Mike,
The only 2 things in the receive path that differ substantially from
band to band is the Low Pass Filter and the Bandpass Filter. Unless the
"component" you refer to is a part of those filters, it is unlikely to
be a component problem.
It would seem that you have a problem with one or the other. Further
testing with an RF Probe or an oscilloscope and a strong signal
generator may reveal which one. The XG3 may have enough output for
investigation with a 'scope, but I doubt it is strong enough to use an
RF Probe.
Yes, you may wish to take the easy path and have Elecraft check and
align it - contact
[hidden email] if you wish to start that process.
73,
Don W3FPR
On 9/11/2014 1:37 PM, Mike Sullivan wrote:
> I got one response from Don W3FPR who indicated I should try S-Meter Config MD: to ABS "which causes the S-Meter reading to stay fairly constant but require SMTR OF and SC to be re-aligned" and to "find a happy medium for the setting".
>
> The K3 internal Tuner was bypassed.
>
> I did that and have prepared the following table of observed S meter values (utilizing the XG3):
>
>
> Band -73 dBm -33 dBm
> 160 S9 S40
> 80 S9 S40
> 40 S9 S45
> 30 S9 S40
> 20 S4 S10
> 17 S9 S40
> 15 S9 S40
> 12 S9 S40
> 10 S9 S40
>
> I did double check the XG3 with the Rigol Spectrum Analyzer and it was dead on.
>
> The obvious question is why is the 20 meter results so different from the other bands? I am enough of a purist to send the K3 back for a re-alignment, but could an incorrect component been assembled on the receiver board?
>
>
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