So now I am getting a much better understanding... What Joe W4TV is saying is that a P3 is "never more than 50 cycles" from the K3 frequency readout when correctly calibrated. With a 100 cycle bandwidth, this is somewhat acceptable.
However, on a Flex, I can click on a signal and be DEAD ON the signal I have selected. I have never operated a LP-Pan, but can I assume that it will function just like the Flex (it is the same software front end after all)? And Skimmer's waterfall display is also just as accurate. This means that if I am a "shoot fish in a barrel" mult operator and are combing the band for signals, I would be much more efficient time wise using a Flex/LP-Pan or a Skimmer than using a P3 on my K3, even with the Macro Magic CWT solution, right? The upside is that no computer is needed (which is a non trivial thing, IMO). Will/can the P3/K3 combination approach the accuracy of the above systems? -lu-w4lt- Date: Thu, 12 Aug 2010 02:58:27 -0400 From: "Joe Subich, W4TV" <[email protected]> Subject: Re: [Elecraft] P3: a modest proposal for QSY To: [email protected] Message-ID: <[email protected]> Content-Type: text/plain; charset=ISO-8859-1; format=flowed > You're wrong Brett... No matter what you say the P3 doesn't > automatically sync with the K3 to a 1Hz accuracy. The Center line > on the P3 CAN be and usually is off by as much as 99Hz. You're wrong. The P3 display will never be more than 50 Hz from the K3 if you calibrate it properly. Hold "center" until the "Center Frequency" adjust display comes on and then hold "Center" again. The P3 center frequency will be calibrated to the K3 frequency ... the display will change +/- 50 Hz (e.g. it will show 10.000.0 from 9.999.950 to 10.000.049). > Look, try this.. it's a very simple test. Take your rig, put it on > 10.000.000 Now look at your P3, does it say 10.000.0. Let's say > that it does (according to you it should), now, turn your VFO knob > up until the P3 reads 10.000.1. Where is your K3 displaying? I'm > sure it's not going to be 10.000.100. No, the P3 display will change to 10.000.1 at 10.000.050 as I just explained above. The P3 shows the correctly rounded version (not truncated) of the K3 frequency. If you want the P3 center frequency to align with the K3 simply do the "Center" "Center" process as documented in the manual. > You just can't set the Ref-cal until you know the center has been > set correctly. If you do, than you're going to have EVERYTHING out > of wack by that much difference. Moving that Ref cal just confuses > things more. If you properly zero the "Center" as instructed in the manual and use WWV or an AM broadcast signal with SPAN set to 2 KHz, you will get REF-CAL set to well less than 0.1 Hz ... probably on the order of 0.01 Hz. It's not rocket science ... just follow the instructions from those who designed the product and stop trying to argue. 73, ... Joe, W4TV ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
