[Boatanchors] WANTED: FT-243 Crystal for 7160 khz

[Dave Merrill]

Here"s one from Bliley:

http://www.bliley.net/XTAL/docs/ads/VF1_in_QST_Ad.jpg


On Tue, May 14, 2013 at 10:04 AM, Glen Zook <gzook at yahoo.com> wrote:

> There were a number of commercially available crystals that had a machine
> screw and a knob through the cover of the holder.  By varying the pressure
> on the crystal one could change the frequency.  Depending on the actual
> crystal, as much as 2 or 3 kHz (at the fundamental) could be covered.