K3 and PTCIIUSB
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Have any of you got your K3 working with an SCS PTCII modem?
Mine connects through LINE IN, LINE OUT and PTT. The beta version of Airmail 3.4.034 has a K3 option and its HF Terminal module puts the K3 in DATA A mode. But I get only one block of RF on the K3 RF meter regardless of settings of PSKA and FSKA in Airmail and boosting K3 LINE IN gain. Changing to USB and widening the filter, with zero CMP, power is fine -- 50 watts -- and connects to PMBOs. No joy with DATA A. I'm probably missing something simple -- this my first week with PACTOR. Just got the modem. Seems odd that Airmail works with the K3 in USB and not in DATA A. I read that DATA A keeps leaves the compression at zero, which is required for PACTOR 3, so would like to use it to avoid manually changing it from voice digital. Any idea what could cause the difference? Sound card digital modes work fine throgh the same LINE IN and LINE OUT connections and K3 settings (I use USB). I've had QSOs with MT63, OLIVA and WINMOR using MIXW and RMS Express. I'd like to learn which parameter settings you found that you are happy with (in the K3 and in Airmail). Thanks for any ideas, 73, Bob K5LLF |
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Bob,
When you used USB you said you widened the filter. I'm guessing that was the key to your success. Try widening the filter in DATA A mode. The filter in DATA A is centered on 1500 Hz, and the default width is 400 Hz. I don't know where the PTC II's Pactor tones are centered, but I am guessing they are outside the DSP filter bandpass at the K3's normal narrow filter setting. Once you have determined where the PTC II's tones are, you can use the K3's SHIFT control to re-center the filter on them and then use WIDTH to widen or narrow the bandwidth as appropriate. The same is probably true for your other digital modes. A 400 Hz filter centered on 1500 Hz will not work with MT63, for example, but simply readjusting the filter settings will allow you to use DATA A for MT63. 73, Rich VE3KI K5LLF wrote: >The beta version of Airmail 3.4.034 has a K3 option and its HF > Terminal module puts the K3 in DATA A mode. But I get only one > block of RF on the K3 RF meter regardless of settings of PSKA > and FSKA in Airmail and boosting K3 LINE IN gain. Changing to > USB and widening the filter, with zero CMP, power is fine -- > 50watts -- and connects to PMBOs. No joy with DATA A. ______________________________________________________________ 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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Thanks, Rich!
I had not thought of that. I'll give it
atry.
Appreciatively,
73
Bob
K5LLF
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In reply to this post by Bob
hi Bob,
Bob schrieb am 14 Aug 2010 um 13:52: > Have any of you got your K3 working with an SCS PTCII modem? yes me ;-) > Mine connects through LINE IN, LINE OUT and PTT. The beta version of > Airmail 3.4.034 has a K3 option and its HF Terminal module puts the K3 in > DATA A mode. But I get only one block of RF on the K3 RF meter regardless > of settings of PSKA and FSKA in Airmail and boosting K3 LINE IN gain. > Changing to USB and widening the filter, with zero CMP, power is fine -- 50 > watts -- and connects to PMBOs. No joy with DATA A. sounds like your line in gain is set to zero. > I'm probably missing something simple -- this my first week with PACTOR. > Just got the modem. Seems odd that Airmail works with the K3 in USB and > not in DATA A. I read that DATA A keeps leaves the compression at zero, > which is required for PACTOR 3, so would like to use it to avoid manually > changing it from voice digital. Any idea what could cause the difference? > > Sound card digital modes work fine throgh the same LINE IN and LINE OUT > connections and K3 settings (I use USB). I've had QSOs with MT63, OLIVA > and WINMOR using MIXW and RMS Express. > > I'd like to learn which parameter settings you found that you are happy > with (in the K3 and in Airmail). set your transceiver into DATA A mode, USB, -S activated (MENU SYNC DT set) then tap Menu and check if Mic Sel is LINE IN. Then adjust Line in Gain using the Speed / Mic Pot (set to Mic). PTT RLS 012. 73! de Werner OE9FWV -- You can't have everything. Where would you put it? Email powered by Pegasus Mail free at <http://www.pmail.com> Homepage: <http://www.qsl.net/oe9fwv/> Fone +43 5522 75013 Fax +43 5522 22505 Mobile +43 664 6340014 Fax-Email Gateway +43 820 220262990 ______________________________________________________________ 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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In reply to this post by Richard Ferch
hi Richard,
Richard Ferch schrieb am 14 Aug 2010 um 17:46: > When you used USB you said you widened the filter. I'm guessing that was > the key to your success. Try widening the filter in DATA A mode. The filter > in DATA A is centered on 1500 Hz, and the default width is 400 Hz. I don't > know where the PTC II's Pactor tones are centered, but I am guessing they > are outside the DSP filter bandpass at the K3's normal narrow filter > setting. Once you have determined where the PTC II's tones are, you can use > the K3's SHIFT control to re-center the filter on them and then use WIDTH > to widen or narrow the bandwidth as appropriate. > > The same is probably true for your other digital modes. A 400 Hz filter > centered on 1500 Hz will not work with MT63, for example, but simply > readjusting the filter settings will allow you to use DATA A for MT63. The filter width is important but not his problem. He reported that he has no LINE IN gain. (RF out zero) Filter width for Pactor 1+2 is 500Hz, center on 1500 is default, but can be adjusted in the Ptc-2 (tone setting 4 will set the tones to 1400 - 1600Hz) For Pactor 3 the full SSB bandwidth is needed, so set the filter to 2400. Center is 1500Hz by default. (again tones 4 - which is set by Airmail and cannot be changed) 73! de Werner OE9FWV -- I'm not a complete idiot - several parts are missing. Email powered by Pegasus Mail free at <http://www.pmail.com> Homepage: <http://www.qsl.net/oe9fwv/> Fone +43 5522 75013 Fax +43 5522 22505 Mobile +43 664 6340014 Fax-Email Gateway +43 820 220262990 ______________________________________________________________ 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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