Thought I should mention: This QTH is extremely quiet. The typical
daytime background for 75 meters does not even move the S-meter. Of
course I base on daytime conditions, as they are all local and not
propagated in.
This is a very quiet QTH - however, with the antenna disconnected:
The spikes I see on 75 meters are S3 (below the operating frequency) and
show up on the waterfall as well. I also have a wide peak (20 kcs
approx.) which is above the operating frequency with a strength of S5
and is also on the waterfall. I get a similar display on 40 and 20
meters. Mode makes no difference.
As the antenna is disconnected and I am seeing this on the display - I
can only assume it is internally generated. Note that the spikes are not
tunable.
Bill W2BLC
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