Well, here is my 2 cents. It may be a nuisance in general operating but its a must for weak signal microwaves as well as DXing. If its a problem for mixed mode, its because everyone has differnt radios or set ups are different. If everyone had CWU and USB or CWL and LSB then it would normally alway be ok.
A perfect example was yesterday afternoon. 6 Meters was open to the east coast to the Caribbean, but here in the midwest, the DX was coming in very weakly and had lots of QSB. I spent considerable time watching a station and calling him on SSB. Most guys were calling on SSB, a few were calling on CW. The ones calling on CW were not being responded to by the DX. Why you ask? Did the DX not want to work cw? Nope, all the CW was outside of the SSB passband. Easy to see on the SDR-1000 bandscope. It was obvious that the DX was not even hearing the CW. These were stations with rigs that did not have the CW freq offset function when switching between SSB to CW. i.e. you would have to retune in order to hear it. With no luck on SSB, I gave one call on CW. DXCC #77 on 6M! He came back to me on SSB without retuning to hear my signal. We worked cross mode with no effort. I just laughed when I saw other guys again calling on CW, just outside of the lower end of the SSB passband...I tuned away know that the funtion does what it is intended to do. A few other rigs do it correctly. Typically the Yaesus do just fine. The Icoms did not until the Pro II I believe, and then yet you had to set it up that way. They would have CW on the LSB side when you were on a band that utilized USB. Other examples from the microwaves and weak signal work, we would try to work on SSB and say the signals QSBed out. You knew the guy was there, so we typically switch to CW. The guys with yaesus driving their transverters or whatever would pop out right where you needed them to be without tuning. I can recall many times loosing guys who I knew were running Icom 706s, etc. The fact of retuning to find a weak signal was normally a loss of a possible contact. This is why I ran Yaesu radios for my VHF and microwaves IFs....er...uh.....until the SDR-1000 came along of course :) Again, my 2 cents. 73 Mike - KM0T ----- Original Message ----- From: "Bernhard Hailer, DL4MHK/AE6YN" <[EMAIL PROTECTED]> To: "FlexRadio" <FlexRadio@flex-radio.biz> Sent: Saturday, July 14, 2007 10:16 PM Subject: [Flexradio] Frequency for CW and SSB > Hello, > > question regarding PowerSDR: when you switch from USB to CWU, PowerSDR > adds > the side tone frequency to the currently used frequency; e.g. you operate > USB > at 21.4000 MHz and your side tone is 600 Hz, your new frequency is 21.4006 > once you switch to CW. > > This may be logical, but it is a nuisance if you operate mixed mode: I'm > practicing CW with some local hams here, and I have always to correct the > frequency when we have a final SSB chat after our practicing. > > Is there a purpose behind this scheme? Is it configurable anywhere? I > haven't > seen this with other radios... > > > Thanks! > Bernhard, AE6YN > _______________________________________________ FlexRadio mailing list FlexRadio@flex-radio.biz http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archive Link: http://www.mail-archive.com/flexradio%40flex-radio.biz/ FlexRadio Knowledge Base: http://kb.flex-radio.com/ FlexRadio Homepage: http://www.flex-radio.com/
