VAC is just a "sound card" so it is inherently stereo. The concern (I think and i haven't checked it) but I don't think the line out of PowerSDR is stereo. Only the speaker/headphone outputs are stereo if I remember correctly. Tim. am I wrong?
73 Neal Campbell Abroham Neal Software www.abrohamnealsoftware.com (540) 242 0911 Amateur Radio: K3NC Blog: http://www.abrohamnealsoftware.com/blog/ DXBase bug reports: email to [email protected] Abroham Neal forums: http:/www.abrohamnealsoftware.com/community/ On Wed, Dec 9, 2009 at 9:13 AM, Rudy Bakalov <[email protected]> wrote: > Mark, > > Is the VAC output stereo? If so, what do you get in the L and R channels > respectively? If you can get RX1 in one channel and RX2 in the other, N1MM > logger will have no problem feeding the two MMTTY instances. MMTTY needs > only one channel. > > Sent via BlackBerry by AT&T > > -----Original Message----- > From: "Mark Whatley" <[email protected]> > Date: Wed, 9 Dec 2009 07:38:36 > To: <[email protected]> > Subject: [Flexradio] More Flex Contesting > > The point I was trying to make in my initial post is that there is no way > to > get RX1 audio to Demod #1 and RX2 audio to Demod #2 using VAC. I was > thinking about keeping everything "internal" - that is to say using only my > 5000A and computer. No extra wires or sound interfaces. > > > > Actually I wasn't trying to accomplish SO2R. My brain is old and slow and I > have enough trouble working one radio at a time. What I was trying to do > was > use N1MM + MMTTY as the main radio interface plus a second instance of > MMTTY > that was just listening on RX2 to the same signal as on RX1 but using a > different antenna on RX2. The idea was to get a little space diversity and > hopefully what one RX can't hear the other can. It did not take long to > figure out that there is no way that I could see to do this. > > > > Dudley's suggestion about hardwiring the second demodulator has at least > one > problem I ran across. I got out my DXP38 demodulator and connected it to > the > Flex using the line out/line in/PTT jacks. Then I started an instance of > MMTTY running using VAC as the interface. The idea here was to listen to > the > same signal on the same antenna with two demodulators. Sometimes one will > be > a little better than the other and might save a contact from being lost. I > forget which way it was but one of the audio outputs dropped too low to use > when VAC was active. There was some interaction between VAC and the line > out > audio level. So that approach will not work either. > > > > It looks like the only way to do any of this is to follow Dudley's > suggestion - use the stereo output, split the RX1 audio from the RX2 audio > in PSDR and route the audio channels back into sound cards (or your > DXP38). > Lots of extra wires. > > > > So, in addition to all the other comments about antennas and keying > considerations I would request one more: The ability to connect via VAC to > each of the RX audio outputs. > > > > 73, Mark K5XH > > > > > > > > > > _______________________________________________ > FlexRadio Systems Mailing List > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > Message delivered to [email protected] > _______________________________________________ > FlexRadio Systems Mailing List > [email protected] > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ > Knowledge Base: http://kc.flex-radio.com/ Homepage: > http://www.flex-radio.com/ > Message delivered to [email protected] > _______________________________________________ FlexRadio Systems Mailing List [email protected] http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz Archives: http://www.mail-archive.com/flexradio%40flex-radio.biz/ Knowledge Base: http://kc.flex-radio.com/ Homepage: http://www.flex-radio.com/ Message delivered to [email protected]
