[AMRadio] DX-100B, output falls off gradually

[Rick Poole]

At 10:24 PM 11/19/2011, Gary Schafer wrote:

 >>>>>
>Also check to see if you have the mode switch in AM or CW.
>Only in the AM position does the plate switch ground/open the cathode
>circuits. In the CW position the cathodes are connected directly to the CW
>key jack which has shorting contacts when the key is unplugged.
>
>So if you have the mode switch in CW and the key unplugged, then the
>cathodes of the VFO and buffer are always grounded.
<<<<<

Right, I saw that in the schematic.  Pin 1 of the accessory socket is 
always grounded regardless of the position of the Phone/CW switch.

Rick WA1RKT