It is really straightforward. THERE IS NO PRE_EMPHASIS OR DE_EMPHASIS. It is flat audio.
"Incorrectly handles" is the wrong phase. Bob N4HY On Mon, Apr 4, 2011 at 3:46 PM, Dave Beumer WØDHB <d...@w0dhb.net> wrote: > Jack > > I'm not sure what "incorrectly handles" means either. > > I did try creating EQ profiles to compensate, but local folks said no EQ > sounded just as good. > Taking the highs down on RX did help. > > Most of the NFM I do is satellite and I've been fairly successful at that. > > Dave > > -----Original Message----- > From: Jack Haverty [mailto:j...@3kitty.org] > Sent: Monday, April 04, 2011 1:46 PM > To: Dave Beumer WØDHB > Cc: flexradio@flex-radio.biz > Subject: RE: [Flexradio] PowerSDR 2.0.22 FMN Operation? > > Dave - thanks for doing the experiment! I tried it again (FMN on > 29.610) and afterwards everything still worked fine. Must have been > that geomagnetic storm..... > > The release notes just say "FMN mode incorrectly handles audio > pre-emphasis and de-emphasis of signals." I'm not sure what > "incorrectly handles" means, but I assume that it must work well enough > to be usable, since you're using it. Did you set up some EQ profiles > for FMN that compensate as a workaround? > > This did teach me to export the database after I get everything set up, > so I have something to reload from next time! > > 73, > /Jack de K3FIV > > > On Sun, 2011-04-03 at 14:28 -0600, Dave Beumer WØDHB wrote: > > Jack > > > > I tried FMN on HF and it worked ok. > > > > One thing to be aware of, when you switch between FMN and any other mode, > > your drive control creeps down and if you switch between FMN and other > mode > > enough it will go to zero . > > > > Dave > > > > -----Original Message----- > > From: flexradio-boun...@flex-radio.biz > > [mailto:flexradio-boun...@flex-radio.biz] On Behalf Of Jack Haverty > > Sent: Sunday, April 03, 2011 1:50 PM > > To: flexradio@flex-radio.biz > > Subject: [Flexradio] PowerSDR 2.0.22 FMN Operation? > > > > I've been using PSDR 2.0.22 with my Flex-3000, and it's been working > > great. Yesterday, FO8RZ (Tahiti) was CQing on 10M FM 29.610. I've > > never worked FM with the Flex before, so I decided to give it a try - my > > first-ever FM simplex contact on HF. So I hit the FMN button and went > > to 29.610 > > > > I managed to get his signal tuned in. It sounded a bit "tinny" but was > > perfectly readable. I wasn't sure what mode he was using. Curiously, > > he sounded about the same in SAM mode as he did in FMN mode, which I > > don't understand. Anyway, I gave him a call in FMN and made the > > contact, so I guess FMN was working well enough to be heard. > > > > A few minutes later I went back to USB and tried to make a contact as > > I've been doing every day. When I spoke, the VOX kicked in and switched > > to transmit - but it took 4-5 seconds to redraw the screen, and the > > power output meter was giving strange readings, e.g., -237, 0, etc. > > Plus I don't think anybody could hear me. I tried CW with similar > > results - hitting the paddle switched, slowly, into TX but weird noises > > came out on the sidetone, and again no one could hear me. Holding the > > paddle to the dot side, I would get a single dot, then a pause, then a > > string of dots. But power out read 0, or negative numbers. RX seemed > > to work fine, but TX was dead. > > > > I tried stop/start of PSDR, and also killing PSDR and re-launching, with > > identical results. Also tried complete power cycle of everything > > including the PC. No change. > > > > Finally, I tried "Restore to Factory Defaults" and that seems to fix > > things - won't know for sure until I get all my settings back where I > > had them before that FMN contact. > > > > I know there are still some "issues" with the Flex FM implementation, > > but I thought they had to do with the lack of CTCSS, and incorrect > > de/pre-emphasis (which might explain the tinny sound). > > > > Is anybody successfully using FMN mode now, on FM simplex? I'm hesitant > > to try FMN again. > > > > 73, > > /Jack de K3FIV > > > > Flex-3000, PSDR 2.0.22, Windows XP/SP3, Carolina Windom at 35 feet > > > > > > > > > > _______________________________________________ > > FlexRadio Systems Mailing List > > FlexRadio@flex-radio.biz > > 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.flexradio.com/ Homepage: > > http://www.flexradio.com/ > > > > > > > _______________________________________________ > FlexRadio Systems Mailing List > FlexRadio@flex-radio.biz > 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.flexradio.com/ Homepage: > http://www.flexradio.com/ > _______________________________________________ FlexRadio Systems Mailing List FlexRadio@flex-radio.biz 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.flexradio.com/ Homepage: http://www.flexradio.com/
