[Elecraft] K3 RF Feedback Problem

[Dean Straw]

Lyle: 

Is remove of L4 on the front panel board and L7 on the KIO3 audio board
"official" Elecraft modifications?

I'd hate to void my warranty by messing with something that isn't official.

Thanks, Dean Straw, N6BV



Lyle Johnson wrote:
> 
>> I bit the bullet and removed L4 and L7 this morning.  It is not 
>> difficult; they are both on the back of the front panel board.
> 
> L4 on the front panel board is related to the issues some folks are 
> having when using the front panel mic connector with various audio 
> routers.  It can be shorted with a jumper from pin 8 of the mic jack to 
> ground.
> 
> L7 on the KIO3 audio I/O board can also be bypassed for the same reasons 
> when using the rear panel mic jack in similar installations.
> 
> L7 on the front panel board is for reduction of noise from the RS232 
> serial port lines and should definitely not be bypassed!
> 
> 73,
> 
> Lyle KK7P
> 
> 
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