[Elecraft] Tx distortion

[Bob McGraw K4TAX]

Don't forget about the length of the ground conductor as well. I've seen 
and found more than one instance where the ground conductor was a 1/4 
wavelength on the band which caused RFI in the station.   That puts the 
station at 1/4 wave or a maximum voltage point above ground.  It was 
acting like a receiving antenna in the presence of the transmitted 
RF.    For that reason, I do not use an external ground on my station 
equipment.  It is not needed.

73

Bob, K4TAX


On 2/2/2019 7:32 PM, Jim KO5V wrote:
> Yeah, that's why I mentioned the length. It was an early "teaching moment" in my ham radio career. Surprisingly, it only took me a few minutes to figure out what I had done, but I had to move the power supply and workbench, and coil up the 706's power cord. I didn't like the new, new shack layout as much as the old new one, though. It also proved to me that some chaos is OK - being too neat has always bitten me somehow!
>
> 73, Jim KO5V
>
>
> "10' is almost exactly a half-wave on 6 meters.  Your power cord was a
> "worst case" for RF feedback on six.
>
> 73,
>
>     ... Joe, W4TV"
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