Hi All,

For what it is worth the IC7800 does not have the switching problem
Even when it is controlled only by the IC7800, this is confirmed by 
Larry K8UT

Guy ON4AOI 

> -----Oorspronkelijk bericht-----
> Van: dx4win-boun...@mailman.qth.net [mailto:dx4win-
> boun...@mailman.qth.net] Namens ON4AOI
> Verzonden: zondag 13 februari 2011 18:13
> Aan: dx4win@mailman.qth.net
> Onderwerp: [Dx4win] ICOM 7600-7700-7800 and there so called VFO-B SPLIT
> function
> 
> 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
> 
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