Absolutely not!!! The software must never switch active VFO's as it could be disastrous with amplifiers, tuners and antenna switches monitoring the CI-V bus especially if the second VFO is on a separate band.
It possibly might work with Main/Sub radios such as IC910, IC775, IC7800, IC7600 etc. I'm not sure if switching to the sub reciever actually shifts the "active" VFO. On 2011-02-13 12:22, Dick Flanagan wrote: > It is possible to read the second VFO "on demand" > instead of only when polling? I think it would > be safe to bounce the VFOs like you are doing at > the point of writing a log entry and when > processing an ALT-A command. At least I would like to try such a system. > > Dick > > At 09:13 AM 2/13/2011, ON4AOI wrote: > >Hi All with Icom tranceivers, > > > >With ICOM announcing that the split status can be read from some of their > >radios, > >we had hope that support for obtaining the split frequency was finally > >possible in DX4WIN. > >The way we tried to read the VFO-B frequency is not working as we hoped and > >SHOULD NOT BE USED. I have asked Jim to remove the rig files for the IC7600 > >and IC7700. > > > >Here my comments about the new firmware where it all should have been fixed > >and working now!!!!!!!!!!! > > > >This is not TRUE and probably never will be > >UNLESS WE STOP TO BUY THERE TRANCEIVERS. > >MAYBE THEN THEY WILL LISTEN TO RADIOAMATEURS. > > > >WHY? > > > >This is an email (answer) I got in 2009 when I had talked to a Staff member > >of ICOM in Friedrichshafen. > >I left out the name of the sender because it was forwarded. > > > > >**************************************************************************** > >********* > >Dear Mr. Guy, > > > >I’ve just got an answer regarding "readout of the VFO B via PC / CI-V" . > > > >Unfortunately, it’s a negative response. > >For reasons of compatibility with other devices without a second VFO, ICOM > >Inc did not (and will not) include this function. > >We are sorry, but we cannot give you any other information. > > > > >**************************************************************************** > >******** > > > >This is crap , because older transceivers can´t be updated via software > >new transceivers should not have this possibility? > >It's like driving a Ferrari with bicycle wheels. > > > >B4 the latest firmware you could only SET SPLIT ON/OFF, > >now you can also READ if SPLIT is ON/OFF. > >There is still NO READ VFO-B or should I say SUB VFO in ICOM language. > > > >How Paul implemented it in DX4WIN is in short like this > >Check split status > >Change to SUB-VFO (in our terms VFO-B) > >Read the freq and mode of SUB-VFO > >Change to MAIN-VFO (in our terms VFO-A) > >Read the freq and mode of MAIN-VFO > >Set SPLIT ON/OFF if needed > > > >This is the reason why you see the switching between MAIN/SUB > > > >Is it safe? > >I tested this out for many hours on my IC-7800 and had no problems even > with > >dualwatch, > >but I have a second receiver in the radio and that is a big difference > >compared > >to the IC7600 and IC7700. My polling rate is at 2500 or even higher so the > >switching is not that often. > >Also because my antennas and other stuff are controlled from a station > >master where I can select the frequency he needs to use > >For switching between my antennas. > >I thought it was SAFE................................. > > > >But Friday night Dick,K7VC send me an email about the tests he did with his > >IC7700 and the new (v2 not available) rigfile. > >Freq and mode are readout ok for both Main and Sub VFO BUT He was testing > >with following settings > >(probably for the wpx-rtty contest SO2R) > >MAIN VFO 14090 FSK > >SUB VFO 28090 FSK > > > >With short pollings he had strange effects in TX with his tuner because > the > >radio > >was going shortly from 20m fsk to 10m fsk. > >I never tried this since I had it running only in same band. > > > >SO IT IS NOT SAFE AND THIS IS THE REASON WHY I ASKED JIM TO WITHDRAW THE > >RIGFILES FOR DOWNLOAD BECAUSE YOU CAN IMAGINE > >WHAT COULD HAPPEN IF THERE IS AN AMPLIFIER CONNECTED AND YOU ARE RUNNING ON > >DIFFERENT BANDS. > > > >I will check with Paul if it can be solved but I guess NOT > >The following command 1C0200FD or 1C0201FD could maybe help but never got > >any reaction from the transceiver when I tried out. > >Cmd 1C, Sub Cmd 02, Data 00,01 ===> Send Read transmit frequency monitor > >setting, (00=OFF, 01=ON) > > > >In worst case the support for SPLIT will be removed for ICOM radios until > >they come with a descent command for VFO-B > > > >There are other programs I tested out and they are acting the same or have > >other effects. > > > > > >The RS-BA1 that I own also does not do what we hoped for, > >It only read onetime but when retuning the sub-vfo you have > >to manually switch between Main and Sub to get it on screen. > > > > > >Guy ON4AOI > > > >______________________________________________________________ > >Dx4win mailing list > >Home: http://mailman.qth.net/mailman/listinfo/dx4win > >Help: http://mailman.qth.net/mmfaq.htm > >Post: mailto:Dx4win@mailman.qth.net > > > >This list hosted by: http://www.qsl.net > >Please help support this email list: http://www.qsl.net/donate.html > -- > Dick Flanagan K7VC > d...@k7vc.com > > ______________________________________________________________ > Dx4win mailing list > Home: http://mailman.qth.net/mailman/listinfo/dx4win > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Dx4win@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > ______________________________________________________________ Dx4win mailing list Home: http://mailman.qth.net/mailman/listinfo/dx4win Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Dx4win@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
