[Elecraft] 160 M Harmonic Problem with K2/100 Driving TenTec Titan

[Stewart Baker]

> The K2 has a pin 1 problem at the mic connector and the headphone connector --
> neither of those connector shells touch the chassis if built according to
> instructions.  I
> suspect that there is also a pin 1 problem at the RS232 connector, but
> haven't looked at
> that yet. I've fixed the pin 1 problem at the mic connector.

>> Hi Jim,
>> I am interested in how you fixed the "pin1" problem on the K2 mic connector.
>> The only mod that  I am aware of to addresses this is connecting the socket 
>> shell to the Front panel board earth plane. As you comment this can cause
>> an interference voltage to be developed across the board circuitry.

>> 73
>> Stewart G3RXQ

> BTW -- lots of ham gear has pin 1 problems, including all the TenTec gear
> I've looked
> at.
> Thanks to those who have responded re: instability in the K2/100 power amp
> stage. All
> ideas are appreciated.
>
> Jim Brown  K9YC
>
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