Maybe he's talking about a bit of DC bias, and kicking the diode into
oscillation. There were reports of that sort of thing happening when "crystal
radios" were still pretty important.

Now that you mention it, I believe that technique was used in some modern
device. Hmm... Possibly something in the UHF range...

Bill, K5BY

"WShoots1" wrote in message
...

Now that you mention it, I believe that technique was used in some
modern
device. Hmm... Possibly something in the UHF range...

Bill, K5BY

A tunnel diode? As I understand, that was supposed to be the "Next Big
Thing" around 1960. Didn't work out that way. But Heathkit did sell a
few "Tunnel Dipper" GDO type meters.

Frank Dresser

A tunnel diode?

That's it, Frank. Thanks.

Were they used in early TV UHF tuners?

Bill, K5BY

"WShoots1" wrote in message
...

Were they used in early TV UHF tuners?

Bill, K5BY

I don't think so. As I understand, they did work well at UHF
frequencies, but the circuits were very touchy to keep working. There
was alot of excitement for the tunnel diode in the old magazine articles
of around 1960, but it was quickly overshadowed by improved conventional
transistors.

Frank Dresser