Operating split without using SPLIT
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Operating split without using SPLIT
 
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After a bit of experimenting, I am finding I prefer a way of operating split
that doesn't require the SPLIT button at all. This is to transmit on VFO A and listen to the DX station on the subreceiver. You find the DX using VFO A, hit A>B, hit SUB and look for the pileup with VFO A. You never have to press SPLIT or turn the VFO B knob, and you never have to stop to think which frequency you will be transmitting on - it's always the frequency in the VFO A display regardless of whether you are operating split or not. Assuming you are quick enough to realize that the DX is operating split in the first place, about the only other mistake you can make is to forget to hit SUB, which becomes obvious very quickly. If you are using a panadapter like LP-PAN with PowerSDR, you can click on the pileup in the panadapter display to tune VFO A directly to the pileup. The focus of the panadapter is always on the pileup, not on the DX station as it would be when using SPLIT. You can even use text decode or the auxiliary display in the VFO B window - all it costs you is the display of the DX station's frequency; you never lose sight of your transmit frequency. This all seems too easy - what am I missing? 73, Rich VE3KI K3 #1595 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Operating split without using SPLIT
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Richard,
That is doing it 'the old way', just like having separate transmitter and receiver, only better. I would say the only thing you are missing is the ability to do diversity receive when in that configuration. 73, Don W3FPR Richard Ferch wrote: > After a bit of experimenting, I am finding I prefer a way of operating split > that doesn't require the SPLIT button at all. This is to transmit on VFO A > and listen to the DX station on the subreceiver. > > You find the DX using VFO A, hit A>B, hit SUB and look for the pileup with > VFO A. You never have to press SPLIT or turn the VFO B knob, and you never > have to stop to think which frequency you will be transmitting on - it's > always the frequency in the VFO A display regardless of whether you are > operating split or not. > > Assuming you are quick enough to realize that the DX is operating split in > the first place, about the only other mistake you can make is to forget to > hit SUB, which becomes obvious very quickly. > > If you are using a panadapter like LP-PAN with PowerSDR, you can click on > the pileup in the panadapter display to tune VFO A directly to the pileup. > The focus of the panadapter is always on the pileup, not on the DX station > as it would be when using SPLIT. > > You can even use text decode or the auxiliary display in the VFO B window - > all it costs you is the display of the DX station's frequency; you never > lose sight of your transmit frequency. > > This all seems too easy - what am I missing? > > 73, > Rich VE3KI > K3 #1595 > > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Operating split without using SPLIT
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One other thing you might lose is the ability to get the DX station back into both ears with one button-push (SUB), which might be useful if he's weak (like T27A was on my off-band dipole last night). Maybe I'm alone in finding that I can hear the weak ones better when I have them in both ears... ~Iain / N6ML Don Wilhelm wrote: > Richard, > > That is doing it 'the old way', just like having separate transmitter > and receiver, only better. > I would say the only thing you are missing is the ability to do > diversity receive when in that configuration. > > 73, > Don W3FPR > > Richard Ferch wrote: >> After a bit of experimenting, I am finding I prefer a way of operating split >> that doesn't require the SPLIT button at all. This is to transmit on VFO A >> and listen to the DX station on the subreceiver. >> >> You find the DX using VFO A, hit A>B, hit SUB and look for the pileup with >> VFO A. You never have to press SPLIT or turn the VFO B knob, and you never >> have to stop to think which frequency you will be transmitting on - it's >> always the frequency in the VFO A display regardless of whether you are >> operating split or not. >> >> Assuming you are quick enough to realize that the DX is operating split in >> the first place, about the only other mistake you can make is to forget to >> hit SUB, which becomes obvious very quickly. >> >> If you are using a panadapter like LP-PAN with PowerSDR, you can click on >> the pileup in the panadapter display to tune VFO A directly to the pileup. >> The focus of the panadapter is always on the pileup, not on the DX station >> as it would be when using SPLIT. >> >> You can even use text decode or the auxiliary display in the VFO B window - >> all it costs you is the display of the DX station's frequency; you never >> lose sight of your transmit frequency. >> >> This all seems too easy - what am I missing? >> >> 73, >> Rich VE3KI >> K3 #1595 >> >> > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Re: Operating split without using SPLIT
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In reply to this post by Richard Ferch
N6ML pointed out:
> One other thing you might lose is the ability to get the DX station back > into both ears with one button-push (SUB), which might be useful if he's > weak (like T27A was on my off-band dipole last night). Maybe I'm alone > in finding that I can hear the weak ones better when I have them in both > ears... True - and with a weak signal you might also want to eliminate the 3dB passive splitter loss while listening to him. With the dual-RX technique (which I think is basically similar to what Icom calls "dual watch"), to get the DX in both ears takes some extra juggling (you have to hit A/B as well as SUB). So it would be wise not to forget how to operate in SPLIT mode just because you have a second receiver - with a weak DX station you might still need to operate using SPLIT. One correspondent also pointed out that I missed the worst possible mistake you might make while using dual-RX instead of split, namely to forget that you weren't using split and hold the SPLIT button - that would leave you transmitting on top of the DX! The dual-RX technique also assumes you have adequate roofing filters in both receivers - with this technique the filtering requirements for the subreceiver might even be more stringent than for the main receiver, since you really want to be able to copy the DX well, but you can get away with extra QRM listening to the pileup - all you need to be able to do is identify where the station being answered is, which doesn't require the same level of copy. One thing that might be worth trying in the receiver that's listening to the DX (regardless of whether it's VFO A or VFO B) is the DUAL PB filter with the context width cranked down to 400 Hz. The filter shape with this configuration is different from the standard 400 Hz DSP filter. The standard 400 Hz filter has a relatively square passband profile, whereas the DUAL PB filter has more of a cosine shape, i.e. it's more peaked on the desired signal, which may help the signal stand out from the QRM a bit better. 73, Rich VE3KI K3 #1595 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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