A signal near the I.F. that is picked up by the P3 or P3 cable will not move as you tune.
Other signals appear to move only because their frequency relative to the I.F. center frequency changes as you change the frequency of the K3's VFO. I'm not saying that the artifacts cannot be internal to the P3. Only that a fixed frequency signal near the K3's I.F. will remain in a fixed position on the P3 display as you tune the K3, whether it is internal or external to the P3. 73 Ron AC7AC -----Original Message----- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Clarke Sent: Thursday, February 28, 2013 4:13 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 - spikes that never move 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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
