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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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RAF Signals Museum: There was a need for increased frequency stability for the TR9. Frequency drift resulted from vibration and temperature changes during flight. In April 1937, crystal control was applied to the TR9; that was then designated the TR9C. Later, to facilitate transmissions for Direction Finding (DF) purposes within a flight of aircraft while still allowing R/T contact to be maintained, a second frequency channel was provided on the TR9; that became the TR9D.

 The proposed VHF set was to be built such that it would be physically interchangeable with the TR9, so that the aircraft fit could be changed from VHF to HF, and vice versa, at short notice!

By the end of 1940, 41 fighter squadrons were completely re-equipped with VHF equipment. The AOC-in-C of Fighter Command gave instructions for the remaining squadrons in the Command to be 'changed over to VHF R/T' (sic) by 1 March 1941.

TR9D Radio set (pg 1 rad)

This is the ultimate in aviation history when it comes to radio.

I have recently found this superb TR9D in complete condition. I cannot be stressed to highly how very rare these sets are and in 15 years this is only the second set I have seen. The internals are present although I am unable to test this radio.

On aircraft containing a TR9 set the aerial would be strung between the aerial mast and the tail plane.

 The TR9 would have started its operational career  fitted to either  the Gloster Gladiator which entered service in 1937 the very last of the RAF Bi planes

 or in December 1937- No. 111 Squadron at Northolt takes delivery of the first Hawker Hurricane fighters these aircraft took part in the Battle of France.

 Note the aerial wire denoting that this aircraft has a TR9 fitted

 In 1938 the Spitfire entered service with No. 19 Sdr at Duxford who fought in the Battle of Britain.

 Note the aerial wire denoting that this aircraft has a TR9 fitted


The RAF was using TR9 sets in fighter aircraft including the Spitfire to provide an air-ground and air-air R/T communications. The TR9 was an AM (i.e. not FM) set.

There was an electro-mechanical controller in the cockpit to operate the set using Teleflex type cables.  

 The TR9 (HF) set fitted to aircraft during 1932 and 1933 gave increased range over that obtained previously - 35 miles air-to-ground and 5 miles air-to-air being obtained.

At the time in question, the sector commander or controller in the operations room did not attempt to speak to the pilot of an aircraft by radio telephone. Messages to pilots were written on slips of paper and passed to R/T operators for transmission. The R/T operators were specially chosen for their clear enunciation and they sat in sound-proofed enclosures.

In 1934, trials were carried out in which controllers spoke directly to pilots - when the trials proved successful, the practice was adopted in all sectors.

There is a reference to the need to make interceptions at ranges greater than the 35 -40 miles R/T range of the TR9. In January 1937 a requirement for a range of 100 miles with aircraft flying at 5,000 feet had been set out. In the meantime, 'the range deficiency of the TR9 was overcome by using mobile ground R/T relay stations, sited 30 or 40 miles forward of the sector RT station'.


See reference section for radio info

Click on the pictures to enlarge.

Part numbers shown under

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Original MK I Spitfire areal attachments *

The early Spitfires used the TR9 radio set these were replaced with VHF around the time the Battle of Britain ended

 The TR9 radio required a wire running from the areal  to  the tail.

The two parts shown are the attachments used to connect the wire to the mast and the tail..

They are original and Spitfire only parts you can see the part numbers by expanding the pictures on the left. I believe uses parts to be quite possibly unique.

Above a MK II Spitfire you can see the wire from the areal, to the tail the two parts available attach to the areal mast and the tail.

Available in the airframe section link here.

Click on the pictures to enlarge them.

Marconi RFC WWI communication exchange (pg 1 rad)

This is  superb and historically important piece. It is probably the only surviving one of its kind and the earliest example of air to ground communication in a Military application.

  Marconi built things by hand to a very high standard  the box is made from teak and is top quality carpentry with dovetails.

During WWI it soon became obvious that heavier than air aircraft had a vital role to play in recon. They were much more flexible than balloons or airships being able to cover large distances quickly and efficiently, communication with the ground however was a big problem and the famous Marconi company was called in to find a solution.

Initially aircraft had to land before the crew could pass on information and were often so cold that even when back on the ground they needed some time before they could report. It was therefore essential that a means of communication was established to allow live reporting. Early receivers were to heavy and bulky to carry on early aircraft and so only a one way communication was possible via a transmitter.

Click on the pictures to enlarge them.

This painting, by Emile Antoine Verpilleux, shows the interior of a hut near an artillery position. Messages from Observers in the air, reporting where the shells fired from their side were falling, were transmitted to the gun positions by means of wireless and then megaphone. The photographs on the desk are aerial reconnaissance photographs (taken by Observers) which were also studied for potential targets.

Voice communication was also problematic, signals were weak and the noise of the engine and wind made it practically impossible to hear what was said. Morse was therefore used to transmit information using a simple grid system.

  Individual aircraft were assigned to a single battery. They identified the battery from the air by means of markers, targets or shot fall was then reported via a transmitter on the ground connected to a simple exchange which is the piece shown.

This particular piece has two headphone sockets and therefore was probably operating by two controllers. The controllers then passed the information on to the relevant place this could have been a command centre or direct to the battery. The box also has two Morse tappers and I believe these were used to alert the battery that a message was about to be received.  Fromm the information shown on the lid of the exchange this communication was developed to report bombing raids, training and areal photography.

 Air Chief Marshall Dowding  saw the potential of this system through His own experience on the Western font and ultimately developed it into an early warning system for Britain prior to WWII and the Battle of Britain using basically to same system information being relayed from radar stations and the observer corp. to ground controllers who then coordinated and communicated this information to squadrons via small exchanges.

This advanced system born from WWI allowed the much smaller RAF Fighter command to defeat the might of the Luftwaffe.

The box is basically a complex switch or exchange with two head phone sockets and two Morse tappers. Early aircraft in WWI only carried transmitters and could not receive due to the weight and size of receivers. Voice communication did not work well so a simple system was worked out using Morse to correct shot from battery's using a grid system. The exchange was connected to a receiver on the ground and the operators received communications from the aircraft, they then used the Morse tappers to alert the battery or operational control that a message was about to be received and then connected them direct to the aircraft.

I believe the coloured markers on the LHS of the lid identify battery positions or control centres and would be marked on a map. These point to specific aircraft via arrows. According to my research individual aircraft were assigned to a specific battery or group of battery’s and identified the one they were working for from the air by means of a marker placed on the battery, before reporting on targets and the fall of shot.

 There for it makes sense that the coloured markers point to individual aircraft. There is also reference to bombing, training, photography and signalling on the panel, I believe these operations were reported back to the ground via the operators in the same way that spotting for battery’s was carried out. 

Apparently pilots and crew got so cold that upon landing they needed a considerable time to recover before they could report what they had seen or done and that transmitting from the air considerably improved operations particular improving spotting for batteries and targets which were hidden.

As more aircraft were fitted with wireless transmitters an intermediate was required so the information reached the right place and that was the purpose of this switch box.

One selection available was an open channel, references I have found to the use of the open channel involved the transmitions of SOS signals so probably gave the Pilots a chance of being found if shot down.

Out of stock

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Lancaster Aerial (pg 1 rad)

Here is an aerial used on Lancasters and possibly other RAF wartime heavy bombers, it is complete and quite long measuring 5 ft 2" or 157 cm.

Seen in situ below fitted to a Lancaster

Click on the pictures to enlarge them

A/M 10B/13178

Because of its length it may be expensive to send overseas so please contact me for a quote before ordering. I will most likely send in a cardboard tube.


Click on the pictures to enlarge them.

RAF 1154 M Radio A/M 10D/1587 pg 1 rad)

Here is a classic 1154 radio used in Lancasters and other heavy Bombers. This one is clean and externally complete although there appear to be components missing internally and the top plate is missing. The printed sheet on the front is not original. Still a great display item.


A/M 10D/1587


Overseas buyers please contact me for a shipping quote


Click on the pictures to enlarge them.

RAF WWII radio jack A/M 10H/2205 (pg 1 rad)

Boxed unused radio jack for connecting the flying helmet to the radio intercom system used in practically all RAF WWII aircraft.

Dated 25th June 1945

A/M 10H/2205




Click on the pictures to enlarge them.


Ultra Electronics Speech Unit Sarah (pg 1 rad)

This seems to be some sort of portable Microphone transmitter and receiver possibly for use in Emergency. Made by Ultra Electronics Ltd of London W3. The areal is stored in a container and is made of spring steel, when the cover is removed it flicks up.  I have never seen one of these before.

Type B174  10U/16870  the main unit has  a crack in it but otherwise its in good condition and appears complete. Its clearly designed to plug into some sort of radio unit..

Click on the pictures to enlarge them.

Its 100% for aircraft use as its A/M marked. The areal unit is Type 1308 A/M 10 AP/1560


The Company was started by Teddy Rosen in 1920 as Edward E. Rosen & Co. manufacturing high quality headphones. In 1923 the company moved to new premises at Harrow Road, London and in 1925 a new company Ultra Electric Ltd. was formed. Ultra introduced its first mains powered wireless set in 1931. After further expansion the company moved to larger premises at Erskine Road, Chalk Farm, NW3 in 1932 and also built a new 150,000 sq ft (14,000 m2) factory at Western Avenue, Acton, W3 in 1935.[2] Ultra manufactured a wide range of domestic radio receivers including the Blue Fox, Lynx, Panther and Tiger models. In 1939 Ultra presented a television receiver to the market for the BBC High Definition Television Service which was transmitted on 405 lines from the studios at Alexandra Palace, north London.

During World War II the company diversified into building tails and bomb doors for the Short Stirling aircraft and clearly also continued to produce radio equipment for the RAF.  




RAF Radio Testing Set (pg 1 rad)

Here we have a Radio Testing Set as Used by the RAF. It was used to tune and Calibrate all aircraft radios used by the RAF.

The Catch on the front of the box is missing

Testing Set

Telephone W.T.A MK II Receiving

This has a RAF reference number 2501

This is Manufactured by S.G.Brown Ltd

 Currently Out of Stock More Wanted Contact Us


TR9D Control Lever 2 (pg 1 rad)

Very rare send/receive control lever from TR9 radio. relic condition.

 Used in Spitfires and Hurricanes fitted with the TR9. This one is unrestored condition does not function


See reference section for radio info


TR9D Control Lever (pg 1 rad)

Very rare send/receive control lever from TR9 radio. Restored relic condition.

 Used in Spitfires and Hurricanes fitted with the TR9. Does not function for display only.


See reference section for radio info


Out of stock more wanted contact me.

Spitfire areal mast (pg 1 rad)

This is a  Spitfire areal mast. Strangely these are made from steel with a wooden insert. Complete with its wooden insert in excellent serviceable condition

Click on the picture to enlarge .



Click on the pictures to enlarge them.

Spitfire Antenna Mount (pg 1 rad)

Here we have a 100% Original mount that was used to attach the aerial to the spitfire fuselage.

These are quite rare as they are made of wood so they became rotted

It was Fitted to the fuselage Just behind the cockpit to allow the fixing of the Aerial

The Aluminium has Corroded however the Rubber and the original wood still remain

This was removed from a Crashed Aircraft at RAF Northolt


Spitfire radio tuner (pg1 rad)

Here we have a radio tuner as fitted to Spitfires, Hurricanes and probably other RAF fighters.

Type 5003 A/M/110J/71

 It has an Air ministry stamp and so was made for use in RAF Fighters. It is in good original  condition.  This particular model was used in conjunction with the TR 5043 radio. Fitted to the LHS of the Spitfire cockpit seen in situ below. Produced in the US and supplied to the RAF under lend lease.


Click on the pictures to enlarge them.


TR9 Radio control (pg1 Rad)

Here we have a radio remote control unit for the TR9 as fitted to Mk I and MK II Spitfires and Hurricanes. It needs some restoration work as the levers are seized. It is also missing the knob that attaches to the front I have one of these and it will be supplied with purchase. Would make a nice project for someone and needs a bit of time and patience rather than specialist knowledge and tools. This is an extremely rare piece being in use for only a very short period during the Battle of France and Battle of Britain.


I have recently been told this one was fitted to a Hurricane due to the attached bracket.


Seen below in situ in a MK I Spitfire



 Out of Stock More Wanted Contact Us

Click on the pictures to enlarge them.

RAF Portable Telephone exchange  (pg1 rad)

Here is a portable RAF telephone exchange dated 1942. Used for use in the field this unit is well used original condition appears to be complete but would benefit from a good clean. Also used by searchlight crews and observation posts during WW2.


Three available in similar condition


TR 1934 Transmitter  Radio


A very nice TR 1934 transmitter..


£180 .

Morse training aid (pg1 rad)

WW2 Morse Training kit. It is in Good condition working order



Morse training aid 2 (pg1 rad)

WW2 Morse Training kit. It is in Good condition working order


Click on the picture to enlarge


Wartime Radio crystals (pg1 rad)


Some with A/M crowns. Specify what crystals you need 

£15 each .

Spitfire Radio TR 5043 (pg1 rad)

Click on the picture's to enlarge them


This is an extremely rare and sort after original and complete TR5043. This particular model was used by the RAAF.

The TR1143 was also a VHF set but the controller, although of the pushbutton type had the round type plug on the reverse. I understand that when the USA entered the war there came a need for common R/T between American bombers and their RAF escorts. I suspect that at this point the USAAF was introduced to the TR1143. They took this and created the SCR-522 (24v) and the SCR-542 (12v).

TR5043 (SCR-522/SCR-542)

Externally the TR1143 and the SCR-522 /542 were the same and used common connecting plugs, fittings and leads. The internals were slightly different though and I have heard that the build quality on the US sets was superior - perhaps due to the materials and components available to them. At some point the US supplied the SCR-522 back to the RAF on lend-lease under the designation of TR5043. Air Ministry items produced on a lend-lease basis seem to have both a items US & AM label on them.    

The TR5043 (SCR-522/542) was used in later Marks of Spitfire, Mosquitoes and both the P47 and P51 when the latter took over the USAAF bomber escort from the RAF. 

 Info supplied by Micheal Clark

See reference section for more details on radios and transmitters.



Click on the picture's to enlarge.

R1082/3 First Airborne Jammer(pg1 rad)


This is an incredible piece of History and an almost unique item. The TR1082/3 Wavemeter.  Please read the article I found about this unit under. The very first airborne jamming unit dated from the late 1930's through to the Battle of Britain. In superb condition nothing has been messed about with internally its original and complete. It even has its original carrying strap.

Click on the picture's to enlarge.


Handley page Halifax Trim(Page2 cont)

A really nice and extremely rare wheel for a remote D.F. loop drive (aerial). Would be located in the Wireless Ops position, of the Halifax. A/M crown so manufactured before 1944.

A/M 10J/10595

For sale in the controls section click here


R.F Unit for Gee (pg1 rad)


This is superb very early R F unit used in conjunction with Gee the first airborne radar. The frequency on these units altered to avoid enemy  radar counter measures.  Air ministry crown so manufactured before the end of 1943. Fitted to Lancaster's, Mosquito's and other RAF aircraft along side the gee unit.

RF type 23 A/M 10D/1016 serial nos G 23112.




R.F Unit for Gee B (pg1 rad)

Included is a new replacement tuning knob


R.F Unit 3 for Gee  (pg1 rad)


Switchbox Type D 5C/2467(pg1 rad)


Type D switchbox contains two 5C/543 type B switches. It is primarily used for controlling the power supply to airborne navigation systems which require AC current, such as GEE (A.R.I.5083) and Mandrel (A.R.I5171)


TR9 Radio selector (pg1 rad)


An unusual radio selector box made in the US for the Air ministry. Known to be fitted to Canadian MK XX Lancasters and probably used in other aircraft to allow communication between different radios sets.

Canadian built Mk XX Lancaster converted post war to a rescue role.


click picture's to enlarge

Aerial change over switch/Rebecca (pg1 rad)


A/M 10FB/366.





Visual radar receiver tube Village Inn

Click to see this is Gunsight's


This is mint new in its original box and dated 1943.

B24 Liberator IFF Radio destruction Control (pg 1 rad)

This is the USAF version of the IFF (identification friend or foe) and radio equipment destruction control.

This unit was used to destroy the IFF and radio equipment if the aircraft was forced to crash land in enemy territory. The B24 Liberator was used by both the RAF and USAF. The RAF and USAF used  compatible radio systems and the Spitfire had a similar unit on the RHS of the Cockpit.

You can see this unit in situ in a B24 Liberator Cockpit below above and left of the Co Pilots control yoke.




Click on the pictures to enlarge them

Lancaster R 1155 Radio receiver 1 (pg 1 rad)

Fitted to Lancasters and other RAF wartime bombers. It is in nice original condition.

Corrected by a visitor Thanks Rob

Just thought you would like to know that the complete R1155A receiver listed on your radio page was only used during the war inside Halifax heavy bombers (denoted by the type suffix 'A' on the serial plate).

A Halifax bomber





Click on the pictures to enlarge them

Lancaster R 1155 Radio receiver 2 (pg 1 rad)

Fitted to Lancasters and other RAF wartime bombers. It is in nice condition and looks to have been modified as many were for use as a civilian radio post war.

 You should seek expert help before attempting to get it working and we are selling it as display only.






Click on the pictures to enlarge them

Click on the pictures to enlarge them

 R1155A Radio receiver (pg 1 rad)

Here we have a Marconi R1155A Radio Receiver. This was used in the WW2 Bombers such as the Lancaster and Halifax. The Airspeed Oxford was also equipped with these used to train potential Radio Operators

The R1155 was manufactured as models R1155, R1155A, B, C, D, E, F and L, M, N.

Of these models R1155, R1155A, B, C, D, E and F were intended for use in aircraft.

Model R1155 had no filters, A had the IF traps added and B also had the radar filters. D, E and F were the corresponding receivers with steal case instead of aluminium.

This R1155A is in a good original condition with none of the switches missing or broken.

This has R6533 written next to the Data Plate. This corresponds with the serial number for an Airspeed Oxford

Ref No: 10D/820

 You should seek expert help before attempting to get it working and we are selling it as display only.

Out of stock more wanted contact us

Radio Control Box (pg 1 rad)

Wartime 10A/14983 unit 10AB radio/radar control box. The looks to have a fitting for an antenna and so I would suspect it has something to do with tuning the antenna. Wartime issue with nice brass plate and kings crown would be for use in heavy bombers such as the Lancaster.

Click on the pictures to enlarge them




Click on the picture to enlarge

Pre war 1930s Morse Key 2 (pg 1 rad)

A nice original Morse key in good condition. This piece was found on many RAF WW II aircraft and this particular all metal model was fitted to Pre war aircraft such as the Gladiator. In the Spitfire it was fitted to the RHS of the cockpit but these were generally the Bakelite version. The Lancaster had two fitted to the main instrument panel. This early model is made of alloy.

Out of stock more wanted contact me


 Identification Light Morse Key 1 (pg 1 rad)

A nice original Identification Morse key in good condition.

 In the Spitfire it was fitted to the RHS of the cockpit.

The Lancaster had two fitted to the main instrument panel.

 This is the Second Pattern Bakelite version.


We currently have seven in stock

Click to Watch this video clip showing this radio fitted in an Anson

The video clip was taken from The secret war series Video volume 1 Battle of the Beams.

Click on the picture's to enlarge.


Hallicrafters S27 Ultra High frequency communications receiver.(pg1 Rad)

This radio was requisitioned by the Air ministry early in 1940 it being the only commercially available radio receiver with a high enough frequencies to detect the German navigation radar beams. They were fitted in Avro Ansons enabling them to locate the direction of the beams.  A desirable piece of Battle of Britain History.

Battle of the beams

Churchill ordered a flight to try to detect the beams.  Avro Anson's were equipped with an American Hallicrafters S-27  (then the only known receiver capable of receiving the 40 MHz signal)  The Anson was far from ideal being slow, cold and extremely noisy. It was the only aircraft capable of carrying the radio set and the motor-generator set required to power it that could be spared. The motor-generator was required because the S-27 was a mains powered set but the Anson only had a 28 volt DC electrical system.

 The German Lorenz directed an aircraft down a line, so two crossed beams could be used to fix a single spot. Several systems based on this idea were studied through the 1930s. Lorenz had a range of about 30 miles, enough for blind-landing but not good enough for bombing raids over England.

 In addition the beams of Lorenz were deliberately set wide enough that they could be easily picked up at some distance from the runway centre line, but this meant their accuracy at long ranges was fairly limited. This was not a problem for blind landing, where the distance covered by the fan-shaped beams decreased as the airplane approached the transmitters, but for use in the bombing role this would be reversed and the system would have maximum inaccuracy over the target.


B17/B24 Radio reciever(pg1 Rad)

 Radio receiver fitted in B17s and B24 Bombers good original condition. The B17 receiver you have listed is a Marker Beacon Receiver and is used by bombers to find their way back to the point of origin when flying back from a mission. Info supplied by Spitfire Spares customer.

Seen under in situ in a B17

Click on the Pictures to enlarge them.

Lancaster Aerial 1(pg 1 radio)

Click on the Pictures to enlarge them.

This is a nice original Aerial taken from a Lancaster . It is still mounted to the bracket that attaches to the aircraft.

 Almost certainly fitted to other types of aircraft although I was assured by the seller an author who has written books on the subject this was  taken from a Lancaster.

£175 .

Click on the Pictures to enlarge them.

Lancaster Aerial 2(pg 1 radio)

Click on the Pictures to enlarge them.

This is a nice original Aerial taken from a Lancaster .

 Almost certainly fitted to other types of aircraft although I was assured by the seller an author who has written books on the subject this was  taken from a Lancaster.


£175 .

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