Hi Don: I'm still checking things out but I think I have it all working together. I calibrated the radio using WWV at 5, 10 and 15 MHz. I only had to line up one and the other two fell right in. Then I went to the P3 and lined that up with ref cal. Again, everything lined up at 5, 10 and 15.
Then I want back to fldigi which is where I originally noticed the difference. I have the radio and fldigi set for a CW sidetone of 600 Hz. When I would tune in the radio for the 600 Hz tone on a random CW signal, the peak of the P3 trace was right over the signal and Fldigi showed the signal up at 600 Hz. Everything matched. This is what I was looking for, the three functions matching. I think I'm in good shape. Kev On Thu, Jul 25, 2019 at 11:00 AM Don Wilhelm <[email protected]> wrote: > Kev, > > I believe that Alan's response, while correct is a bit confusing. > In CW mode, a signal at 7.035,000 kHz should be shown at 7.035,000 MHz. > OTOH, an SSB signal with a suppressed carrier frequency of 7.135,000 MHz > will show the suppressed carrier frequency as the center, but the > intelligence of the sidebands will appear above or below the center > frequency (depends on USB or LSB). Data modes will be similar to SSB. > > I am not certain why Alan prefers using a BCB signal, but WWV is an AM > signal with defined frequency and tone frequencies. IMHO, it is better > than a broadcast signal for calibration and assessment purposes if used > in SSB mode. In CW mode, where the carrier frequency is important, > Alan's choice may be good. > > 73, > Don W3FPR > > On 7/23/2019 2:31 PM, Kevin, N4TT wrote: > > Maybe that's the basic question... > > > > If I tune the radio to 7.035 to set a CW signal for a pitch of 600 Hz (as > > set using the PITCH function) what should I expect to see on the P3? > > > > 1) The P3 shows 7.035 and the CW signal is offset from the center by 600 > Hz? > > > > 2) The P3 shows 7.035 and compensates for the pitch placing the CW signal > > directly under the cursor? > > > > 3) The P3 shows 7.035600 placing the CW signal directly under the cursor? > > > > I expect #2. > > > > I'll be trying out more this evening. > > > > Kev > > > > On Tue, Jul 23, 2019 at 12:47 PM Alan Bloom <[email protected]> wrote: > > > >> Good advice. > >> > >> > >> Also be aware that the center frequency differs depending on mode. For > >> example, it is the supressed carrier frequency on SSB but is offset by > >> typically 600 Hz on CW. > >> > >> > >> I like to use AM mode for frequeny calibration. After doing a frequency > >> calibration on the K3, tune to a signal on the AM broadcast band and > adjust > >> the P3 frequency calibration. (MENU:RefCal. Cal procedurre is on page > 39 > >> of the manual) As I recall, AM broadcast stations are required to be > >> within 20 Hz of nominal frequency but are typically much closer than > that. > ______________________________________________________________ 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 Message delivered to [email protected]
