[Elecraft] P3 - spikes that never move

[John_N1JM]

If you are adventurous, you might take the cover off and make sure all screws
are tight, particularly those that need to make a good chasis ground
connection.

73, John N1JM


Bill Clarke wrote
> This morning I removed the entire shack from AC and left only the K3/P3 
> on battery and the antennas disconnected. No change on the screen. Bunch 
> of work for nothing and was exactly what I expected.
> 
> Of note: The ghosts vanish when the band is active - covered by the 
> ambient background noise level. During the day, when the band is "dead," 
> this is not the case and the spikes can be seen. Remember, I can not 
> tune to them as they remain in a static location on the scope. Signals 
> move through them as you tune.
> 
> Having used other forms of band-scopes over the years (including the 
> great SM-220) that only displayed what was actually RF on a band, I am 
> convinced this is something internally generated within the P3. If it 
> was outside of the P3, it would tune (move when the VFO is moved). 
> Perhaps the P3 is overkill and does, or is capable of, way more than 
> what a simple band-scope really needs to do. Such is the day and age of 
> microprocessors - simplicity has been left in the dust of bells and 
> whistles.
> 
> Rather than continue to worry about this, I am just going to accept it 
> as an anomaly of the P3. It really has no effect other than appearing as 
> signals that are not really there. Once you know what they are, you 
> won't bother trying to tune to them. Does this make it right for the 
> $$$? No, of course not, but it is the easy way out for an old guy that 
> only rag chews on 75 and 40.
> 
> Thanks for all the comments,
> 
> Bill W2BLC
> 
> 
> 
> 
> 
> 
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-----
73, John N1JM
K3 #5986
P3 #1752
KPA500 #596
KAT500 #575
KX3 #926
XG3
XG1
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