On Apr 23, 5:21*pm, Bill M wrote:
Unca Pete wrote:
"raypsi" wrote in message
....
On Apr 22, 9:18 pm, "Unca Pete" wrote:

For an education:

http://www.bentongue.com/xtalset/xtalset.html

Hey OM:

That's a nice link. But nowhere could I find a diode double, tripler,
or quadrupler detector.

73 OM

Probably because they don't deliver any benefits?

Basically true but in fairness to the folks who have never tried it you
MAY get some additional volume on a reasonably strong local station.
You shoot your selectivity and ultimate sensitivity in the foot, though,
because of the extra loading on the tank. ie, not a DX set.

There's one circuit floating around that uses a dual center-tapped tank
(so to speak) *with a diode on each side and their outputs are combined..
* * One fellow said it worked pretty well as a workaround for the
loading concern. * Still not a DXers set but better than attempting a
voltage doubling detector.

-Bill

Bill.
I built one of those several years ago. Plans came from a CQ magazine
article some years before. I couldn't get it to work very well back
then. couldn't get both circuits to tune to the same frequency, even
though it was built symetrically. A week ago, I brought it into the
shack from the shop and tried it again, using my 160 meter lazy quad
antenna. Still couldn't figure any way to get both sides to tune and
track together.

Looks nice and someone may have gotten it to work, but for now, it's
going back to the top shelf in the shop.

Paul, KD7HB