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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: 301

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?

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