Military Wireless in the Midlands Museum
The Japanese Section rs


A rather special Japanese set, a Walkie Talkie resembling the US BC-611 somewhat but operating on higher frequencies.

A Japanese VHF set, I still need to find out more info on this set though.

A 94 Type 3 Special Receiver, in quite good condition so hope to have it working soon.

Type 53C receiver, in its box, with coil packs and spare tubes.
type53c type53

Tobi Aircraft receiver and transmitter Mk5. tobirec tobitx
Receiver
internal
Fig 1
Receiver
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Fig 2
Transmitter
uinternal
Fig 3
Transmitter
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Fig 4

The Tobi pair, cleaned up and nearly ready to go..
tobi
Recent addition. Type 66 HF transceiver. 3 Valve hf set, apparently quite rare. I have started restoration, this involves basically a paint touch up, reglazing of the two meters and finding a couple of knobs.
type66a type66b

After a bit of a clean up and tlc...
restore66
Another recent addition: TM Handy Set, Japanese Navy. 2 valve, 4-12 Mhx, 2.5W CW... more later
tmnavy

Receiver Type 94 -2 Mk 2. Ground to Air communication. After a clean it looks really good, even better when I found it still worked. Just one broken wire on the bfo switch. A previous owner had removed the rotary ht generator and built a mains (115v) psu in its place. I have now removed this and replaced it with a 6v inverter supply, the set is now operational again.

jap942

Now, an Army Model 99 "Tobi" Mark 3 Radio Set. Obviously from a crash wreck. So, do I restore or leave as is. Thats the question. ed: Have decided to restore, pics later.
zero
Now after some restoration work the set is starting to look a little better.
zero1

Amazingly, I found another, complete set.


Model 97 Easy to use Wireless Telephone, Product No 181-2 Navy Logo, Made in June 1943, Sendai ( city in Japan) by Nichiden Radio Manufacturing Company Ltd.
jap181a
If anyone has further info on this set I would be most interested.
jap181b jap181d jap181c
This super little combo is a receiver transmitter, Model 94 Mk 5, hf, qrp, and still going strong..
jap1
close ups of the two units now.. tx first
jap3
then receiver unit ..
jap4
A very small VHF set, Model 94 Mk 6, man pack, single valve rx/tx ..This is the later 3 band version
jap5
The earlier single band version..
946mk1
Side view of the VHF set, showing the small Morse key built ito the side of the case. jap7
The mule carried field set, Model 94 Mk 3, houses a single valve transmitter and a s/het receiver. The batteries for rx htr and ht and tx htr are carried in the compartment at the base, the tx ht was provided by a handcranked generator.
jap6
The Japanese version of the HRO, using a similar system of plug in coil units and external power supply. The set uses 9 valves in a single conversion role but with an added feature of the user being able to select between two IF ranges, depending upon the band in use, by using plug in IFT units.
japhro
Another receiver, Mark 41 Type D receiver part of the Model 94 Mk 3C station, awaiting restoration, plug in coil pack again..
jap8
Newest item in the collection, Japanese Field telephone, dated Feb 1943
jt6
A small Naval test set, crystal calibrator with modulated output. The xtal inserts behind the central door and is powered from an external supply (battery ?). I believe the unit was used for Naval Aircraft radio alignment. Also, a nice little Japanese Test Meter, still working.
japxtal jmeter
A Morse Code unit, not sure if its a practice oscillator or a line sending device, more later.
Morse unit

Fig 1
Morse unit
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An interesting item found at the back of a junk shop in Cornwall. Apparently, it's an Army Gunnery calculator, Plotting fall of shot and the like. The characters are to do with degrees, angles etc. So, if anyone knows where I can get a Japanese artillery piece?
( Click on small images for a larger version)
jcal1
jcale
japhead japhead2

Domo Arigato, Konichiwa...............

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