Bob,
Looks like a Dave Schmarder design using the 1625. I've built one. Not very
selective around these parts, get's hammered by my locals, but it works. 12
VDC is all that is needed:
http://www.schmarder.com/radios/crystal/63.htm
73 Gil NN4CW
On 1/28/08, Bob Foxworth [EMAIL PROTECTED] wrote:
Check out eBay item: 330207789574
Gorgeous.
73,
-Bruce Bacon N7BWB
Boise County, ID
Interesting. This device needs 12 volts but has a tube which
looks like an old 807 (but I think the 807 had 5 pins,
and this has what looks like 7 pins so it may be a 1625).
There is no power componentry for such a tube (it needs
around 400 volts for the plate) so that's likely decorative,
or maybe some of the hardware is not shown?
The detail on the photo is not good enough for me to
tell if the plate cap lead actually goes anywhere.
Or maybe the tube envelope was opened up and a small
transistor preamp was mounted inside the tube envelope.
That would be hard to do. Or, maybe in the tube base.
That might be doable. Then that makes it just misleading.
The tickler coil appears fixed-wound on the coil form. A
regen should have a way to adjust the tickler coupling.
A mystery to me.
- Bob
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