K2: Is it a bad idea to leave the T2-to-Freq-counter cable hooked up?

[dw-4]

Hey gang, on the K2,
Is it bad for the unit to leave the Cal-Filter cable connected to T2 and
Freq-in?

I'm finding myself wanting to experiment with more filter bandwidth
settings these days.

Thanks
Duane
N1BBR
--
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[Vic K2VCO]

dw wrote:
> Hey gang, on the K2,
> Is it bad for the unit to leave the Cal-Filter cable connected to T2 and
> Freq-in?
>
> I'm finding myself wanting to experiment with more filter bandwidth
> settings these days.

When the cable is connected there is a slight increase in at least one transmitted spur;
the third harmonic of the BFO appears above the top of the 20-meter band. If you are
running high power it's considered a good idea to disconnect it. In QRP configuration it's
less important.

--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
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[Don Wilhelm-4]

Duane,

Since you have a K2/100, the answer is "yes, that is a bad idea" - the
BFO output can couple to the KPA100 and introduce spurious output.
In the QRP K2 it is normally OK to leave the probe connected, but
removal is still recommended.

73,
Don W3FPR

dw wrote:

> Hey gang, on the K2,
> Is it bad for the unit to leave the Cal-Filter cable connected to T2 and
> Freq-in?
>
> I'm finding myself wanting to experiment with more filter bandwidth
> settings these days.
>
> Thanks
> Duane
> N1BBR
>  
>  

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