[Amps] ALPHA 77Sx Bandswitch

ka1xo at juno.com ka1xo at juno.com
Sun Apr 25 19:44:26 EDT 2004


Gents,

In reassembling the 'Sx and looking closely at the bandswitch, it is seen that the schematic diagram published in 1980 doesn't match the wired configuration. The added padding cap lead for the 80/75 meter
band position is attached to wafer S-3-B, and the 160m padder strap is
matching the schematic on its home on S-3-A, but what is shown as a blank position on S-3-A, to the immediate right of the wiper contact as seen from the back, is jumpered to another leaf (stator) position and then on to one of the toroid coils.

Secondly, it is noticed that there are two detents for every band position on the bandswitch dial position. I don't remember there being an issue with my first 'Sx, but wonder if any of you have knowledge of these occurences, please?

Hal Mandel
KA1XO


More information about the Amps mailing list