[Boatanchors] Question about AC-1

[L L bahr]

6AG7 tube

Lee

I tried it with a real FT-243 crystal and it chirped like crazy on 20 meters. The crystal was cut for 20 meters. I found 30 meters to be the highest it would produce a decently chirp less signal.  You might try doubling the crystal frequency, but then, your output would be reduced.  A FT-243 crystal is really thin if cut to 20 meters and when using a 6V6 oscillator, the current could easily fracture the crystal.  You could cheat and change the 6V6 to a 6AG& and things would be much better.  However, the tube base would have to be rewired and 6AG7 tubes only come with metal shells.

Lee, w0vt

----- Original Message -----
From: "John N. Ritter" <jnr at nwlink.com>
To: Boatanchors at puck.nether.net
Sent: Monday, February 24, 2014 5:31:02 PM
Subject: [Boatanchors] Question about AC-1

Has anyone ever put an Ameco AC-1 on 20 or 15?

Thanks,

John

K7VGF

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