Our Museum Items

The Racal RA-17 is Triple Conversion Super-heterodyne general coverage communications receiver. Using 23 Tubes it is built on a heavy duty cast aluminium chassis. Frequency range 980kHz to 30MHz. 145 feet long Film Scale frequency read out, AM/CW, Selectivity 8,3,1.2,0.75,0.3, 0.1 kHz -6dB. Has 2 parallel 100kHz IF outputs, AF outputs, 600 Ohms Headphone Socket, Signal/AF meter, RF Gain control, 100 kHz calibrator, BFO 8 kHz, built in 2.5 Speaker. Operates from 100-125 / 200-250 VAC, 45-65 Hz, 85W. Physical size 520*305*556mm, 29 kg.

The MA-934 battery is used with the Racal TRA-931 Syncal 30 and some other Racal radios. 24 Volts output. The battery is made up of standard D type rechargeable battery cells. The MA-934 battery is supplied in used condition and the cells would probably be dead. The battery case can easily be taken apart for cell replacement.

The Racal MA-1723 HF drive unit is the companion to the RA-1792 receiver. frequency range 1 to 29.9999 MHz. LSB, USB, ISB, Key, AM, CW, RTTY. The MA-1723 is supplied basically tested.

Part Number 5965-99-901-2377. Head Set and Throat Microphone with Clansman 7 Pin Audio Plug. Lead has a Push to Talk Switch. Intended for use with British PRC-349 and other similar radios with Clansman 7 pin Audio Plug.

Head Set and Microphone, has Clansman 7 pin Audio Plug. Modern version of above. Works with most Racal Clansman radio equipment with Clansman 7 pin Audio Plug.

Clansman Hand Set , has Clansman 6 pin Audio Plug. Used with British 931 Syncal 30, A-14, and other similar radio sets with Clansman 6 pin Audio Plug.

The RA-400 Speaker/Microphone is made from impact resistant black plastic. The unit is water resistant with a Push to Talk Switch and Antenna socket. The Lead has Antenna plug and 7 Pin Clansman Audio Plug. The unit is designed to provide reliable two-way communications with a wide range of PMR, handheld radios and communication systems, including the Cougar secure radio system, and Clansman Radio Equipment that has a 7 pin Audio Connector. The microphone's design is optimised for hand-held operation and for minimum inconvenience to the user's clothing when in stand-by mode. The RA400 is supplied with an earphone socket, Ear Piece not Supplied enabling discrete reception of incoming signals. The case includes a spring steel clothing clip.

The R-392/URR is the perfect HF Ham Radio receiver for everyday use. It is built to high US military specification to withstand battlefield conditions. A very sensitive HF receiver for the amateur radio enthusiasts who likes to operate the proper old fashioned way. It tunes SSB very easily and sounds great on AM!

R-392 Basic Specifications
Frequency Range: 0.5-32 MHz
Operating Voltage: 24-28 VDC
Size: (W*H*D): 283*293*365 mm
Modes of Operation: AM/CW
Current Drain: 3 Amps Max
Bandwidth: 2, 4 and 8 KHz
Impedance: 50 Ohms

The R-392/URR is the little brother of the famous Collins R-390 receiver, it is designed by Collins and built under licence by a number of manufactures including Collins Radio Company, Philco Corporation, Western Electric and Stewart Warner.The R-392/URR is essentially a R-390 that is re-packaged in a water resistant case. It is ruggerised and is made more compact than the standard R-390 for use in military vehicles and field command posts.It operates from 24-28 Volt DC @ 3 Amps. The radio is very silent in operation as it does not use any vibrators, dynamotors or other noisy voltage converters. The R-392/URR Receiver provides continuous tuning and covers 0.5-32 MHz in 32 bands. AM, CW (Voice or Tone) and SSB using BFO for product detection, Three Bandwidth settings 2, 4 and 8 KHz. Calibration points is provided every 100 kHz throughout its range. The radio can be used as a stand alone receiver or as part of a two-way radio set with a T-195 Transmitter. This configuration was called the GRC-19.

Front Panel Controls:
Function Switch (Off, Stand-By, Normal, Limiter, Net and Squelch), Mechanical Digital Tuning Dial, Carrier Level Meter, Megahertz Control, Kilohertz Control, RF Gain-Squelch Threshold Control, AF Gain Control, Antenna Trimmer Control, BFO Control, BFO Pitch Control, AGC Switch, Dial Zero Control, Dial Lock Control, Bandwidth Switch, Dial Dimmer Switch.

Front Panel Connectors:
One IF and two Audio Connectors, one BNC Antenna Connector and one push-on Antenna Connector, Power Connector (Power Pins A & D +24VDC, Pin E is Ground).

The R-392 HF Receiver is supplied tested and working with a LS-166 Loud-Speaker and a reproduction Operators Manual.

The R-234 is a high frequency HF

Radio set AN/PRC-9, frequency range 27.0 to 38.9 MHz, Super-Heterodyne FM Receiver / Transmitter. Man-Pack or Vehicular fixed station operation.1 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-9 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-8 >>>> 20.0 to 27.9 MHz
AN/PRC-9 >>>> 27.0 to 38.9 MHz
AN/PRC-10 >>>> 38.0 to 54.9 MHz

These PRC-9's are supplied in good complete untested condition Grade 3 with a Battery Box which may be slightly corroded. No other accessories is supplied with the radio set. The H-33/PT Handset, antenna rod may be available separately.

The AN/PRC-68 was first introduced in the 1970's and was used by the U.S. Marine Corps. The radio is a small lightweight hand held device working in the VHF frequency band of 30-79.95 Mhz. Frequency Synthesizer operation with ten preset channels that can be programmed using internal selector switches. The design was so successful that it lead to the development of other radios in the series such as PRC-PRC-126, PRC-128 and PRC-136. The PRC-68 is probably the first military radio to use a Synthesizer Chip and is completely solid state and has built in battery saving features. Using discrete components and a modular construction the radio is easy to serviced.

The radio has a built in speaker / Microphone, Volume control and Squelch facility. External audio connector is also provided to allow operation with a H-138, H-139 and H-250 Handsets. The radio can be used with a short or long antenna and operates from a 15 Volt battery not available.

The PRC-68 radio is supplied in good working condition Grade 2 and includes the carry pouch and short antenna.

Specifications:
Frequency Range: 30.000 MHz - 79.95 MHz
Available Channels: 1000 possible Channels, 50 Khz steps
Minimum Channel Spacing: 50 kHz
Preset Channels: 10 Channels
Modulation: Frequency Modulation (FM)
Power Output: 1 Watt
Frequency Control: Built-in Synthesizer
Frequency Stability: 0.005 percent
Sensitivity: 0.5 microvolts for 10 dB SINAD
Squelch: Carrier operated, also sends out 150Hz tone
Operating Temperature: -40 C to +65 C
Weight with Battery: 1.3 kg
Size: 212 x 96 x 38.6 mm
Approximate Range: 2 Km with long antenna, 500 meters with short antenna

Empty crystal storage box for the German PRC-6/6.

Power Supply for the British PRC-316 radio. It powers the radio from 12VDC. NATO Part Number 5820-99-106-2476.

For RT-66, RT-67, RT-68 transceivers provide all the voltages from 24 VDC @6.5 Amp input.

The PTR1751 is lightweight UHF military airborne transceiver designed to provide air-to-air and air-to-ground communications under severe electrical and environmental conditions. Used by RAF, British Army and Royal Navy, it is suitable for use in all types of helicopter and fixed-wind aircraft, and is intended primarily for air traffic control, but this role can be extended with optional extras to include homing and continuous AM reception on the international distress frequency of 243 MHz. The PTR1751 operates over the 225 to 399.975 MHz frequency range and provides 7000 channels at 25 kHz intervals throughout the range. The channel spacing is 50 kHz with 25 kHz spacing available as an option. The power output is 10 or 20 W minimum, under all conditions of operation. Part Number: 630/1/37851/119, Nato Number: 5821-99-778-7570. Weight 8Kg.

Made by PYE Dynamics Limited, in England the Personal Locator Beacon type ARI23237/1 was mainly used by military pilots.

A personal locator beacon is a device that when activated automatically transmits a signal on a internationally monitored frequency. This emergency frequency is constantly monitored and should a beacon be heard, help is sent out to locate and rescue the person in trouble. That said the authorities would be extremely annoyed if the unit is activated by unauthorised people and for no good reason.

The PYE ARI23237/1 provides distress beacon and two way voice communications facilities on the 243 & 282.80 MHz military distress bands.

A rotary switch on top of the unit selects power on/off, Distress & Auxiliary Channels. The Auxiliary channel is on 282.80 MHz and is Speech only. The distress channel is on 243 MHZ and is the automatic Beacon or Speech. A volume control and a push button self test facility are also provided. The unit is powered by a 12 Volt battery not available and has a transmitting range of 3Km.

The unit is supplied in good looking condition with-out any accessories. The pull cords, battery, antenna or a manual are not available. Dimensions: 80mm x 90mm x 35mm, Weight: 0.5 Kg. NSN: 5821-99-630-9247.

The Russian P-407M is a single channel full duplex 2 or 4 wire radio-relay station using tubes. Frequency range 52-60MHz, channel spacing 50kHz. Modulation FM R/T. Output Power 1 Watt. AF bandwidth 0.3-3.4 kHz. Ringing tone 30-50Hz. Powered by two 2.4V rechargeable batteries.

Russian P-323 is a self-contained triple conversion VHF communications receiver using miniature tubes. Manufactured in the late 50's, it was used either as a manpack or fitted in to vehicles for intercept and monitoring purposes. AM, CW and FM. Frequency range 20-100 MHz in four bands. Continuously tuneable within the band it has a unique mechanical projection tuning scale were the frequency read-out is projected optically on to a glass screen. The receiver is powered by two 1.2V rechargeable batteries fitted in a compartment at the back or by external AC Power Supply for 110-220 VAC operation.

Frequency range 20-51.5 Mhz, 25 Khz channel spacing, 25 Watts output. Can be continually tuned over the entire frequency range, or one of four pre-set frequencies. The set is capable of transmitting over a range of 16 to 55 Km (10 to 35 miles) depending on the type of antenna. Requires 26VDC to operate.

Morse Key, type YA S414. Plastic version of the KEY, WT-8 AMP enclosed in a metal housing for use with a field radio.

B-62B is a general purpose LF-HF communications receiver built for the Admiralty by Murphy radio Co. It looks and functions in a similar manor to a B-40 described above. It is capable of receiving CW, AM and FSK. Works on 115 or 240 VAC. Uses 15 valve, single conversion super-heterodyne, Frequency range - 150-300KHz, 0.56-1.5MHz, 3.9-10MHz, 9.5-18.5MHz, 17.6-30.5MHz. Sensitivity - 2uV CW or 4uV RT for 20dB signal to noise. Weight - 100lb!!, Dimensions - 12.75w x 15.75h x 18.75d

The B-40 is a general purpose HF communications receiver which were used in the late 50's by the Royal Navy and the Royal Australian Navy. Made in the United Kingdom by Murphy Radio Company. It had to be strong and reliable, sensitive and easy to use. It was literally built like a battleship, and had to stay on frequency, when the ship fired it's guns! Consequently weight was not a factor in it's design.

Ground plane antenna when used with combinations of AB-21, AB-24, MS-116, MS-118. Whip masts installed as three radiating elements and one vertical. Has 3 diameter ceramic feed-through insulator with UHF connection. A clamp allows installation on top of 1.6 diameter masts.

Manufactured by Marconi Secure Radio in Portsmouth, England.
The MH1 Headset with Helmet are designed for use with the Clansman vehicle radio sets such as VRC-321, VRC-322 & VRC-353 and in Vehicle control harness. It will also work with Clansman man-pack radios. The MH1 weighs approximately 650 grams and is designed to be worn with virtually all types of headgear. The helmet is easily detachable from headset. The earpieces are linked with head, neck and chin straps, all of which are adjustable to optimise fit and comfort for the wearer. The standard MH1 comprises a headset fitted with a cable connector assembly for attachment to a pressel switch assembly and an omni-position boom micro-phone. The microphone is of the pressure gradient (noise-cancelling) type. Each earpiece features an adjustable shutter device designed specifically to attenuate environmental noise. Supplied as brand new Grade 1.

TECHNICAL SPECIFICATION HEADSET
Earphone Type: Rocking Armature, fully tropicalised.
Earphone Sensitivity: 120 dB relative to 20 uPa for 1 mW at 1 kHz (each earphone).
Earphone Impedance: 300 ohm + 25% at 1 kHz (each earphone).
Microphone Type: Miniature Dynamic, noise-cancelling, fully tropicalised.
Microphone Sensitivity: -69 dB relative to 1 V/Pa open circuit at 1 kHz.
Microphone Impedance: 300 ohm + 20% at 1 kHz.
Operating Temperature Range: -30 to + 70 'C.
Relative humidity: 95% at + 35 'C.
Plug and cables: supplied with 800 mm cable terminated in 7 Pin Clansman plug.
Weight: 650 grams.