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Vintage Radio Gallery

AN/GRC-9Y AN/PRC 8 AN/ARC 5 AN/GRC 3 BC 1306 BC 312M 
CPRC 26  FSE38/58 MR 506 PP 327   PRC6/6 (RT196) PRC 90B
PRC 515-RU 20 PRC 638 P 126  R 1262 RF 10 RT 633
RT 1-T4 RUP 2/2K RV3 (ER95I) SEM 25 SEM 35 SEM 52A
SEM 52S Somm. FL/FT 101 TR PP-11 UFT 422 UFT 435 UK PRC 320
UK PRC 349 UK PRC 352 Ulta El. 3A4 Yaesu FT7B

 

 

 

AN/GRC-9Y (USA, French, ITA)

The AN/GRC-9 (called the "Angry Nine") was a 2-12 MHz, AM/CW, low power transportable radio set which can be vehicular mounted (as the AN/VRC-34).  It is basically a improved version of the WW II BC-1306 radio and was fielded in the late 1940s and used through the Korean War and later in the 1950s.  The complete AN/GRC-9 is a set of components for operation on Continuous Wave (CW), modulated CW (MCW) or AM.  In addition to the electronic components, the complete system includes canvas bags, whip antenna mast with counterpoise 1/2 wave sloping wire (and erecting kit), straps, a T-17 microphone, J-45 telegraph key for CW operation, HS-30 head- set and LS-7 speaker.  The AN/GRC-9 replaced the SCR-284, SCR-288 and SCR-694 radios and was in turn replaced by the AN/PRC-62 and AN/PRC-74I was one on most known radio of the  War-Era and has been used by US and NATO forces (Belgium, France, Germany, Greece, Italy, The Netherlands and Portugal).

Technical manual  TM 11-263, TM 11-5820-453-10                   learn more

 

 

 

AN/GRC 3: R 109, RT 68, RT70, AM65, PP112 on MT 297   

(USA, Esp, French)          look here parts details

The VRC-5/18 Tactical Vehicle Radio station is a RTX which operates in the frequency range of 27-39 Mhz FM in continuous tuning or presets. They were mounted in Jeeps "M-38A1" and other. Was used by US Army and some NATO countries.
  It has 2 or 15 Watt Output, uses 27 tubes, operates from 24VDC PP-112, Power supply.

Tecnical Manual TM-11-284

 

 

 

 

 

  BC 1306 (USA, French, ITA)

This is the original W.W.II radio station that was mounted in American Jeeps or carried as a back-pack into battle by American GI's. The Radio Stations are dated 1944 and use the famous BC-1306 Radio Transmitter and Receiver. These radios were shipped from USA as part of US Lend Lease program in the war against Nazi Germany. The SCR-694 can operate with the wartime BC-611 walkie-talkie's and the post-war GRC-9 radio sets, as well as many other HF radios. Take a view of military Trainig Film.  

Tecnical Manual TM-11-230C             

 

 

 

Power Supply PP 327 (USA)

 

 

 

UFT-422 (GER)

Is  a solid state 4 channel DDR radio for public services, manufactured by RFT.  It was mainly used by firefighters, VOPO and other services from 150 to 174 Mhz.
A cable antenna built in the shoulder strap was used when the distances to cover were short; or when the provided steel band antenna was hindering.  
A headset with throat microfone also is part of the radio set;  usually the funnel- looking microfone / Loudspeaker combination is used.

                                                                               

 

AN/ARC 5 ARC5 LF MF & HF (parts), Aircraft Radio 

QU 11/C ,C 962S, C 4083/APX, SB 327, AN 3106

Model AN/ARC-5 Aircraft Radio Equipment is a complete multi-channel radio transmitting and receiving set providing communication and navigation facilities for aircraft. The LF-MF-HF components are designed to transmit and receive voice, tone-modulated, and continuous wave (cw) signals.  Primary power (14 or 28 volts dc) is furnished by the aircraft’s electrical system. This power is distributed through a junction box or mounting rack, and is controlled by the off-on switches located on the control units.  Individual dynamotors furnish high voltage to the radio receiver circuits. High voltage for the transmitter circuits is supplied by a dynamotor mounted on the modulator unit. For voice or cw operation, the radio receivers are tuned either locally or remotely through mechanical linkage connected to the control. Lock-tuned operation of the radio receivers is available for voice reception only. The transmitters are pre-tuned with their frequency controlled by a master oscillator. The type of emission and the transmitter required are selected by individual switches mounted on the transmitter control unit. AN/ARC-5 is designed for use with a single-wire antenna of the trailing or fixed type, a vertical mast antenna, or a loop antenna.

P 126 or R 126 (URRS)

The R-126 set was still in this role until the early 1980s.  It has been replaced by the R-392, was first manufactured in 1962 is a ruggedly constructed, light weight battery operated radio designed for short range communication between squads and platoons.  It has a power output of 0.5 watts and a transmission range of 2 to 4 Km.  The  frequency range of 48.5 to 51.0 MHz and comes in two versions, crystal controlled and continuous tune. The crystal controlled version has three pre set frequencies.  It is painted khaki coloured enamel and is powered by two 1.5 VDC silver zinc batteries.  With batteries, the set weighs 2.8 kg (6 lb.).  Another use of the radio is to provide an off vehicle radio command and control to the operators of SAGGER and SNAPPER missile systems.  This set operates in the same frequency range as the AN/PRC 25, AN/PRC 77 and the AN/VRC 12 and can be netted with these radios.                                      

AN/PRC 8- 9- 10 (USA, Esp, French)  

Radio set AN/PRC-10, frequency range 38.0 to 54.9 MHz, Super-Heterodyne FM Receiver / Transmitter is a Man-Pack or Vehicular fixed station operation, one Watt transmitter Output. Uses 16 miniature wire ended tubes. Power requirements 1.5V, 6V, 67.5V, 135V powered by BA-279 battery.
The AN/PRC-10 is part of a family of radios AN/PRC-8, AN/PRC-9, and AN/PRC-10 which were used as a squad radio by US Army in Korea and Vietnam Wars and by many NATO countries. Made in USA in 1950's and 60's, each radio had a different frequency range.

AN/PRC-9, range 27.0 to 38.9 MHz, AN/PRC-10, range 20.0 to 27.9 MHz, 

Tecnical Manual TM-11-4065

 

 

SEM 35 (GER)

Is a fully transistorized backpack, in the German BW it replaced the former radios PRC-8, 9,10.
The former PRC-x - radios together had a frequency range of 20 to 55 MHz; the SEM-35 has 26 to 70 MHz; this not yet the frequency range for the Tactical band today: 30 to 76 MHz.
Main disadvantages for the SEM 35, compared to the PRC-77 are said to be: the heavy weight, and the power consumption could be less. The usage of everyday A- batteries (SEM 35) , compared to special batteries (PRC-77), however, compensates part of this drawback
.

Tecnical Manual TDv 6625/005-15, 5820-061-13                             

SEM 25 (GER) with some accessories

The transmitter/receiver set SEM25 has a range of approximately 30km. It operates in the 26 to 70MHz frequency band and provides 880 channels at 550kHz spacing. Any ten preset channels can be selected by means of a switch.  The transmitter output is switchable to 1 or 15 watts. Transmitter and receiver use FM, the operation mode is simplex.  The set is designed for installation in motor vehicles and is powered from the 24-volt radio or vehicle battery. In conjunction with another SEM25 or SEM35 set it can be used for relay operation.
Used also including interphone communication, local to remote control and internal-external communication from tanks.  The possibility of locating the control unit as much as 10 metres from the rtx allows the radio set to be mounted at any convenient place in the vehicle.  Developed in the early 1960s under a Federal German Government and entered service in 1964 with the Federal German army. Still in production but scheduled for replacement by SEM80/90.

Tecnical Manual 5820-046-13, 5820-046-40, 5820-045-12


                               

Elmer ER 95/I or RV3 (Fra, ITA)

Is a modern solid-state Italian radio used from 26 to 37095 Mhz;.
It was delveloped in France under the mane of TR-PP-13B.
Using many modules makes it very servicable. It can be used as portable, mobile or fixed radio station.
The mobile power supply is attached to the transceiver and also powers up the amplifier. The amplifier can be set elsewhere, using a long supplying cable.

 

 

SEM 52A (GER)

Built by Standard Elektrik in Stuttgart Germany (SEL), the SEM-52A is a design of early 70's technology, and it is a very tough and simple radio of high quality construction. Configured much the same way as the BCC-349 for carry, operation and physical layout, but is much smaller and lighter. As with most equipment of German origin, the quality of this radio is excellent.  The SEM-52A is a crystal control, six channel radio that can be set up for operation on any six frequencies between 47 and 57MHz.  The RF power output is rated at 300mw from a 6-9.9VDC power supply. Several different battery types are known to have been available for this radio, but the most common is that which utilised discreet "AA" cells. It uses a vinyl covered tape antenna that is similar in length and construction to US variations, BNC compatible. 

Tecnical Manual TDv-5820/107-13, -40,-50

 

SEM 52S (GER)

 

It is a 1990's portable radio, successor of the SEM-52 A in the German BW, built-in micro.

The battery description shows AA calls ore a special Lithium block, the battery compartment is similar to SEM52A. 
Frequency range from  46.0 to 57.975 MHz, FM, 6 programmable channel, 25 KhzChannel spacing,
1W output FM.

Voltage is 6.8- 12 V. , consumption: receiving 70 mA, transmitting 400 mA. 

 

                                                                                  



TR PP-11 (FRA, PORT, ITA)

Is a French handy portable, also licensensed in adjacent countries as Italy and Portugal, used in 1960 years; frequency from 47 to 57 Mhz in 6 setup chrystals. The TR-PP-11 is basically the shape of an overgrown telephone handset, more square lined and thinner than the PRC-6.

One of the sets was crystalled for 47.000, 49.000, 49.400, 50.200, 51.000 and 51.800 MHz. The second had only 5 crystals fitted. These were for 48.000, 48.200, 49.000, 49.400 and 51.200 MHz.

The crystals are type CR-31/U, series resonant and, as stated above, crystal frequency is signal frequency less 11.500 MHz.   The TR-PP-11 has a claimed set-to set range 3 to 8 km (5 miles maximum) subject to the terrain, bettery 12/15V.

 

RT 196 or PRC6/6 (USA, GER, FRA, Esp, ITA, Port)

RTX mod RT-196/PRC6-6- (W. Germany 1961) is a portable radio set known like "Banana", derived from the old model AN/PRC-6, it was used in Vietnam conflict and later, adopted also by any NATO forces, and replaced the BC-611.  The PRC-6/6 is a portable VHF radio with a operational Frequency of 47-55.4 MHz, FM, 250 mw output, 6 channels, and uses miniature tubes, crystal controlled; requires 1.5, 45, and 90VDC to operate.  Supplied complete in good working order with Canvas Strap, steel ribbon (tape) antenna 60 cm long crystals, it can be used with or without telephone handset.  Tubes employed 15: (9) DF61, (3) 1AD4, (1) 5672, (1) 5678, (1) 6397 special; all tubes are subminiature type. Power source: battery type BA-270/U (+1,5, +4,5, +45, +90 V). Weight is 3,5 Kg ca.

Tecnical Manual TM 11-296                                      


Clansman UK-PRC 352 (GB) 

352 is the Clansman PRC-351 Back-Pack Radio plus 20W specific amplifier. UK/PRC 351 is a 4 Watt portable VHF (FM) Radio,Frequency Range 30 to 76.000 MHz with 25Khz channel spacing (total of 1841 programmable), made by RACAL BCC Ltd. Clansman, Plessey in England.  The range with long antenna is 10 km and the PRC-351 has been designed to provide command communications at battalion and company level for dismounted troops and  was also used in vehicles by mounted troops. This radio replaced the older A41 and A42 British VHF radios.

Has 4 knobs switching the frequency.  The PRC-351 is powered by a 24V and the battery can be charged by a handcrank between RT and battery(as in this case PRC 352).  The radio is carried on the back or at the belt. Battery, short and long rod-antenna and hendset belong to the set.
Handset and headset can be connected simultaneously, so a second operator can listen in and can br remote controlled from a distance up to three km, and also can retransmit. Without HF output it can be used as telephone.

 

 

Ultra Electronic ltd 3A4 AC3 

VHF short distance communications 

(have you please more details ?)

CPRC 26 (CAN, FRA, ITA)

CPRC-26 Canadian version of SRA-40. Six channel crystal controlled, FM VHF Receiver/Transmitter, 47-55.4 Mhz, 38 possible channels. Power output 250mW, with an FM deviation of plus and minus 15khz. It has a range of about 1 mile (1.6km), is fully sealed and weighs about 10 pounds (5kg).  Power is provided by dry batteries and had a useful life of 20 hours,requires 1.5, 45, 90, -3VDC.   It was designed in Canada and used by many armed services, including the Canadian Army and Navy, the US Army, NATO, French Army and the Australian Army.  It was built by Phillips Tel., from 1959. Is complete with webbing, handset, and 2 antennas.  The circuit is very interesting, as it uses only one crystal per channel, used for both transmit and receive. The design is based on valve circuitry, at the time when pencil valves were taking over from miniature valves. The radio contains 11 pencil valves and 2 miniature valves. The receiver is a single conversion superheterodyne, using a crystal controlled oscillator. There is one RF (Radio Frequency) amplifier and the IF (Intermediate Frequency) is at 4.3 mhz, with 4 stages plus one Limiter. There is an FM discriminator and audio amplifier for driving headphones. The transmitter has a master oscillator directly driving the power output valve. The modulator is driven from the microphone and is  also  used to control the transmit frequency with an AFC (Automatic Frequency Control) circuit.     

Manual code 12206                                                                       

 

RUP 2/2K (YUG)

Family of VHF radio devices type RU-2 (RU-2/1, RU-2/2 and RU2/2K) was manufactured in factory "Rudi Čajavec" Banja Luka (ex Yugoslavia) by the end of the 70's. The device externally looks completely like a RUP-12, because it uses the same chass, set of tools and sources of power supply. The factory "Rudi Cajavec" constructed this device using the block scheme for RUP-12, but is applied modern technology, so we can freely say that this is a completely new solution.  Frequency range from 30 MHz to 69.95 MHz, 800 channels with the space between the channels of 50 KHz, it's set with three selectors.  The RU2/1 replaced the older RUP-12 ex-Yugoslav peoples army VHF radio The frequency is controlled by a direct frequency synthesizer. The transmitting power output is 1.4 W, FM mode,it provides the broadband transistor amplifier and it's a real shame that the constructor hadn't found a way to raise the power output to 5-6 W, because the shell and the circuit feed easily allow it.  Powered by standard Yugoslav People's Army 12 V 7 Ah NiCd battery pack type 10KA-6, producted by "Krusik" Valjevo factory , or external 12 VDC sources. Radio set RU-2 has been designed to provide command link at battalion and company level, all the same became the universal VHF radio set in the Yugoslav Army. Served as a portable device, or was built into HF radio stations, it was also used in vehicles and by mounted troops. 

Technical scheme - brochure

 

RT 1-T4 + ND 11 Power Supply (YUG) 

 

Is a modern (1973) Yogoslavian UHF- portable with 4 channels. It uses UHF, other than the Western radios in this frequency band.

Radios named RT  were built by the Slovenian company ISKRA and used by TO, a territorial defence force like the US "National Guard".

Frequency range: 34-36.5 Mhz, Output circa 1 Watt USB mode, request 12V Battery voltage

 

 

  

TeKaDe FSE-38/58 (GER) 

+ mounitng or portable set 

 
I
s a VHF FM Portable Transceiver with a frequency range of 38-58 MHz (1970 years ca). Output Power 10 and 50 mW, powered by a 6 Volt Rechargeable Battery or a external 24 Volt Supply.  Plug-in Crystal Frequency Selection.  FSE-38/58 is modular constructed on a die-cast aluminium chassis.  The water proof outer case is made from impact resistant plastic, with a aluminium front panel.  It can cooperate with: RT-68, RT-70, R-110, PRC-10, and SEM series.
The micro hanset is the classic NATO H33/PT, and sometimes was used with helmet antenna (see the pic).  The radio can easy be modified for 650 mW Output.
There are no new squelch provisions available.  
The mode/power switch on the left is divided into two halves, the left side is for EB or battery, the right side is for external 24 volts. There are no provisions for night illumination of the controls.
Transmitter and Receiver frequency is set by plugging in the appropriate crystal. The Crystals are divided into 3 Colour Groups - Red, Green and Blue. Generally any Crystal in the same Colour Group can be inserted without re-tuning the radio.

 

Clansman UK-PRC 320 (GB)          

PRC-320 is a lightweight HF/SSB radio station designed as part of the British Army's Clansman range of radio equipments for combat use throughout the world. It was used by long-range patrols and Special Forces because of its sky-wave range performance and hand generator system.

The equipment operates in the 2 to 30 MHz band,SSB (USB), AM, CW (wide) and CW (narrow),  with 100 Hz channel spacing, which gives a choice of 280 000 frequencies. Selection is by decade knobs which control a micro-miniature synthesizer locked to a temperature compensated reference oscillator, giving a high order of stability under all environmental conditions.  Speech processing and automatic level control are employed to provide whisper speech facilities and a high mean output power.

A transmitter output power of 30 W PEP working into a 2.4 m whip antenna gives the PRC-320 a ground-wave communications range in excess of 40 km by day under normal conditions; this range performance is due in part to the high grade receiver and high efficiency manual antenna tuning unit (ATU) which is integral with the transmitter/receiver unit.   More details ITA.

 

mORE DETAILS

RT 633 (ITA)

 

Ducati RT 633 was built in middle 70's for Carabinieri Italian Forces, working VHF, FM modulation, and it can be carried with a large black leather pouch.

Has 6 channels and frequency range: 47-55.45 Mhz RF with steel tape antenna 1m, Output power: 0.5 W 

Transmitting range: 1 km to 3 Km .   Green Plaque Infos here

 

 

PRC 638 (Iraq, ITA)

The PRC-638 is built in Italy by IRET, and is intended to perform a similar role as the US PRC-77. It can be combined with various equipment to provide backpack, vehicular, or semi-fixed station operation. Features digital synthesis, with four rotary knob selection of frequency. Modular construction for easy field service by replacement of sub-assemblies. And an automatic antenna tuner operates in the receive mode with either 1 or 3 Meter whips. Ops 30-76mc in 25kc steps for a possible 1840 channels. RF power output is a selectable 4 Watts high ( optional 2 Watts ), or 100mw Low. Requires 11VDC ( 100ma max rec. ), 1.5amps ( trans High ), 400ma ( trans Low ) as supplied by nicad batteries or vehicular accessories. 

 Known accessories include PAL-30 30 watt vehicular RF power amplifier ( VRQ-109 ), CU-14 vehicular antenna tuner, CV-3TA optional vehicular antenna tuner, 2.75 Meter vehicular antenna, PU-66 24VDC fixed station power supply, PU-64 12VDC fixed station power supply.

                                             

 

BC 312M + Loud Speaker 3



BC seire is a radio receiver AM/CW, Frequency Range: 1.5-18 MHz in 
 Continuous Tuning - 6 Bands manually selected.   

 It was designed for installation in various type vheicles for the purpose of providing communication either while stationary or moving and from 1943 was used also in fixed station, by the most part of U.S. Army, Navy, Airforce; power supply 160/220Volts, as this type. 

Manual TM 11-850

 

Clansman UK-PRC 349 (GB)  

Clansman UK/PRC (United Kingdom Personal Radio Communicator) 349 is a modern portable VHF/FM radio Frequency range is 37 to 46.95 MHz in 25 KHz spacing (in three different versions) giving a total of 400 useable frequencies. Power output is 250 mW, 500 mW or 1 W. Frequency is selected by 3 small thumb wheel knobs on the side of the radio which can be operated even while the operator is wearing Arctic mittens, or in the dark by counting clicks from the end-stops.   The 349 is supplied with a holster (allowing the radio to be carried on the back or chest), 0.5m whip antenna and also a headset, throat microphone and pressel assembly.     Built by Racal was added to the Clansman family in 1972, in 1979 a license was sold to Spain.  
The RT349 has built-in internal protection against open- and short-circuit antenna conditions and is protected against HF or VHF signals from collocated transmitters. An additional facility is available for transmitting a 1 kHz signal tone to alert a listening operator, providing simple signalling for use in silent ambush operations.

349 operates with 12 VDC using a ni-cad rechargeable battery or 10x AA batteries inserted inside a battery cassette. The radio can be mounted on the shoulder, chest or back with adjustable quick release holster. It can also be carried inside a back pack or pocket of a combat jacket;  the dimensions of the transceiver and the low profile antenna enable the set to remain inconspicuous for operations requiring seclusion by not significantly altering the user’s silhouette. 
Numerous 349 were used during "Operation Desert Storm". 

BECKER FLUGFUNKWERK MR 506 (GER)

It is a German solid state SAR Transceiver and beacon, built by "Becker Flugfunkwerk". It is part of the equipment of ships and planes (F4 & Tornado) to locate personell in distress from 1971 age.  At bailout a magnetic pin is pulled out automatically, a reed contact switches on the radio and the beacon. The beacon is switched on automatically, since the pin holds the switch for the beacon in the on position.
Operated as beacon, a tone oscillating between 300 and 1000 hertz is sent two times a second.  

Frequency:  training radio: 245.1 MHz training frequency, SAR: 243 MHz, A2/A3 modes.  Batterry: built-in Lithium, 16.8V, 1.6 Ah

 

 

 

 

R-1262 (HUNG)    

It is a 4 channel 30 - 80 MHz, VHF-FM, 4 channel spy radio; the set usually is with heardphones, two 9V clip batteries. The receiver is a double convertion design 10.7 & 455 Mhz intermediate frequency, the RF section is set automatically tunes to match the crystal selected.   Hungarian provenience is not sure but most propably.

 

 

 

 

 

 

PRC 90B (USA)     

The PRC-90 radio is a dual-channel, self-powered, personal, SAR radio that is primarily used for two-way voice or modulated continuous-wave (MCW) communications between a downed crewman and a rescue aircraft. It has a provision for transmitting tone and swept-frequency, homing-beacon signals to guide rescue efforts. It operates on two fixed frequencies and is compatible with all UHF AM radios and UHF direction-finder groups.

It is carried in the USAF emergency vest of air crew members, and can transmit a beacon (attention getting warble tone) on 243.0 MHz, voice on 243.0 or 282.2 MHz and Morse Code in Modulated Continuos Wave (MCW) mode on 243.0.  It will receive voice on 243.0 and 282.2 MHz.  The previous frequencies are for Military emergency communications.  
The newest generation of this radio is the AN/PRC-90-2. It combines the features of the AN/PRC-90-1 into a more useful design that closely resembles the original radio. The typical communication range is similar to the AN/PRC-90-1, but a high-power mode increases the voice range to 125 nautical miles at 10,000 feet. The -2 radio also is rated to operate in water 50 feet deep for five minutes or 2 feet deep for 24 hours.

Tecnical manual is TM 11-5820-1049-12

 


RF 10 (CZECH) 

It's a modern (1989) Czech light manpack. It can be carried with or without a pouch; on the chest, on the back or on the belt, it comes with all accessories in a big plastic bag . In it is a large styrofoam box, that contains: the radio with batterypack , two different length rod antennas, handset, small sheet metal box with accessories.


Frequency range from 44.000 to 53.975 MHz, 25kHz steps, 400 total channels.
The battery pack contains 5 NiCad- batteries, 1.2V / 4Ah, that also can be replaced by today's D- batteries.

RF Output power: 1 W 

Transmitting range: 5 km 0,5 m using antenna - 1 km 3,3 m draw antenna - 10 km 30 m directive antenna.  More infos

                                      

 

UFT 435 (GER)

Was developed and built in the GDR for the airforce. This "modern" radio uses transistors and integrated circuits and is very service friendly: the modules can be flipped out while in use, power circa 600 mW.

It is meant as a portable radio; but also can be used mobile with accesories. In a floating container it can be transported on or under the water surface; this version is called "UFT 435-T".

Usually the radio used rechargeable NiCad- batteries; as special accessories a power supply or a battery box for A- cells can be ordered, in this case fully with typical "icecream" micro, laryngophone and hearness and plaque balun for dipole antenna.

Frequency range: is 45,6 ... 47,075 MHz

 

 

SOMMERKAMP FL01-FR101

Yaesu Communications-Receiver FR-101.
Coverage 1.8 to 30 MHz in 21× 500 kHz ranges plus optional 6-m- and 2-m-HAM band; Modes: AM, CW, SSB, RTTY, FM (optional); xtal-filters; with digital readout available. Matches FL-101/FT-101.
In Europe Sommerkamp-Label, Yaesu in USA.         

 

 

YAESU FT7 B

Yaesu FT-7 is a rugged, HF solid state and modular built  amateurband radioTX, for fixed and for mobile operation. iT was built by the Yaesu Corporation in Japan in the late 1970s and early 1980s. This transceiver was very small for its time; by current modern standards however it is a large mobile set. Its power is adjustable up from 10 to about 20W. The set is built up with pre-dated synthesisers and microprocessors, has an excellent receiver and a perfect dynamic range with good close-in noise performance which makes tuning across the noisy 80 or 40m bands at night very easy. 

In 1979 was released the Yaesu FT-7B, fully extended 10m band coverage in four 500 kHz segments, and offers AM mode. Its transmitting output is adjustable from 5 until 50W by an integrated 50W power amplifier using two 2SC2099 final transistors. It is also equipped with a noise blanker and an RF attenuator. 

Some modifications are here and here

 

 


PRC 515 - RU 20 (YUG)
RU-20 is ex-Yugoslav Peoples Army HF/SSB radio station manufactured by RIZ Zagreb factory (ex Yugoslavia) under licence from Rockwell Collins of Canada (original Collins model designation is PRC-515) for combat use.

The equipment operates in the 2 to 30 MHz band with 100Hz spacing. Selection is by decade push down switches that control a synthesizer. Modes of operation SSB (LSB, USB), AM and CW, with automatic antenna tuner.  Three motors always tune the antenna without interference of the operator and without interrupting the transmission. Works into static ground or sky-wave antennas, dipole or end-fed antenna, sky-wave with possible communications at ranges from 50 to 2000 km circa.

The radio consists of three modules: Receiver / Exciter Control unit Power amplifier / coupler, for remote control the Control unit can be detached from the transceiver and be connected by a cable. 
Without changing the usual configuration it can be used as mobile or fixed station. Different antennas, a mounting for mobile use and the car battery can be attached.
Power amplifiers can provide a HF power of 100 or 400 Watts.

 

 

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