I thought an oscilkator was one of those green lizards with lots of teeth that live in the swamp....
On Tue, Jul 23, 2019 at 4:25 PM Nr4c <[email protected]> wrote: > For CW, if radio is set to 7.040 then it will transmit a carrier on 7.040. > If you tune to a station transmitting on 7.030 then your radio should also > be at 7.039 and the P3 would show a spike on 7.030. The pitch of the audio > is done in the receiver so you can make out the code. Otherwise you wound > only hear “tch tch tccch” for a “U”. > > In the past an adjustable “BFO” or Beat Freeuency Oscilkator was used to > beat against the incoming carrier to provide an audio so that you could > hear the code. This was often needed due to you hardly ever worked someone > on same frequency as your crystal. Once you found someone coming back to > you, a turn of the BFO knob could provide a usable audio signal. > > The TX Sidetone is there for the same reason. > > > > Sent from my iPhone > ...nr4c. bill > > > > On Jul 23, 2019, at 2:31 PM, Kevin, N4TT <[email protected]> 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. > >> > >> > >> > >> Alan N1AL > >> > >> > >> On 2019-07-23 08:20, Bob McGraw K4TAX wrote: > > ______________________________________________________________ > 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] -- -+-+-+-+- Jenny Everywhere's Infinite: Quark Time http://quarktime.net ______________________________________________________________ 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]
