German FUG 10 aircraft installation.

German FUG 10 airforce radio installation

FUG 10 means: Funk Gerät 10.

The Fug 10 is a very complex radio communicationsystem for communication  between airoplane to airoplane (Bord zu Bord) and from airoplane to ground (Bord zu Boden). It consists of several receivers and transmitters for the shortwave and long wave and a lot of remote controlls. In other circumstances it is combined with navigation purposes. (Peil G6 with EZ6 receiver, then called Fug 10 P).

The transmitters are very stable in frequency, by using special temperature compensating arangements  in the oscillator circuit. Consider, that this oscillator is not crystal controlled. The heat inside the cabinet is very high, because the principle is a MOPA transmitter in a very small cabinet. The oscillator valve is RL12P35, which much deliver much driving power to the power amplifier. This power amplifier has to deliver about 60 watts to the antenna at CW mode, by use of 2 RL12P35’s.

Kl-details-Lorenz-C5-Block-1-2 (1)

This arrangement was not only the use of ceramic material, but also a special condenser block in the circuit of the oscillator. Just see the picture above.

These condensers had a big dielectric loss with a particular temperature coefficient. More about this a extended explanation in the post EZ6 DIRECTION FINDER.


Displayed in the picture above my Fug 10 equipment. It is in working condion! I use the the short wave transmitter and receiver in the 80 meters amateur  band and made several contacts. The frequence stability is amazing!

Most units (EK,EL,SK FBG3, SchK13 and U10E ) are in working condition. Upper row “Funkerschaltkasten (switchbox), EK receiver  (shortwave 3-6 Mc), EL receiver (long wave 300-600 Kc). Mid row “Fernbediengerat” FBG3 (tuning the antenne tuners, switching antennes etc.), SK (shortwave transmitter), SL (longwave transmitter). Lower row “Eigenverstandigung Verstarker” RG 10 (intercom amplifier etc.) , “Umformer” U10 e (rotating power transformer for the receivers).At the back of the rack are placed, not visible on the picture,  the AAG2 antenna tuner and the transmitter  rotary transformer U10S.

The picture below an older version of my FUG 10.


On the left lower row, a important control unit, the FBG 3, explained later in the post. At the front 2 knobs for tuning the AAG for matching the antenna to the transmitters for long wave and short wave. One knob for long wave (blue) and the other for short wave (red) . This knob is mechanical attached to a synchro motor system. In the mid the antenna current meter. With the big switch, with scale, in the mid, you can switch the transmitters either for long wave are short wave and which antenna to be chosen. Normally one short  antenna f

or short wave, and a long antenna, the trailing antenna, for longwave. It is possible to change the long wave transmitter from trailing antenna to short antenna, so the short wave transmitter from the short one to the long one. This in case, one of the antennas is broken.


In the above picture you can see at the left de ADb ‘s (Anschluss Dose ). In this case a ADb13 type. It is a remote connectionbox for the microphone-telephones in the oxygencaps of the crew. At the right the U-10-e rotarytransformer for the receivers.


On this picture above,  you can see the trailing antenne  type AH-10. At the front of the “Funker Schalt Kasten” is a switch to move the antenna wire up or down. Also a indication meter is placed, for how far the trailing antenna is released.

The FUG 10 with the fully working AAG 3. Note that the trailing antenna is also there, which came later in the collection.


The vacuumrelay for the antenna.

The inside of the AAG. Left the vacuum relay. When pushing down the CW key, the relay comes up. When releasing, it falls down again after a few seconds. This is working very well and pleasant. Above the long wave variometer. Above the variometer, the indication scale of the tuned frequency, the same scale is on the FBG3 control. Both he scales are turning synchron with tuning.


Another view of the AAG. At the left, the short wave variometer to be seen. Just in the mid, the synchro -motor for driving the variometer coils. This motor is driving by a “Drehfeld  System” , a kind of electrical achs, coming from a same type of synchro in the FBG3. This synchro is turned by hand with a knob, with same scale as on the AAG, to tune the match.


Here the AAG on the testbank and wired up. To see if it is working. To the left the schematic of the manual. Lateron it is connected  to the FBG 3 at the FUG 10 display. And could be working from the FBG3 unit.


German Y-Peiler receiver SADIR R 87 E.

Some time ago, I bought a fine looking German receiver, the R87E SADIR.

It is a VHF directionfinder receiver, frequency covering 66 – 120 Mhz.

A picture is shown below.


The receiver was made in occupied France by for instance SADIR-Carpenter located in Paris.

It was used by the Luftwaffe as a direction finder in the Y-Peiler system. To find the location of the bomber plane groups, flying over Europe to the the german cities and industrial factory location to destroy them.

The code name was FuSan A81bb1 or Pulm SK. SK means short wave.

But to increase the frequency coverage in order to receive more ennemy frequencies, there were several  receivers with different frequency coverage. And different code names.

See a list in the picture below.

Y-Peiler Sadir

With the aid of other Y-Peiler stations, the could find the location of the squadrons, in order to intercept them  by delivering the info to the airfields centers with the  fighter planes.

The system was very effective.

An example, the use of my receiver, the type E:

In most allied bombers and fighterplanes, there was a transmitter receiver, the SCR 522, with TR 5053 of 10-150 Mhz, and the British type TR 1143, 120 – 150 Mhz. onboard for communication. The trx were crystal controlled. It had 4 channels in this range.

This trx also had a socalled “pip-sqeepe ” channel. Periodically , this channel transmiitted a short signal.  With the aid of the signal, directionfinder station on airfields in The UK, could determine the position of the bombergroups in that way. See also in the post             for explanation.

So the SADIR receiver, R87E, with frequency coverage 66-120 Mhz was very suiutable to receive this signal from especially the American bombers and fighters to locate them (TR 5053).

Below some pictures of the SADIR receiver as a Y-Peiler.

FuSAn_733_in. Sadir jpg

Picture above the SADIR receiver in the radio hut as a Y-Peiler.

FuSAn_733_box Sadir

Above the radiohut of the Y-peiler.


Picture above another Y-Peiler station.

In the picture below, a situation of the Y-Peiler system, called  Y- Stellung,  in German.


Below some pictures of the inside of my SADIR receiver. Because it was made in France, they used American radiotubes in it. The acorn tubes 954 and 955. Also the 6K7, 6L7 and 6Q7.

s-l1600 (7)

s-l1600 (6)

s-l1600 (1)

So this SADIR receiver is a very interesting VHF receiver. With a great history.

Aircraft receiver type EK3


The EK3 receiver,  the front panel.

Recently I purchased a new german receiver, the EK3. Which is pretty rare to purchase.

It is part of the aircraft installation, the FUG 10K3.

It was devoloped at the end of the war, about 1943. The matching transmitter is the S10K3.

It has a different frequency coverage. This to compare with the EK10 receiver of the FUG 10.

Frequency coverage is 6 – 18 Mhz.

It is suitable for mode A1 en A3.

It was used in conjunction with the normal used FUG 10 installation,  Also with a radiocompass Peil G6, a blind landing installation  FuBl 2 and with a seperate unit with the FUG 16. All these were mounted in the fuselage of a large aircraft, like Heinkel HE 111 or a Dornier.

The case was not there, but all was original inside, also the front was original. The case is a bit problem, because its dimensions are different from the case of a FUG 10/EK10 receiver.

Below some pictures of the receiver.


the backside.

$_85 (5)

the under view without cover plates.


A view of the other side.


Wireless set no. 19 mk 3 Canadian .

The wireless set no 19 was used in the field earia, in radio vehicles and also in tancs. It was, just like at tyhe britisch troops, a general purpose transmitter, providing 2,5 watts on phone and about 5 watts in CW.

Just on the top of the set, the crystal calibrator, a spare case box and CW morsecode key is to be seen.

WS 19 Canadian

Here is shown the WS 19 mk3 field radio complete.

WS 11

Transmitter Receiver type Wireless Set no. 11.

Australian version.



This is my army transmitter-receiver WS no. 11 Australian in working condition on 7 Mhz..

It was manufactured by A.W.A. Amalgamated Wireless Australasia.



A close look at the front.  The frequency control and the HF powerindicator meter.



The chassis above with in the midle of the picture, the 807 poweramplifier tube, also the PA coil.



The under side of the chassis.



The transmitter dynamotor supply. This is activated when the transmitter is working on high output level. It supplies the extra high voltage of 350 volts to the poweramplifier tube 807 for increasing the ouput power.



The low power dynamotor supply unit. It is activated when the receiver is working and also supplying HT voltage of 220 volts to the poweramplifier on low output selection.



Both the powersupplies


The wireless Set no. 11 australian in a truck no..  1. This is a original waretime picture.


At last the original schematic paper of the WS 11. This paper was also put to the undercoverplate of the chassis.


Wireless Sets no 11 under test,  in a service division of the Australian army.

WS 101

Wireless Set no 101 Australian transmitter/receiver.

The set has been used in WW2 by the Australian Army. The manufacturer is A.W.A. Amalgamated Wireless Australasia, a Australian manufacturer.


The whole set is in excellent condition. Also the inside is excellent.

Just a museum piece.






Below the pictures of the inside of the WS 101.

As you can see, like new. But still a wartime transceiver.

The pictures below, shows the beautiful inside of the transceiver.





The Wireless set no 101 Australian at the Australian Army.

Type 94-5

Japanese transmitter- and receiver, type 94-5

The 94-5 transmitter, model 32,  a small portable transmitter for the Japanese army for short distance. It was used in the Asian part  of the war front as a portable radio station between the battalions. The receiver, used with this transmitter, is the mark 32, a receiver with a regenerative detector.

The transmitter is a very nice constructed one, all the components are labelled by numbers, the functions of the controls on the front by text plates ,  ofcourse in the Japanese language. The various components, like condensors, variometer coils etc. are very small. The transmitter is like a treasure, a museum piece.

The transmitter can be VFO, or crystal controlled. The frequency range is in 3 overlapping frequency bands from 0,85 to 5,1 Mhz. The receiver has 4 overlapping frequency bands from 0,369 till 7,6 Mhz.

The output of my transmitter is about 150 mWatts on phone, on telegraphy about 500 mWatts, at a load of 50 ohm.

 It can be used for phone and CW.

The only tube in the transmitter is a double triode, type UZ12, also can be used the American type 19 with heatervoltage at 6 volt instead the 2 volts for the Japanese type UZ 12. In my transmitter I used the type 19.

The tubes in the receiver are UF134 RF amplifier, UF109A regenerative detector, UZ133D audio amplifier. No crystal controlled frequencies.

The powersupply is either a mark 19  manually (hand cranked) operated generator or dry batteries. The earial is a longwire with counterpoise.

For CW, both sections of the radiotube are connected in parrallel and function as a HF oscillator, driven by a crystal or acting as a variable oscillator, VFO.  By inserting the crystal, the oscillator changes automatically from VFO to crystal control. This by opening a closed contact by inserting it.

For phone, one section functions as a HF oscillator, the other one as a AM modulator, driven by a throat microphone. And that’s all for one tube!!

It should be mentioned, that the CW signal is quite stable in frequency if you use crystal control. A very steady and stable CW tone.

The crystals, being used, are special. Instead of the normally pin connections, it uses side connections, a smal plate is used for this, to make contact in the holder.

I already have made some qso’s with other radio amateurs in The Netherlands on the 80 mtr band with the mode CW.  My antenna was  a 20 meter dipole antenna, My report was RST 5.5.7.

The first picture explains the Japanese signs on the type plate.

Note the red plate in Japanese for “enemy listening too”. It is mentioned on every Japanese radio transmitter. This text is also mentioned often on german transmitters of WW2. So mind what you are saying!


The next pictures show the beautiful inside and outside of the transmitter. Even the earial HF current meter on the front is still working after all those years.


The front with 2 pictures on the lid, showing the schematic and the frequency calibration.

test demo

Test bank view.

Transmitter is connected to an external powersupply unit. HT is 150 volt DC from a regulated stabilised powersupply. LT is 6 volt DC from a lead acid battery. The last one makes a good hum free signal.


The case with leather covering. At the lid at the left of it the frequency calibration diagram, at the right the schematic diagram for service.

94-5 upper

The PA valve (19) with tank coil.


Another inside view.

94 5 ceystal controlled

The antenna current meter, indicating, the transmitter is working on test, by pushing the morse key.


A modified crystal base, using FT 243 crystals in it.


The frequency of the output signal on the frequency counter.

50 ohm dummy

The dummy load, impedance 50 ohm. Note reading on the scale is not calibrated in HF amperes, just an indication!


The schematic diagram, and my own notes, which explains all the functions of the Type 94-5.

Torn. Fu. b1

This is a transmitter receiver which was in action by the troops in the frontline. Or also used in small cars like the “Kubelwagen”.My set is of the year 1936, is fully in working condition on Phone or CW in the 80 meter radioamateur band with only 400mW output at the antenna.

Watch the text “Feind hort mit” on the front. It is a warning for the radio operator that the enemy is listning too. So mind your words.




The first picture  the Torn. Fu b1  near the receiver KWEa . The second and thirth  picture,  the Torn. Fu. b1 in action at the radio fielddays at Kootwijkerbroek in 2002. It is me on the second picture working with it. The antennais a replica toploaded vertical, a copy of the original one. I made at this field day many pleasent qso’s with the mobile station PA0LCD, now PA0AM, Cor, in the neighbourhood of Kootwijkerbroek. The Torn. Fu b1 was doing very well with its 150mW phone modulation. My experience is, working amateur stations at a bigger distance, only CW is suitable, because it’s low power output.


Picture above: German Army on his way with the Torn. Fu b1 as a man pack at his back. At the back of the left soldier, the battery case  of the B-1.


Funker somewhere in winter Russia.


Funker in Trench, where?

Tornister EmpFänger b

Tornistor Empfanger b (Bertha ).

The receiver is build in 1940 by Telefunken.

This shortwave receiver is a direct conversion, 2 stages HF , 1 “Audion” detector and a LF stage. All tubes are of the type RV2P800. The feedback or reaction gain in the detector stage is tuneble with the little knob below the small scale of it.    This makes the receiver suitable for CW and even SSB and becomes then very sensitive and selectief.

It is a very well working receiver for listning at the amateurbands.

The headphones is the DFha. The elements have an impedance of 2000 ohm.

It is used by the army (Wehrmacht) in the field, it could be carried on transport, at the back of the wireless operator.

It was also used in radio vehicles as a mobil station.

Tornistor E b

Tornistor Empfanger Bertha from 1940.

EWc up

This is the vibrator powersupply, type EWc,  for 12 volt DC. Used in vehicles.

EWc top

View on the upperside of the EWc. Left the vibrator and filement resistor lamp. At the right the spares.


Here in the mid, the vibrator powersupply, type EWb. In use for the Torn. Eb in portable situaties. The supply is the 2 volt DC from a lead battery. This battery is shown at the left, type 2B38. At the right a copy of the HT static battery for 90 volts DC.

All the 3 item are housed in a special battery case,  mounted just below the receiver.


Radione equipment.

Although these radio’s, like a R3 receiver and a RS20 transmitter,  are not  in my collection anymore, I decided to keep the whole post in my website. This because a lot of documentation and pictures is in it. Probably people can make their advantage of it.

But.….. a little time ago, I purchased a new Radione R3. This because it is just such a beautiful and handy shortwave receiver. See pictures below.



The R3 is a beautiful and well working receiver. Only the cabinet and front has been repainted.  But it is a good original color. Also the vibrator power supply is missing. But maybe it can be placed from a spare receiver in future.

This equipment was used by the Navy (Kriegs Marine), often on small ships.

Also it  was also in use by the German Abwehr and even by the Wehrmacht in bunkers.

The receiver type R 3 was used in combination with a small transmitter called RS 20, but also with the transmitter Lo40K39f. Frequency covering for the the R 3 is 2 Mc-25 Mc. The tubes inside the receiver are all different and are also  called: “Stahlhelm Rohre”. It has a build in  power supply for 110 120  or 220 volts and a vibrator supply for low voltages like 12 or 24 volts.

The transmitter RS 20 covers 3.000 Kc – 14.600 KC in 3 bands. It is for AM, CW and MCW. With this combination I made so many excellent qso’s in the 80 meterband, crystal controlled with AM.

The RS 20 transmitter.



radione opstelling

Tuned at 3705 Khz.

RadioneR3 aftemschaal


Here an original picture of a wireless operator or “Wehrmacht Funker”, working with the RS 20 and R3 in a bunker. Left a DR 78 transmitter/receiver, made by many manufactories , for example also Philips, in WW2.

Navy receiver LO 6 K 39, former German Kriegs marine.

Normally it was produced by the German manufacturer C. LORENZ AG, in Berlin Tempelhof, but also by  others, for instance in Austria during the “Anschluss” with Nazi Germany.

It is a amazing design for a TRF receiver.

LO 6 K 39 1

The receiver in the picture above is made by Schrag Ericson in Wien Austria. Typical are the missing name plates on the front, while on types, made by Lorenz, they are there.

On the blue nameplate, there is also a code  of 3 characters, called bvx. This means that the manufacterer is Schrag Ericson in Wien, Austria. Although on the Lorenz receiver, it is missing, only the date of manufacter is there. Normally BOU stands for Lorenz AG.

It was in use by the German Navy on their war ships like the Schwerer Kreuzer,  Prinz Eugen, Bismark for example.

Also used in the desert by the “AFRICA CORPS” of Rommel.


2 maal LO 6 K39

On the right another receiver, made by Lorenz. This one is working very well.

The Lo6K39  a is s a short wave TRF receiver, covering 8 frequency bands from 3000 kc till 25000 kc. There or more versions like the d type, which differ in frequency covering and some hardware.

It has 3 HF stages, for each frequencyband 6 tuning coils, 1 audion stage, 1 LF stage and 1 crystal calibrator stage. All stages contain a RV12P2000 penthode valve.

The receiver has a great selectivity!  Because it has 6 tuned circuits in front of the detector stage. Warning: don’t try realign these circuits, it will end into a failure!

Also a CW  LF filter at 800 Hz is included ( Tonsieb ). This makes this receiver to a excellent choice for detecting CW signals. Just a 8oo Hz tone, no noise etc..

Also the crystal calibrator workes well. It gives 100 Kc signals all over each wave band. However in my receiver, the Austrian one, it has been removed.

Furtheron, the receiver has been excellent screened at all fronts. Also the poersupply lines in side were also fed through by many chokes. Because they were very afraid, that the radiation of the detector would come outside the receiver. So would be noticed by the allied listning stations. But because of the 3 HF stages, it was most unlikely.


Another reason, the the German Kriegsmarine did had  chosen for a TRF receiver, instead of a super heterodyne concept, was:

They were very afraid for receiving socalled gost signals. Signals which were in fact not there. At the war ships, there were plenty transmitters in use, with their antennas close together. There might be very much spureous signals in case of a superheterodyne receiver.  At the TRF concept, is what you hear, is also really  there. No doubt about that.

The reaction of the audion stage is variable. The down left knob is a twin one , the centre knob is intended for the gain ( audio ), the outer one is a kind of frequency shift, from the centre of it’s scale you can vary the frequency 3 kc downwards and upwards. This workes very pleasant for receiving CW or SSB signals.

The audio impedance is 4000 ohm. A original headphones, a Dfha, is suitable for this.

The powersupply is inside the receiver cabinet.

The weight of the receiver is 65 kilo’s!



The schematic diagram.



LO6K service meter and switch4

On the above right corner is a little meter , you can measure the HT en LT  of the power supply. This doing by pressing or depressing the one of the 2 little knobs on the meter.  With the switch below, you can measure the kathode current of all the valves.

Just left above there is a black cover, which covers a neon lamp, this neon lamp protects the receiver input from the very high HF voltages from other transmitters on the ship (200 volts pp Voltage max.). The HF voltage part of the electro magnetic field, is very high, because of the short antennas , which establish this HV field especially and the high power output (hundreds of watts) of the transmitters in use.

Waveband drum

Above the view of the drum containing  the tuned circuits  units of each wave band. The coverplate has been removed for showing it.



A side view of the receiver, in the holes, the valves RV12P2000 are placed  in their sockets.

Waveband revolver fixation 8 steps

LO 6 part of revolver

The fixing plate (revolver system ) to fix the correct stand of the drum, for each wave band. The contacts are making correctly contact with the various stages in the receiver. With the big handle on the front panel, you can change the wave band. This by this revolver system. Very nice in this system is, that just before turning the drum, first the contact arms are lifted up, just after it, the drum is turning!  Then the drum is fixed correctly, just after that the contact arms are going down and make contact wth the contacts on the tuned circuits inside the drum. In this way, keeping the contact in good order! It is a amazing design!

LO6K39 018

Above the view of variable condenser for tuning the receiver. The cover plate has been removed for this purpose.

LO6K39 007

The beautiful tuning scale of the receiver. The receiver receives on wave band no 5, from 5,97 – 9, 00 Kc.

LO 6 K Scale lamp

The 12 volt lamp, for illuminating the frequency scale, just by lifting the cover. Also to see the handle for changing the wave band.

The case of the receiver.


This picture, I don’t know for sure, a Navy department, as a l istning station for the ships or Uboats abroad.  Varous receivers to be seen,


Unknown picture of the LO6K39. Maybe the Labor of the manufacturer, C. Lorenz AG in Berlin Tempelhof?  Hope someone can tell me. Pse your re. in  the comment below in this post.

NH 96462

Another rare picture of the LO6K39, in de radio room B (FunkraumB) on board the warship Prinz Eugen.  Just in the mid a contoll unit, for interfacing with the transmitter.

Finally some pictures of the replacement  of the contact fingers at the drum. Some  were broken. To do this, I had to dismantle the drum from the chassis. First dismantle the front, then unsolder the wirement of the radiotubes, the components and coils.

foto voorpagina

This was the receiver, where the contact fingers at the coil drum were broken. In beautiful condition, but not functioning.

To solve the problem,  I soldered new contacts from spare relais at the fingers. Then checked them in making contact with the drum contacts and rewired.  Put the whole thing together again, all bands were functioning again.

But it lookes all easy, but it was quit a job.

foto 1

Picture after removing the frontpanel. What a beautiful construction.

foto 4

Below the drum.



foto 3


The tuning capaciters, screening removed. Note in the mid, the potentiometer, which keeps the gain constantly over the whole range.



foto 2.

The removed  drum.

foto 6

Tuning capaciters removed, to acces the wiring.

dfoto 8

The new soldered contacts.

After the the project, I saw an advertisement on EBAY, of complete new contact fingers. A pity, I could buy  them not before. But maybe in future I will put them into the receiver.

foto 10

The new contact fingers.


KWEa Short wave receiver

“Kurzwellen Empfanger a (Anton)”


  • This receiver was in use by the “Wehrmacht”, especialy in radio vehicles.
  • This KWEa is an early type of 1941 and in fully working condition.
  • It has 11 tubes of the type RV2P800.
  • Frequency range: 980-1020 Kc in 5 bands.


A view inside the receiver. Very well visible are the tubes RV2P800 in there sockets. Right is shown the 2 gasfilled bulbs for protecting the HF-input. Very high voltages due to lightning in heavy thunderstorms are fed back then through them to earth. The various coil sets for the several frequency bands above right are turned around  via a kind of “Maltheser Kreuz” principle. When it begins turning, the contacts are lifted (open contacts), then the coil set turnes to its position, stops turning and after that  the contacts are closing again. In this way the contacts are kept pure and clean.

Below some other pictures of the beautiful receiver from the inside on the testbank.

KWEa front 1

Front inside with front removed, watch the beautiful wave lenght scale.At the left the pushbuttond for rading the correct currents of each tube, and the low tension voltage of 2 volts, the high voltage of the powersupply.


Medium wave stage upside at the left. Just in the lower mid the test voltmeter.

KWEa testbank 2

Testing the voltages of the different stages.

Frequency scale dial

The beautiful frequency band scale. Each band a different color.


 Charging generator GL.ERZ400 b

battery charger

ERZ front


The “GL. ERZ b” generator delivers 12 to 16 volts by 400 watts . This a very beautiful collectors item.

It was made by the manufacture  Auto Union, who was also the manufacturer of the well known auto autocar Auto Union, used by the Wehrmacht.

It was often placed in the turret of the german tanks like Panter and Tiger. Also seen in armoured car vehicle  “Panzer Spahwagen”, with the radio “Funksprech F” in it. It was ment to use it for charging the batteries, when the batteries of them were almost discharged.

Because of the high powerconsumption of the transmitters/receivers used inside of a tank, this happens sometimes, when the motor was not running. Batteries were sometimes too weak for starting the motor.To let the tankmotors running, the fuel consumption was high and also the noise of the motors. The generator was in that case, placed outside the tank and placed back in the turret, when not in use.. The generator did not make so much noise.

At the front was also a connection on it for direct feeding the radio’s in other situations.

ERZ side view

Here a side view of the generator.

ERZ side view 2

Another side view.

Erz handleiding

“Bedienungsanweisung” generator.

RPG4 tube-tester

RPG4 tube-Tester.

This german  tubetester is all original. It is a very handy tester for testing the tubes in my german radio’s. It is remarkeble, that even a lot of  american tubes can be tested. So a very useful tubetester.


Picture Above: RPG4 Front View.

In the lid, there is a cable, which you can connect to tubetester itselves. So alle the tube testscockets in the lid comes available.


Picture above: RPG4 inside look.

Right the rectifier tube, left the voltage stabiliser tube,