The Smiths wrote: > > Because the accuracy of the display readout when doing the "CENTER" > alignment is short by 2 digits, it causes the centering of the P3 to be > within only 100Hz of the actual center. It is imperative to the CW guys > that the extra 2 digits be displayed on the Top center read out. This > would allow us to both CENTER and REF CAL our WWV carrier right on Zero > Beat, and not just within 100Hz. Right now this is the most crippling blow > to the CW guys. >
You may not be doing Reference Calibration correctly if you are using the digital frequency readout on the P3. You don't need anything except the Spectrum display (step 5 below). From page 19 of the manual: Frequency Calibration Turn on the transceiver and P3 and allow them to warm up for 30 minutes, minimum, before performing the calibration. 1. If the transceiver has a calibration procedure to correct its frequency errors, perform that procedure first. 2. Using a well-calibrated signal generator or an on-the air carrier signal of known frequency, tune in the signal on the transceiver. An A.M. broadcast station can serve as a suitable test signal. 3. Adjust the transceiver frequency to the known frequency of the test signal. Depending upon the modulation mode of the transceiver, the signal may not be audible. 4. Set the P3 for minimum span and adjust the reference level and scale so you can easily see the signal. 5. Select MENU:Ref Cal, tap the SELECT knob, and adjust the frequency calibration until the carrier is centered horizontally on the display. If the required correction is more than a few kHz, it may be that the I.F. frequency is set incorrectly. That can be adjusted via MENU:Xcvr Def. The P3's Ref Cal steps in the menu are 10 Hz but that's close enough for accurately QSYing to even a 50 Hz bandwidth. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-a-modest-proposal-for-QSY-tp5410950p5413530.html Sent from the [K3] mailing list archive at Nabble.com. ______________________________________________________________ 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
