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Poor Man's SO2R ?

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Craig Smith

Poor Man's SO2R ?

Was doing some thinking during the NAQP CW contest this weekend - dangerous,
I know. I'd like to dabble with SO2R "extra lite", just to pick up an
additional mult from time-to-time. Don't really want to get into the
complexity and expense of SO2R software, interconnections and 2nd
transceiver.

What I had in mind was to monitor the second band with a separate receiver
and antenna - maybe an SDR - with just an earbud stuffed into one ear. For
example, when running on 20 with the K3, I could be searching 15 for missing
mults while the CQ is in process. If I find one, it would be really slick
if I could dial in the frequency on the K3 VFO B. Then at the opportune
time, switch the K3 to 15, press A/B and give him a call. Two button
presses. Only one to go back to my 20 meter frequency. (when contesting I
have the unused bands mapped out). The logging software should track this
w/o any difficulty.

I understand the limitation of the K3 of receiving on two different bands
due to the lowpass filtering, but I'm not asking for that. Just would like
a way to set the VFO B in advance so that it is ready to go when I do the
band switch, saving lots of time.

I admit to no knowledge of SO2R, so I could be all wet. I also could be
opening up a can of worms and/or Pandora's box. But I do know that there
are several very experienced people on this list about both SO2R and the K3
design, and would be interested in their feedback.

73
.... Craig AC0DS

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Brett Howard

Re: Poor Man's SO2R ?

I think you'd be happy w/ the SubRX. If you're listening on a higher
band you can just tell it you're doing split and use VFB B as your TX
and then listen to the higher band on A. If you're just running a CQ
you may as well run it on B so that as you're scanning you get to use
the big knob for your searching.

~Brett

On Sun, 2009-08-02 at 19:19 -0600, Craig D. Smith wrote:

> Was doing some thinking during the NAQP CW contest this weekend - dangerous,
> I know. I'd like to dabble with SO2R "extra lite", just to pick up an
> additional mult from time-to-time. Don't really want to get into the
> complexity and expense of SO2R software, interconnections and 2nd
> transceiver.
>
> What I had in mind was to monitor the second band with a separate receiver
> and antenna - maybe an SDR - with just an earbud stuffed into one ear. For
> example, when running on 20 with the K3, I could be searching 15 for missing
> mults while the CQ is in process. If I find one, it would be really slick
> if I could dial in the frequency on the K3 VFO B. Then at the opportune
> time, switch the K3 to 15, press A/B and give him a call. Two button
> presses. Only one to go back to my 20 meter frequency. (when contesting I
> have the unused bands mapped out). The logging software should track this
> w/o any difficulty.
>
> I understand the limitation of the K3 of receiving on two different bands
> due to the lowpass filtering, but I'm not asking for that. Just would like
> a way to set the VFO B in advance so that it is ready to go when I do the
> band switch, saving lots of time.
>
> I admit to no knowledge of SO2R, so I could be all wet. I also could be
> opening up a can of worms and/or Pandora's box. But I do know that there
> are several very experienced people on this list about both SO2R and the K3
> design, and would be interested in their feedback.
>
> 73
> .... Craig AC0DS
>
>
>
> ______________________________________________________________
> 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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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