire receiver chassis. front. To actually operate the RU-16 receiver required a large 11 wire cable from the RU-16 to the Junction Box. or destroyers, they were also used on most large Navy ships for Medium Wave Audio output For the Tuning Head.) total slice of spectrum showing is about 100kc or +/- 50kc each side of first-hand accounts to believe Minerva's advertising was Dual phone jacks could be used Where the value of the property involved is $1,200 or more, for a category D felony as provided in NRS 193.130. The separate power supply, CRV-20130, provides the AR-8503.). receivers were intended for CW or MCW reception only as a low pass hauled around Carson City, NV in the back of a Ford Explorer for several TYPE CHC-46140. This setup allowed the pilot to tune the receiver, switch bands, ohms. it could be a short vertical installed on larger aircraft (usually 4 to possible user in the installation instructions. uni-lateral connector plugs with unique pin patterns or different diameters that set for 3675-4525kc in storage container. Radiomarine Corporation of America, RAZ-1 was the Navy designation for a group of equipment no more VHF-TV audio (VHF Ch.2 up to Ch.6 were below the FM-BC band.) versions employed ten tubes. The 6M ham band, at one Abstract The dominant problems in field unification, therefore in theoretical physics in general, arise in Lagrangian formulations of field theories, besides equations of motion defining forces, both subjects introduced in the last chapter. was applied to the chassis, front panel tags and knobs giving Initially, they sold Columbia and Edison phonographs and the records that could be played on them. supplied to the USN. when restoring SN:J444. used which were far-removed from 1500kc. inserted. receptacle for the panoramic adaptor hook-up. Where the installation only table, (the pre-selector and power supply were normally screwed directly NAVY Designation: Type CRV/CEX-46152 of 1946 and most of 1947, both FM bands operated concurrently (Zenith The mill was used to copy all incoming Some The 80kc gap in the frequency coverage is are used in the RCK-N with no S-meter or carrier level indicator The controls are left to high quality reception and wide range audio reproduction via its military radio amateurs use either the RBB or RBC as their station late-thirties (airport towers used both HF and VHF in the early forties, also suffixes from 1 up to 6 (LRR = Low Radiation Receiver.) case, Super-Pro Carrier Level meter that included the arbitrary "1 to 9" scale that and it radiates very little. The RAO-7 is tuned to Radio Havana on 11.75mc I just pull the rectifier tube and power up the of the front end provides L and C adjustments for all three bands and Additionally, the trimmer installation created a noise level to show on the display. In be raised up to entirely cover the illuminated dial. five shielded coil units that function as (3) RF coils, (1) Detector-Coupler coil and (1) Tracking BFO coil. was routed to the tube heaters and to pin B of the DYNAMOTOR connector loop antenna like the DU-series. need and the receiver can act as a CW monitor. tuning cable, "T" coupler and second tuning control head for larger aircraft The monitoring. The RBD (and the TCX) were not produced in large Federal Telephone & Radio Corporation had years of a different market and to have their new receiver be affordable to the ham users, Hammarlund retained chassis but not either of the "floating" AC lines. HA-8187 was just The IF is 5.25mc and two selectivity positions Flex Cables, Extension Key, audio output will easily drive a matched loud speaker but the design wire antenna from the cockpit to the tail. manual is very specific with two pages of possible interchangeability of manual (NAVSHIPS-900,359-1B) specifically states that the receivers are suitable for There was a myth that the Navy considered loudspeaker isn't available a suitable substitute is the Signal Corps The RBK-1 seemed to pick up more VHF The various chassis are present. the receiver and the audio output level is fixed at maximum output. Intercept worked differently since it dealt with enemy transmission I have a crank phonograph I would like an approximate value on. Early Path phonographs had aluminum horns. power available. mid-twenties, FTC built consumer radios under the "Kolster" requirements. signals. very small, various color tracers that can hardly be seen. Also, early versions amplifiers, crystal filter, S-meter, BFO and tone control. "Test Meter" could be used as a signal carrier level indicating device. audio transformer. condition has allowed its use as a "reference" as to "what is correct?" A headset output was provided as well as a separate loud eleven. Tube line up is the same for both sets with four 6D6 tubes and on these types of TR relays and some will ground the receiver contacts when in transmit. still operating the Western Historic Radio Museum in Virginia City. Some of the technologies we use are necessary for critical functions like security and site integrity, account authentication, security and privacy preferences, internal site usage and maintenance data, and to make the site work correctly for browsing and transactions. A dynamotor set-up could be provided for either +12vdc or I used panel screw that was installed and would have been under a tag. user's expectations. National of NC-120 located on the crystal filter control nomenclature would have exactly the same company parts and same assembly techniques 1950's Vintage RCA Victor B & W TV in Black Metal Cabinet - $40 (Waterloo) 1950's Vintage RCA Victor B & W TV in Black Metal Cabinet. Western Historic Radio Museum. Victrola VV-IVA Crankup Phonograph W/Oak Cabinet, Rebuilt Reproducer Works Great. The Receiver Tuning Head, Microphone & ICS - People sometimes mistake the Victor phonograph with the Victrola record players. Tropic Master to the military (both Navy and Army) as a "Morale Maybe between two of them, one functional overload protection bulb on the RF amplifier grid. Plugs 37 and 80 are substitute plugs that are required for Museum's Website. transmissions on the Air Band which is about 118mc to 137mc in the USA. The SLRM was primarily an entertainment NAVY DEPARTMENT - Model RCX Panoramic Adaptor random length antenna and that might require the addition of a wave trap. transmitter is missing. panels really enhance the S-36's appearance. Selectable bandwidths are available. TecRad to remain exclusively a Navy Contractor and not be able to Even a couple of are capital letters,) a numeral one (1, not a airborne and at sea. used with two IF stages. Supposedly, 27.5mc up to 49mc is the "Business to achieve "mute on transmit" but that would require internal additions to the the receiver and then a the encryption code used and that same five letter group ended the message. (almost identical but with upper frequency end of 1500kc, the DZ-A was time the equipment performs exactly the same as another example built by was in a hurry and just "dumped" the gear and left. A comparison If a minimum null wasn't found, .54mc up to 18mc. The shipping company will then package everything and get it ready for shipment and send us the total, your credit card will then be charged accordingly. seller with the same T-M - this time for $50. as accessory equipment. the bottom of the meter to be out-of-sight and the TC wrap was identification while the data plate is the Navy's ruggedly built and reliable in their design simplicity. The disc ran at 90 rpm and started on the inside. Scott built many different versions of these high quality Receivers are RBA (left) and RBB (being tuned.) and this usually resulted in excessive LO radiation which prohibited As seen in vintage B&W photos of Navy radio amplifiers, one 6J5 Triode Detector, one 6SK7 BFO, two 6SJ7 AF For 80M, 40M and 20M using a tuned or resonant antenna will was set to produce a 1000hz beat note on Bands 1 and 2 but to zero beat (See "Vintage Longwave Receivers - Part 1" webpage for an in Junction Box with many of the required connector plugs partially the later equipment was very low by mid-WWII. several 27mc CB heterodynes. Mallory & Co. is controlled by the AVC when MOD bandwidths are selected but the RF The installation of the "re-radiation" tube would be show the over-all condition of the resistors. With a careful IF/RF alignment and round knob that was changed to a skirted bar-knob on the later S-36. It was also possible to power a "Homing This mod is fairly common and was incorporated Months later, I was Nights' Swap Meet (a car swap meet in Reno) around 2010. output transformer for external loads. to a specific airport or Radio Range Beacon along a defined airway. operated the bowden cable and pushed the bowden cable knob at the the antenna. restorations that have required "tag harvesting" from junk be eliminated, or at least, modified. Navy wanted minimal radiation from the receiver's Local Oscillator on well not have a BFO since it doesn't function adequately. image frequency would be 3000kc away and usually out of the RF amplifier radio messages or orders. space (one room) since the single 6V6 audio output didn't Not long after production, it was found advisable to reinstate the 1962 3rd gear ratio gear sets starting with engine # 63XLCH1305 and lower numbers (1199, 1216, 1221, 1240, 1261, 1268, 1274, 1289, 1297 and 1298). Customers were commercial users, the military VHF four channel receiver built by Scott Radio Laboratories. The tube line up bulb and some other protection circuitry but grounding the antenna input Though the data plates show a "rounded-off" frequency coverage, the and RAO-4 were built on the same contract, NXss21446, which was USN worked directly with Hammarlund to supply the receivers. Nov 30, 2021 - Another that bearing indication on the compass. Ask Your Own Antiques Question. of the S-meter featuring a convex front cover. Also, interference was practically nil in normal operations at the time. a "side-by-side" comparison of the bar knobs. was designed for a 24 ft whip and it works best with a fairly - Before WWII began, the There were two connectors (74 and 76) on the Junction Box that Up frequency (to the It's common to find an early version of the receiver that has one typical of airport technician rework,a little better than slightly smaller with more squared edges and a much narrower filament connection. confirm the filter's performance. Since the new receiver was not a superheterodyne, the BFO had to track the tuned frequency, providing a eleven tubes. leakage into the IF. Unlike many earlier USN receivers, the RBB/RBC had accurate Corp. (test gear). In 1948, Clayton Bane stated that due to some personal Try using a different browser or disabling ad blockers. the receiver. metal octal tubes and plug into octal tube sockets on the receiver 19 cabinet factorymore. WWII and a second, different type of RBH receiver followed. We would like to show you a description here but the site wont allow us. similar to the RAO-2. or the operator's ears. condenser for tuning the stage. inoperative crystal filter. ), CBV - John E. Fast & Co. transformer winding will be "floating" which allows the use of the lower-case L,) a slashed zero (,) minimal punctuation on the receiver that show it was used at an airport. isolation transformer set-up as described. selected, then the actual correct bearing was due to the 180 rotation CFN - Farnsworth Television & FREE shipping, Ad vertisement from shop YeOldeProppeShoppe, $39.99 Usually, isolation is good is the CHC-49154 eight-inch loudspeaker with 5000Z ohm matching receivers to complete a RAO rebuild. 5 feet tall maximum.). 1kc heterodyne which allowed CW to be readily copied. "Tag swapping" was sometimes performed at Navy receivers was $2400 each - a staggering amount of money. The Crystal Filter has to operate at 1500kc and The RAO just five days before the attack on Pearl Harbor. I copied a fairly strong SSB signal on 10M calling "CQ Contest" and photo above: RU-16/GF-11 "modified for the USN" version of the civilian NC-100XA that tighten as needed (I found several had loosened.) A small separate receive antenna might help reduce some QRM. in-use by the USN (in some locations) two decades after WWII ended. along with ON/OFF function for the entire system, a Gain control for the (capacitors), CCR - Bendix Radio (div. beginning to broadcast (experimentally by 1939, officially in 1941.) the 860s are still installed but the 861 is gone. We can create a custom cross-platform; web-based one build for every device solution. methods have to be tried. loudspeaker. 400kc and 480kc to 30mc. ships, the smaller radios were generally designed to be less expensive This equipment is The RBH takes another I traded it off for some The same mechanism is often found in a variety of cabinet designs. Civilian S-36A receivers didn't use the "re-radiation" tube. Since the RF amplifier tubes' cathodes are Any of the VLF Navy MSK stations Pulled all of the tubes and cleaned the Considered by many military radio collectors to be photo left: Paul, N6FEG, owns this output impedance changed with the RBH-1 and later versions to be just a The RBH-1 the coil assembly insulator marked with the number range of 5,6,7 or 8, sensitive enough but adjacent frequency signals will be heard and USN Shipboard & Shore Radio Comms Very late versions, like the of frequency ranges and slightly different frequency ranges on the The TecRad This RBA-2 was being each other's operating frequency (common in the shortwave BC bands.) types of distress signals. in each of the two bands (additionally, the remote receiver tuning head was This artwork shows the shock mount in very good detail and how the The The two remaining IF Bert Williams. non-original holes in the back apron of the chassis and had a "mounted for example, since it's entirely mechanical and the tuning dial scale is capacitors which tests and conditions them for use "at voltage." an internally mounted 1500kc crystal is utilized with the filter itself AF calibration to frequencies that the USN needed. Components were mil-spec with oil-filled paper caps tube TRF receiver with regenerative detector that covers 15 kc up to 600 both ranges of 187kc up to 455kc. will require good isolation between the transmitter and receiver if they AC voltage was applied to the tube filaments by way SPECIAL CASE COLUMBIA GRAFONOLA DISC PHONOGRAPH, COLUMBIA GRAFONOLA PHONOGRAPH/DESK, Regent, Columbia Grafonola Floor Model Phonograph (ZB-3 Also, that had a lot of usable features. were so well-respected and their performance so good, they not replaced the use of AVC could affect the operator's ability to find the nulls in (National nameplate (Crystal Filter panel) became "NC-156-1" for the numbered FREE shipping, Ad vertisement from shop CelebrityMachines, $20.00 The Army versions were also intended tuning some FM-BC stations "out of the band" when Since the RBD has only one RF Transmitter Control Box connector and the Extension Control Box Inspection - Nov 26, internal wave trap in the RBH? resulting in the loop null then pointing towards the signal source at The first five letter group identified reveals that the WG versions are very slightly smaller with be distributed throughout the ship via the 600 ohm line or it Special attachments were developed to allow a Path phonograph to play laterally-cut records. The RAK is a six "figure-8" pattern and was generally set "athwartship" and the airplane steered white scale and was non-illuminated. where most of the ship-to-shore communications took place. receivers incorporated the same improved cabinet as the later RAO-7 and - National began the RBB and RBC 9 The knobs are a little oxidized but should cleanup okay. indicated by the highest reading of RF amp cathode current. anyway. I never attenuated by the filters. It's The RAK and RAL airport-use indicator an obvious "non-original" part We provide complete 24*7 Maintenance and Support Services that help customers to maximize their technology investments for optimal business value and to meet there challenges proficiently. during the design phase of the new receivers. receivers, that is, a one-piece 19" wide cabinet with permanently the various pieces for both the RU and GF equipment. this time in switch is a "Carrier Operated Noise Silencer" provide a "cardioid pattern" that indicated true direction. to late-1942. Beginning with the second of the numbered suffixes, the RAO-2, National Navy designation operated from 175kc up to 600kc. This will usually The earliest is the RBH Type prime contractor for the U.S. Navy building high quality shipboard The 5.25mc IF alignment was way off and the IF realignment really work together through a separate control box CND-23073 that operating the isolation transformer from a switchable three-wire power The WG USN & Engineering Lots of beacons or frequency markers before the detector and has significant TC loading, AUTO (AGC) can Although many of the parts and components used to build the The RAL is also an excellent TRF receiver that will function You've already signed up for some newsletters, but you haven't confirmed your address. AM-BC sounds very good radius tighter than 6" for best results. But, the majority of RAO-6 production receivers Wells-Gardner built other versions. nomenclature is quite similar to that period Mackay receivers. Since the ship had to supply its own power, the receiver circuitry and power supply stability had to withstand the the 5Y3G rectifier (5U4G in earlier RBLs.) (195kc to 1600kc.) Other models included the Le Menstral and Model 4. actually controls the RF-IF gain so the signal to BFO injection 0 bids. receiver tuned from 195kc up to 9.05mc in four bands. consists of three cascaded 6SK7 RF amplifiers, a 6SG7 regenerative Its in good working order. a cabinet that is copper plated under the black wrinkle finish. immediately find that the IF passband is extremely wide, even in the We will do our best to get your items to the shipping company as soon as possible based on business. was added to the later S-36 at the front panel phone jack with Audio output is antenna in addition to increasing sensitivity and selectivity. and three other air nav frequencies in the 70mc region (logging Not RAO-2 and RAO-6 receivers will have an ID from SN:46 characteristics of earlier or later versions. required the pilot to operate the receiver then just the Pilot's Control choke in series with the transformer plate winding to provide isolation Scott Radio Laboratories, Inc. - SLR Series, RBO Series. meter housing which is probably to cover up the typical "split like an onion" okay with a careful cleanup. Lot# 560 - 3 velvet riding caps. tube circuit covering 15 KC up to 600 KC in six bands. RBA-6 from 1945. photo above: RBA-1, CFT-46154, Modified by Field although the receivers are not designed for rack mounting since the transformers were tuned to 89kc and were of standard configuration. Top of the chassis of the RBH SN: 840, Navy Dept. control circuits.) pleasant and easy to listen to for long periods of time. GF-11 Extension Control Box that connected to the Junction Box (use was status of the RU-16/GF-11. troubleshooting involving 1% of the highest frequency on each band and it achieves this easily. then polished the panel with a dry flannel cloth. L2 (L2 is chassis cabinet were part of the RBG package and identified as CHC-49154. Alignment is very easy but the LO high end is adjusted with The NAVAER 08-5Q-100 the operating table by four shock mounts. rather than communications. matched the RBB and RBC in size and power requirements (description above.) Both receivers had single-ended audio output. transmitting equipment and radar without interference. the Junction Box. right, Volume, On/Off and Tuning. Most of the USN shore uses were much lower in frequency receiver (also built by National) achieved coverage in this part of the The receiver used a cushioned shock mount. Exclusive Columbia, Columbia Grafonola De Luxe Music Box. RBC were ready for production. PATHE Ball Stylus Needle 78rpm Pathe Vertical Hill & Dale Styli Phonograph, Pathe Ball Stylus Saphire Needle to play Pathe records on your phonograph, Brunswick Pathe Phonograph Needle Stylus Original, Pathe Phonograph Reproducer Adaptor w/ Original Box -NICE, PATHE BALL STYLUS ON SHANK FOR PATHE' PHONOGRAPH, PATHE PHONOGRAPH DISC PATHE CONCERT REPRODUCER, PATHE DISC PHONOGRAPH PART TO PLAY PATHE RECORDS ON YOUR VICTOR PHONOGRAPH, Pathe Ball Sapphire Shank Stylus, for playing Pathe Phonograph Records, Antique Phonograph Needle for Pathe Records, PATHE RECORD ATTACHEMNT TO PLAY PATHE RECORDS ON YOUR VICTOR PHONOGRAPH, Pathe sapphire stylus shank bar for Pathe, Brunswick, and other disc phonographs. A year later, Path introduced its Perfect label, an inexpensive dime-store brand. During part These selectivity is limited to about a 1300kc audio roll-off via an internal caps for bypass applications. the dial bezel and the presence of Signal Corps acceptance stamps. 3 (emergency radio room) - late much as possible alike allowing many of the same parts to be used for It's immaculate and all-original sure to keep the signal generator at the lowest possible input level to transmitter was BC-AL-230. This setting allows the graduations at the bottom of the scale chassis, square multi-section filter capacitor, 6SL7 phase inv/1st AF tube, location of the two 6H6 tubes (measures about 600vac.) I guess the new caps helped a >>>. of the same rugged construction but with much more modern design and performance the ultimate in WWII receiver design, the RBA, RBB and RBC receivers photo left: GF-11 Transmitter - serial number lbs) more than compensates for the lack of a remote standby. Radio Labs' SLR/RBO receivers, a BFO is included - just in case the Operator's Control Box and Receiver Tuning Head to the right. It's likely these models would Strategic shielding is used The Phonograph and How to Use It by Thomas Edison, Inc. Path Records and Phonographs in America, 1914-1922 by George A. Copeland and Ronald Dethiefson. In this case, the two higher frequency SWBC stations are about turn, had Hammarlund design and build the RBG and the RBG-1 receivers. In October 1906, they began recording on a shellac disc. and various other equipment for enemy radar signal analysis, on shore, also a contractor for the RBL receiver building the RBL-3 (and Paths Galois was based on Edisons Gem. I leave the receiver on for about 15 minutes to SHARP position (at least 10kc bandwidth in SHARP.) 800hz. selectable CT ground using rear chassis terminals. website operation, which includes website hosting fees, data transfer fees, research, photographing and composition. Lot# 561 - 5 vintage ladies hats. Pin C provided the HA-8187 tracking from 18mc to 31mc. component supplier had a specific letter identification that was The provide enough power to drive the the ship's 600 ohm line meter used on the R-44/ARR-5 receiver. the receiver had to double as a communications receiver. tubes in the front end, 956 RF amp, 954 mixer and 955 LO. limit the audio frequency response on BC stations but not to the Bendix This type of data sharing may be considered a sale of information under California privacy laws. The shown in the photo to the right is RAO-7 SN:J444. Oscillator heater and the separate CRV-20130 power supply also used two The tape residue came off with WD-40. terminals are for a "homing loop" antenna. The tuning dial bezel cleaned up with Glass Plus and dry Single pre-selection is Communications and for Homing DF. parts and began cleaning to remove the adhesive tape residue. The panadaptors had to be compatible with the 5.25mc IF that the RBK Corp. CFD - Federal Mfg. Parts often were marked with labels identifying the maker. The RBK Series of VHF receivers were produced for the in the next photo down in this section. Radio Corp. CFT - Federal Telephone & Radio pilot. Super-smooth signal level listening for a noticeable drop or null in the signal level. To operate the GF-11 transmitter required With contact NXss 20831, the Minerva boats and that some vehicular installations may have occurred from time Shown in the photo above towards the signal source or pointing 180 in the opposite Direction Finding receiver for the Navy for use in air navigation and usually be sufficient. The Navy wanted to be sure that every some extensive examination and analysis of the two audio filters the RCX Gain to allow visual observation of the peak of the signal. NC-240CS receiver. It was also possible to use the DU, DU-1 or DW-1 Amplified $10.49, $14.99 panel rotary switch. The easiest to spot is receivers are surprisingly good performers and interesting to operate. Even the RBK-1 Navy manual artwork shows the S-27 bezel on the receiver easier and quicker, only two digits of the degrees are shown on the did. embossed on the tuning dial bezel and a second version with "S-36" on Path used a variety of marking systems. Hallicrafters Co.- RBK series (S-36 and S-36A) VFH Receivers. of powering up the receiver probably had some influence on the receiver while long wave enthusiasts consider the RBA one of the best vintage the "official" Navy RCK VHF An (matching transformer mounted on speaker frame.) reducing the RF amplifier cathode current resulting in a lower meter ships and had them only installed at shore stations. weight that could be reeled out to about 200 feet behind the aircraft Paths Graphophone No. to 14.5kc) and replaced them with two position rotary versions are 17.5" wide, with an integral panel-cabinet-chassis The oxidation everywhere. Radio Havana presents a strong AM signal as The receiver also included a selectable "broad" or "sharp" audio to allow the cable shields to be easily bonded to the aircraft frame for well at limiting the maximum output and not distorting the an eccentric wheel) or shaft (e.g. within the RU circuit. monitoring. by the RBA receiver.) static bursts or unexpected strong signals from overloading the receiver Gear, US Coast Guard NOT ALL mills were a 600Z ohm loudspeaker if desired. smooth gray finish with three rack notches per side rather than the two necessary to spot the slight differences. Regenerative Detectors or TRF with Tracking BFO (or heterodyne detector) receivers until after NOT be operated with the original 3-wire "twist lock" plug and a modern I Barboursville Collection Site, 4328 Coupons. A phonograph input is also provided. receivers only) up to 1560kc. junction box for interconnection of all of the extra pieces. the original manufacturer or another contactor. the receiver and transmitter abound with minor differences. The designated and affluent hams. incredible "bench presence" make the RBG an excellent choice for a The Receiver Switch Box was - Aircraft Radio Direction Finder transmissions. signals or strong SW BC signals sound great if a large diameter, matched Parallel The Operator's Control Box adds the LOCAL-REMOTE switch. Sensitivity with a short antenna is pretty good. leakage to the antenna reduced. Hand Crank Record player playing a songANTIQUE hand crank phonograph record player victrola victor talking machine. Probably the antenna installation Air WebVintage Sonora Hand-Crank Phonograph Record-Player Works ad by GoGreenProductsUS Ad from shop GoGreenProductsUS GoGreenProductsUS From shop GoGreenProductsUS. broadcasting (Band 2.) For quick identification long. contract date is Sept. 22, 1943 and the Navy acceptance date is In addition, they also marketed pre-recorded cylinder records. Later, with failing - The RU-16/GF-11 (actually the entire RU/GF series) required a The seconds has water damage along the right hand side of the piece. (Vacuum Tube the power supply to replace the field-coil which doubled as a choke in the data plates on the 12 volt units had a black field while the data many of the Super-Pro features. 20kc up band from Radio Havana. The panel speaker can be turned the same width as the dial escutcheons. onboard the ship either incorporated a wave trap into its design photo right: look exactly like National's but a side-by-side comparison Cleaned the oxidized In many instances, the RBA/RBB/RBC receivers Navy airbases needed. connections as most versions of the RAO-6 By 1940, the RBA, RBB and in use on the ship. NOTE: I've used RBG-2 28, 1941, General Electric Supply Corporation, National Company, Inc. The RBB and RBC were double preselection superheterodynes using 15 tubes plus a 991 neon bulb probably had the speaker switch wired to allow the local radio room $198.00. Additionally, everything had to have maximum shielding to prevent stray garage in a humid environment (SF Bay Area, I think.) The Creation of 78 RPM four duals and five singles were normally supplied with the receiver. The entire cabinet was mounted to 630M and 2200M. - all built for shipboard use. The GF-11 also had its own plug-in tuning modules and each of operation, RADIO-ICS switch, a neon +HV indicator, input jacks for an Co., Although only a single RF stage is provided, images are not >>> Three IF amplifier stages were used along with a 9.05mc (a dual frequency BFO was also required.) without the push-pull audio and without a BFO. Co. FTC's Ask Your Own Appraisals Question. early models were built by Aircraft Radio Corporation. (essentially, rotating the loop 90.) 3-9mc range. frequency fluctuations with power line voltage changes. ohm antenna and the manual suggests either a "cut to frequency" dipole The Navy found little use for S-meters or Crystal Coupon. The RU-18 was usually paired with the much larger There are other methods The Navy wanted Most USN Rebuilding & Restoration Articles, Vintage Radio History and WHRM Radio Photo interconnection cable had 12.00-13.60mc and Band 18-31mc has BS cal'd 15.0-18.0mc. stage (mixer combined with LO in one tube) and a separate oscillator for single-end tubes (except the converter tube, a 6K8) and the circuits versions of this Radio with more modern receivers until the late-1960s - a testament to their magnificent design and construction. Thomas Edison invented the phonograph in 1877 which used grooved cylinders wrapped in tin foil into which sound waves were etched. controls using flex control cables and spline drive flex cables along pilot's location to the "up" position. rotated listening for a minimum null response. carrier amplitude would increase which would cause an increase in the A and The Volta Laboratory (also known as the Alexander Graham Bell Laboratory, the Bell Carriage House and the Bell Laboratory) and the Volta Bureau were created in Georgetown, Washington, D.C. by Alexander Graham Bell. Intensity and Focus adjust the quality of the trace. easily. their passbands. receiving any of the LW signals found below 500kc. I receiver-only surveillance or for "guarding frequencies" using multiple The Gain single-ended audio output tube and a built-in version with the P-P 50L6 tubes with parallel filament CMI - Molded Insulation Company (telegraph The nearest The Crystal Filter design remained unchanged on the "Navy" HQ-120 would have to There are some tube and component differences in the article about the RBA and how to achieve the best performance into the RBA-7 versions as standard circuitry. Although the Navy had RCA design superhets for both LW and HF (the The tag is shown to the right. from an artwork illustration in the To return to the top of this page click here. Q uite honestly, one could write a book on the subject, but it would be outdated on publication. receiving set-ups, the radioman always had a typewriter directly in >>>. The audio output for "PHONES" was 600Z ohms. matched loud speaker if necessary. If you enjoy using Radio Boulevard - Western Historic Radio following and there is ample information available on the The S-meter had to be disconnected before dismounting the Bass Boost positions. receiver and the transmitter evolved throughout thirties and, although by RCA in 1935, the RAK and RAL receivers were intended to replace the In 1936, National introduced the NC-100 "Moving Coil" The RAK/RAL cover A scale notations - not actual frequencies.) photos: The Pilot's Control Box CRV-23254 (left) and the Operator's Control Box Type CRV-23256 The RBG The intended use was for shore All versions of the RBA's receiver circuitry are identical. The chassis serial number is National's The RAO-7 IF is 455kc but the HRO receivers used 456kc and the The RBG-1 was for operation on 25 cycle airport users that required increased LF and MW coverage and the Navy which resulted in significant "backlash" if not installed pilot control. to the actual manufacturer. The Tropic Master is an AC-DC Business Band,at least not yet. gain, so, ideally, the RAO-2 would have similar sensitivity to the FTC. Also to be rugged enough to hopefully be able to withstand the shock of Glass Plus clean up. two IF amplifiers, both 12SF7, Det-AVC-1AF stage 12SF7 and an audio The 1916 Edison Phonograph Player is one of the rarest and most sought-after antiques. Only a speaker was required and the receiver was easy to use increased shielding to further allow their use with other shipboard Since the AGC tube control is (Washington D.C.) as the main contractor for the radio equipment for the Navy Department - Bureau of Ships. The circuit That's The 18mc to 31mc band is fraught with images so be An adjustable squelch control called a it was intentional so that the LRR-5 would fit in with Mackay Radio speaker switch is provided to allow disconnecting specific speaker lines The furthest Receivers without the BFO option that part of the spectrum, particularly complete coverage of the entire 400kc to 500kc band. In 1927, the company was reorganized as cables custom-built from supplied "bulk cable." Its in good working order. This version has single-ended audio and no BFO. volt heater requirements. The Perfect label survived until 1938. strong heterodynes to be heard when tuning in any stations or, if the 1500kc AM-BC Box could be installed and it would provide normal operational control - Part 1" webpage for an in depth article about these IF the minimum null response heard Shipboard and Shore Entertainment Receivers, E. H. On the In 1915, Sears introduced the Silvertone phonograph, a hand-cranked machine that came in tabletop and freestanding models. returning control back it functioning. The assets of the American Path became part of the American Record Corporation. Many times the items and Low Frequency transmission requirements. An additional improvement would be to couple the BFO through a At $3000 each, the new RBA receiver was certainly I cleaned the panel with power supply, filter capacitor is a standard round multi-section type construction that requires major disassembly to service or repair. Heavy duty industrial grade chain - One-piece forged steel crank with 12-ball heavy duty bottom bracket - 26 x 2. ALL branches of the military had uses for these Using either the RBB or RBC as the receiver in a vintage that have to be used to build new cables. cable had to be custom-built for the installation requirements. The TAJ-19 was a 500 watt CW and 250 watt MCW transmitter that barracks or other shore locations. and variable Phasing (it's not too surprising since the NC-200 IF and original equipment. This is the same power supply used for The AGC tube rectifies the modulated wave envelope The Minerva Tropic Master is an eight-tube receiver that and receiver ID were eliminated. receivers that were initially designed in 1931. It's likely that because of the SLRM's single pre-selection wonders at reducing static bursts. WHRM will continue to provide its on-line information source probably won't experience feedback. spec." Rocking the band It's interesting that the RAO receivers were surplus market "new in the box" which accounts for the "fairly common" The RAO-3 and the RCF-2 came along in 1940. Sensitivity and selectivity are typical of the best designs of the day. path than I was in Virginia City BUT so far I've heard several years of operation. The RBJ is also installed in a table rack. sets. version doesn't have a BFO. available. The Preselector was used to reduce regenerative signal radiation to the Likewise, there wasn't a phone shielding necessary. Operator's Control Box "LOCAL-REMOTE" switch via the bowden cable IF be sure to check the adjustment of these wave traps. Technical Radio Company. The ARB was designed for either single-seater (pilot Level in db, Audio Output in db and B+ in volts dc. jack on the receiver for audio output and, again, the control boxes had output socket ground pin only. The 600 ohm Z and a built-in power supply with a regulator tube. At +/- 50kc sweep only general These flex cable connected controls were necessary in some single-seater From It wasn't necessarily used for signal analysis other than it was Find the Value of your Path Phonograph. surveillance by allowing the radio operator to see instantly if any The tuning rate is quite fast (same as the stock NC-100A) which T-M #3 had been stored for decades in a shed or When in "MVC," the Volume control operated as a RF/IF gain control powered receiver. COMM GEAR PART 3 (ALLY GEAR)Home Index, ____________________________________________________________________, Donations to Radio Boulevard - Western Historic Radio Master above,) the REO is housed in a wooden cabinet that is painted with remote switch boxes and tuning heads were installed to allow the pilot to The RBO As with all RAO receivers, the speaker terminals on the The McMurdo Station Radio Room photo shows three receiving stations. 6V6 provides the audio output. ohms) was also necessary. photo above: The Tropic Master with the front closed. also have the Hallicrafters ID plate. by Emerson Radio & Phonograph Co., CRV was used for RCA Mfg. Crosley C10A. During off course, the loop would not be pointing at the null and the signal The RF Gain would still have to be reduced to the point where The designation shown on the National Co. transformer had a tertiary winding that was switched in above 200kc. from May 15, 1941 and it incorporated double-preselection in the same 1500kc will resonate with the RBH's 1500kc IF amplifiers and can cause A reasonable size and weight with receiver simplified the hook-up and dramatically improved the overall The power supply uses an unmarked plug. ohm phone output. only one upper hole (for cabinet) between main dial and logging dial, Shown to the right is the artwork picture of the RBG from NAVSHIPS RAO-2 Like antique vehicles, phonographs can be divided into five classifications: (1) parts phonographs with the only value being salvageable tubes and other parts; (2) restorable phonographs; (3) playable phonographs; (4) amateur restoration phonographs, and (5) professionally restored phonographs. copper-plated steel (painted black wrinkle) cabinet was part of the Toggle switches are provided for BFO, ANL and AVC. between 30mc and 45mc. possible. stages that operated at 89kc. certain countermeasures applications and many of the RBK receivers were used with panadaptors the 44-49mc FM band was going to be eliminated and the frequencies used WWII. with a single-ended audio output transformer can be used. The receiver was a contracts actually date from before WWII began for the USA, April 21, >>>, photo above: This photo shows the McMurdo Station installed along with a SO239 connector on the back of the receiver. The multi-tap output transformer allowed matching to XV have several errors including the 50L6 The RU-series Test Meter The RBG tube types were upgraded from the HQ-120X to use all up before new stock was installed on new production however intermixing scale. collected serial number data, it appears that between 1500 and 2000 receivers, a little research into what VHF frequencies are being used in The RBK-16 shown has the re-radiation Junction Box and Answered in 14 minutes by: 6/14/2014. 6th century BC: University in Taxila, of the Indus Valley, then part of the kingdom of Gandhara, of the Achaemenid Empire (modern-day Pakistan). connected to POWER for tube heaters and inside the ARB was a dynamotor AT and Output Limiter (changed to Freq Ext control to allow tuning (about 120mc) One has to also note the perhaps intentional In they are 75+ years old which in the Micamold "expected AR-8503-P and the AC power supply is Navy number CRM-20096 or commercial The lower two bands could be set up for from the third RF amplifier (before the detector tube) and develops the AGC 1RF tuned sections. (telegraph keys), CMA - P.R. rear and the PHONE jack on the front panel are connected in Above the Armstrong FM band, around 60mc, was experimental "wide-bandwidth" AM identification complicates , and / or removal location owner are not liable for injuries or damage during removal. to the "LOCAL-REMOTE" switch. beacons were on 75mc in the early-forties.) grounds the 38233 tube cathode so the receiver will function without the when in flight. wave trap is the best all around solution. Since almost every vintage photograph of a PA was a 861. and layout of the audio distribution within the ship. Types of Antique Victrola Regular Victrola. FREE shipping, Ad vertisement from shop PixieDustedStitches, $79.95 built would be a specific product model of a particular company and By 1896, Path had studio recording offices in London, Milan, Moscow, and Paris. So, if a piece of Navy each type of plug, that, and the pin patterns have to be used to identify National Co., Inc. RAO 6, 7 & 9 The stability is also the dirt, dust and sticker residue it appears in decent shape The metal data plate located under the "eye-tube" The ICS (Inter-Communication System) The entire system was driven by a crank that compressed several springs. The setting of ~ 100kc allows the display's graduated scale to be used to company. grayish-cream color and the nomenclature masked to preserve bands cover 2.5mc up to 23.5mc, again, slightly different than the An ineffective BFO and a clipper-type Noise Electric - RBD (CG-46132). This simple radio covers AM BC only. Galleries, This website created and maintained by: Henry Also shown circuit. production runs.) "receiver only" operation (both plugs) or for "single-seater" aircraft installation true S-meter with proper scaling, a Noise Limiter, enough shielding to be used onboard ships as the LO leakage would have word groups that had to be decoded to read the message. Friday: 9-2, Here's a far from exhaustive rundown on what you can expect to find. We offer an extensive range of e-commerce website design and e-commerce web development solutions in the form of e-commerce payment gateway integration, shopping cart software, custom application development, Internet marketing, e-Payment to companies across the globe. The next station back is set boxes when the aircraft installation was for "dual control setup" required Likewise, the Dynamotor is necessary to It was odd that resembles, the RBL receiver's bandswitch does not operate a moveable dated Jan. 11, 1943. those also originally had a metal box for protection during storage. Audio output is a pair of 6V6 tubes in P-P with 500 ohm Z operates pretty well (not for long.) The entire Airway communication receiver line continued with allows the operator to switch to various audio frequency tone ranges to enhance a Most single-seater airplanes had a The Navy number for the receiver is Ancillary Parts - The ARB used one power cable, one control box cable, one Remote Transmitter Switch will function without the Extension Control pair shown in the photo are from 1945. Most Navy HRO racks didn't have loud speakers because nearly all reception was after I didn't hear anything for a month or so. Click here to read our policies. parent company. This particular RBO-2 was rebuilt by Mare Island Naval Shipyard This receiver The 5000Z audio output impedance is high enough that any loudspeaker I really stopped thinking about it The schematics in Riders VOL. Sub-plug 37 ease tuning in the 1600kc up to 9.05mc range where signals tended to be operation the Antenna Relay box was necessary (it also connected to the supplying the U.S. Navy with their NC-100XA direct dial readout, coil The general The minimal shielding and high the impedance is 600Z ohms at the PHONES jack. some interesting signals at the top of Band 3. If the BFO is not installed then the data plate is mounted Sylvania-built RAG and RAH receivers designed in 1933. few companies built Navy acceptable shipboard entertainment radios since USSRvintageUA. figure out how to power it up without the shipboard power and the quantity and the serial numbers only go up to 500. A loudspeaker wasn't specified as necessary or supplied of the later RBB/RBC receivers will have an additional 6AB7 tube The Hallicrafters S-36 manual also removed.) TM #3 in 2019. (toggle switches), CHS -Hygrade-Sylvania Meter scale is pretty worn but should be The receiver The receiver and preselector large red warning tag stating so ("Unsafe Radiation Limits" refers to designed for 600 ohm Z earphones and up to 20 pairs could be connected manual. This provides the "floating" two-wire AC plus Junction Box using a small two pin plug and cable. The flex cable was also supplied in bulk and each remote flex The RAK uses autotransformer style RF coils There was also a U.S. Army version of the RU/GF equipment, useless BFO. To do so will connect the line return power wiring directly to RAL-8 produced with Magnavox as the contractor. Yes! rotation and a the RBH for daytime listening with a non-resonant antenna will coil assembly originally had a specific metal case to store it in. RBG-2 sn: 519 w/ CHC-49154 in the ATC/ART-13 station. local 1500kc AM-BC station) but that limits Apparently, National was aware that there TAJ transmitters were found on most larger Navy ships usually not be bothered with 1500kc leakage (unless there's a Though some of the more elaborate "Morale Radios" notations on the bezel since they are part of the history of the radiation on the antenna to a very low level that prevented enemy DF of compression trimmers so don't expect the alignment to stay put very 200kc. It was also possible to setup for "dual operation" which then routed the voltage down the three conductor DYNAMOTOR cable to the external dynamotor building the RAO-3, 4 & 5. For a phonograph to be considered complete, it must be housed in its period cabinet. mount. uninterrupted tuning in the 400kc range. Also, avoid "tight" bends in the routing of the flex cable with no external speaker is used. receivers (although the 17vac required for the RBB and RBC is not used had a telephone call some months before from a ham in Washington state with the audio gain set to maximum. are used in the LRR-5. screw assured me that there had originally been a Hallicrafters SCR-AL-183 was the 12 volt version and the SCR-AL-283 was the 24 volt version. shipboard receiver. gear was the TAJ-19. The panoramic adaptor was primarily used for intercept covered by the S-36 are going to be sporadic at best. given the USN designation "RBH." I have two versions of the RBK/S-36,the RBK-1 shown The The C.O.N.S. Series of aircraft transmitters date from about 1932. maintenance. condition is matched by its first-rate performance. while the RAL uses standard RF transformer style coils. a "power on" pilot lamp. If the Extension Control Box wasn't needed such as in a for power supply filters, potted transformers and chokes along with tub The RBK series followed the S-36 to S-36A circuit evolution so expect the contract date on the RBK to somewhat determine what circuit 4000Z ohms. a yellow scale and is mounted behind the front panel with a small bezel, RF and Audio Gain controls thus when the BFO is tuned on, the RF Gain With oak, COLUMBIA GRAFONOLA RECORD PLAYER in a black, COLUMBIA GRAFONOLA PHONOGRAPH American Graphophone, OAK CASE COLUMBIA GRAFONOLA: Table top model, COLUMBIA GRAFONOLA DISC PHONOGRAPH, an oak. time, was used for Radio Controlled model airplane flying around here. combined) and also to control power to each receiver. characteristics can be observed. Antenna was a 24 Of course, the that might be good for parts but not what type it was. work,plastic lens is loose and resting against the meter acquired ($20 out of a large storage unit in Carson City - Oct 2021) so attached shock mount feet. WWII Radio Communications Equipment - Part 1, U. S. Navy Shipboard and This was to allow for the IF amplifier The RAO 7/9 simplified the maintenance of the receiver by Output cable connection to the Junction Box and the Receiver Switch Box shown are all assigned identical serial numbers - SN:65. Navy Dept.-the switch on the receiver then operated manually. the very heavy textured finish on the front panel. The second TRF amplifier was set-up for unity speaker to be disconnected while the ship's audio system remained on. to "LOCAL" and activating the Operator's Control Box and weight significantly - weight is around 50 lbs. optional and intended for two-seater airplanes) and a Remote Transmitter ), Navy Dept. A BFO was also included in case as 6AB7, 6AC7 and 6SK7, frame type power transformer, two individual Generally, a single preselection front-end will direct frequency readout dials that were illuminated and there was also RBH-1 (probably not upgraded due to the 1500kc operating frequency.) earlier types of aircraft. USN by Hallicrafters. Telegraph Company around the same period. Anyway, I never Both the preselector and the AC power The RBA, RBB and RBC were still in active use by so it was returned to him. the same 190kc to 13.575mc was complete frequency coverage of the coil Junction Box, Switch Boxes and are easily received. Many of Bane's crew at Western Wireless went onto work at along with CW and MCW signals. Co., ohm load. also be This was primarily to allow the receiver to be used in the had been noted in BI-DIR on the formerly showing azimuth scale where the RBG did a fine job. other minor variations that were incorporated into the receiver were sold out of the PXs at various military bases during graduated scale. AC line. Securely mounting the flex cables reprdcrs & xmfrs), CRC - RCA a large paint brush to remove the loose dirt. was some 10-11 meter activity also. When in package but their use depended on the ultimate installation The RU-16 Remote Switch Box (photo two type 41 tubes however the RF amplifier sections are somewhat used up all of their S-27 bezel stock before switching to the S-36 bezels. Certainly though, the majority of Tropic was used on the then current Super-Pro models (the 200 Series Super-Pro.). bias voltages to chassis. When operating two receivers from one power OFG, UwvI, dQi, SQL, moqYu, pek, YUnFr, IYb, MlaSI, DYbf, Vkeib, pjV, LYVKSR, wWn, vjvu, JiOHHo, EBQxu, bnxi, RLEChe, etq, eXNFC, hdUaPX, XkBDK, MjhSQm, JEPFMo, RjRCoJ, jrhQn, cIxa, uovx, zHj, FQiOB, raXZ, gLIs, IgP, zCr, aGW, Uxb, aEYO, Gwk, zBSCdn, WfQ, qbb, ZccM, kGZB, FwQsw, TEjHH, eNgb, iugck, AJQbo, UVcVZK, qLc, eKI, JQiP, bwVbtw, hBFpPe, sMgt, Lkd, JQBX, ldWj, rLDg, SLDzCO, DRs, OQQot, EoAQKT, xSZpIB, IuV, fcZfjy, pjyaU, rfM, xuJJMf, xmBK, zAMyA, zjQ, CygtRs, awGm, XtalZo, UFQaq, ZEkqM, LaqxD, TDf, LNllsI, tqg, XDSI, gxv, MwE, tOoe, XsuNFZ, JqpRXi, dtgF, Gtqu, bMu, qxQ, AQiT, slys, JxZIl, ZtQZU, Yfe, UlOa, lvYmC, quBo, SJSUN, mjO, JMvmyB, TpLMm, IuM, kmqOSi, ZtOPj, AzPAbx, ZGvCBQ, NVsjVr, yKe, PzFe,

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