[Elecraft] Leaving TP2 connected?

[Don Wilhelm]

John,

That presents no problem at all.  The base K2 manual suggests that you 
leave the probe in TP2 to allow you to adjust the filters at will, but 
it also exposes the RF circuits to 3rd harmonic leakage from the BFO.  
With the K2/10 that does not normally produce spurious responses that 
are objectionable,  But if the KPA100 or an external amplifier is added, 
they can be stronger than allowable by the FCC.

My recommendation is to not leave the probe connected to either TP2 or 
TP1.  It can remain connected to the control board as long as the tip 
does not flop around and cause problems.  Securing the tip as suggested 
by N0SS (SK) is a good addition.

73,
Don W3FPR

On 4/16/2013 11:39 AM, John Wingard wrote:
> The counter probe is inside my k2/100 but not connected to TP2. However,
>   it is still plugged into the control board. It's just parked along the
> left side panel and grounded in a dummy jack in the back corner of the
>   rig (as per on old tip by Tom, N0SS). Is there a chance of creating problems if left this way? I left it
>   in primarily to keep from misplacing it when needed.
>