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Welcome to the radio section. Please be sure to check this section on a regular basis as new products are frequently.

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Out of stock more wanted please contact me

This peace is large and heavy overseas buyers please contact me for a shipping quote

Gee set Type 62A (page 4 radio)

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Here we have a Wartime MK II Gee set in good original condition and as far as I can tell complete , please look at the pictures and enlarge them.

A/M 10Q/37

GEE was a navigation system for aircraft that was evolved by British scientists to meet the needs of the Royal Air Force during World War II, at a time when both Bomber and Coastal Commands faced serious navigational problems.

The system subsequently remained in service until 1970.

Seen in situ in a Lancaster bomber

Accurate navigation by day and night under conditions of radio and radar silence in indifferent weather, by unlimited numbers of aircraft flying under conditions where tactical considerations prevented straight and level flying, called for a position fixing aid which could be operated quickly and simply.
GEE became operational about the time that the thousand bomber raids commenced in 1942, and when the battle of the Bay of Biscay was reaching its maximum.
It was the first serious attempt to provide the navigator with a rapid means of determination of position, and seldom has any one invention so faithfully and quickly satisfied the requirements for which it was developed.

The principle of operation was the measurement of the time difference between the reception of pulses from ground transmitters (working in pairs), measured on a cathode ray tube display in the aircraft. Two or more Slave ground stations, working with a common Master station, constituted a complete Gee Chain.

The time difference between signals from two pairs of stations were measured simultaneously.

When the readings were referred to pre computed lines on a special chart, the two simultaneous position lines obtained combined to give a position fix for the navigator.

To secure a position line, an aircraft had to be within range of two transmitters, and to secure a position fix, within range of three stations, ie., a common Master and two Slaves.

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RAF Ground position indicator MK I (pg 4 radio )

This is a ground position indicator MK I in nice original condition as fitted to many of the RAF's heavy Bombers including the Lancaster.

This does what it says on the box it is an instrument that determines and displays automatically the DR (dead reckoning) position of an aircraft. It gets its data from an ASI (air speed indicator) and a compass.

Click Here to see this in the Instruments Section

Click Here to see this in the Instruments Section

Lancaster Air Position Indicator (pg1 instruments)

Here we have an Air Position Indicator as used by the Navigators of Lancaster Bombers

Mk 1.B Reference 6B/458

The Air Position Indicator (API), is an electromechanical device that combined the
input from the Air Mileage unit, which gave the true airspeed, and the heading being flown from the
Distant Reading Compass (DRC � a gyro-magnetic compass that also had a manually input correction for magnetic variation) to displayed the air position (i.e. the position of the aircraft assuming no wind),
displayed as a latitude and longitude, based on a starting position set at the beginning of the flight

Seen in Situ Below

�195

Radar display tube (pg 4 radio )

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Here is a spare display tube for the Gee set appears to be in good condition

Radar/Radio power unit (pg 4 radio )

Here we have a power unit. This has the AM Ref: 10 KB/1449

10KB shows this to be a radio/radar power unit transformer.

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�175

R/T control unit Type 289 (pg4 radio)

This box rattles so the contents are damaged for display only.

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�55

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Type 192 plug-board (page 4 radio)

Type 192 plug-board which interfaces with the A1134 interphone amplifier

Out of stock more wanted contact me

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Note damage to the plunger on the picture below

Bathtub Morse key switch (pg4 Rad)

Used in Lancasters and practically every RAF wartime Bomber for communicating using Morse.

This one has a peace missing at the base of the plunger but works as it should.

10F/507 on main body

10A/7790 on plunger

10F/7741 on main body

�55

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Bathtub Morse key switch 2 (pg4 Rad)

Used in Lancasters and practically every RAF wartime Bomber for communicating using Morse.

This one is complete and in good original condition, the plunger but works as it should.

10F/507 on main body 10A/7790 on plunger 10F/7741 on main body

Click on the picture's to enlarge

�175

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Bathtub Morse key switch 3 (pg4 Rad)

Used in Lancasters and practically every RAF wartime Bomber for communicating using Morse.

This one is complete and in good original condition, the plunger but works as it should.

10F/507 on main body 10A/7790 on plunger 10F/7741 on main body

Click on the picture's to enlarge

�175

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Bathtub Morse key switch 4 (pg4 Rad)

Used in Lancasters and practically every RAF wartime Bomber for communicating using Morse.

This one is complete and in good original condition, the plunger but works as it should. This one is mounted on a bakelite base.

10F/507 on main body 10A/7790 on plunger 10F/7741 on main body

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�175

Glass areal insulator (pg4 Rad)

Pictured here are two glass insulators used in wartime aircraft to insulate aerials. They are stored like this and the price is for each individual glass.

�55 each