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 WW2 Japanese HF comms receiver
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 Return to top of page · Post #: 1 · Written at 12:32:07 PM on 14 April 2017.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 340

If remember reading an article in a WW2 era Radio and Hobbies about a captured Japanese comms receiver.

The writer had examined the radio in detail and was in shock about the ingenuity of the design, the high standard of construction and the excellent performance of the radio. Something like "If the Japs can do this we have something to worry about"! Common wisdom at the time was the "Japs" could only make inferior copies of things.

One of the design aspects that interested me at the time was the radio used only what appeared to be 6F7 triode-pentodes in all positions. I guess this would have helped with spare parts inventory, reduced the valve count and made the radio more compact.

Anyone know anything about this radio? Maybe even have one?

Also, when I was in high school in the 1960s, a friend had a very compact WW2 Japanese transceiver that used only a single battery twin triode (it looked like a 19, it had a 6 pin UX base). His dad, who was in Signals, had picked the radio up in PNG during WW2, it had apparently been embedded in mud but when I saw it, it looked clean and intact - the valve was still under vacuum.

Thinking about it now and remembering the coil design, it was probably a VHF super-regen, intended for short range "walkie-talkie" applications. We tried to get it running but the two potted transformers(?) appeared to be O/C on all windings. Pity. Again, a beautifully made device.

Anyone ever seen one of these?


 
 Return to top of page · Post #: 2 · Written at 10:45:03 AM on 29 April 2017.
Audion's Gravatar
 Location: Perth, WA
 Member since 4 February 2014
 Member #: 1496
 Postcount: 19

I had and old Japenese receiver a while back that used 3 x 6D6's, beautifully made with 3 dials on the front which made it look like some 1920's set, even had military anchor stamps on valve with Japenese writing ! ( these were a cloning oddity and curiosity on their own )
No one was quite sure about it as it looked 20's but had 6D6's ?
I probably had photos, but they would be gone.
It ended up going back to Japenese museum, to go with the sister transmitter. I guess it was the best place for it to go as they
couldn't find one either.
I got it from some one in WA, and where they got it from I don't know.

Good luck with search

Ray


 
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