Maybe it's just the ID-10-T error I'm having, but I just tried Macdoppler on the VO-52 pass and it didn't work so well. By the time I have found my downlink via the software the pass is over. I was much quicker doing it manually and had a good contact with K8YSE.
So what's the secret? What am I missing? Either Macdoppler or HRD, suggestions are welcome. Thanks, Michael K5TRI On Jul 24, 2011, at 6:42 PM, Stephen E. Belter wrote: > Tom, > > I operated that same pass of FO-29. I started with a nice conversation with > Mike, WA8EBM (Michigan), then moved on to another nice conversation with > Drew, KO4MA (Florida). All three of us were using full Doppler control. It > was great. > > I then heard you trying to chase W5BK across the passband. It is a > challenge, and good practice. ;-) > > I'm not knocking W5BK or any other operator who isn't using full Doppler. It > takes a lot of skill (a skill I never mastered) and there can be good reasons > for using manual tuning (like running portable). And I'm grateful for every > contact I make, including with W5BK, WD9EWK, and ND9M, all of whom use manual > tuning. > > But I agree with Alan, if you're in a position to run full Doppler, do it! > > 73, Steve N9IP > -- > Steve Belter, Indiana Dataline Corp > 427 N 6th Street, Suite C > Lafayette, IN 47901-2211 > Tel: (765) 269-8521 > www.indiana-dataline.net > > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Alan P. Biddle > Sent: Sunday, July 24, 2011 6:27 PM > To: 'Tom Schaefer, NY4I'; 'Amsat BB' > Subject: [amsat-bb] Re: Should I abandon full doppler correction? > > Tom, > > There was an article in the Journal a few issues back on why the various > manual techniques are only approximations, sometimes surprisingly bad ones. > I think the author's call was WA4SCA. So it does get talked about. With an > accurate clock, and current Keps it is possible to work a full pass and > scarcely touch the dial. It definitely makes it easier to conduct a round > table. If the transponder uses either modes L and/or S, you really don't > have much choice. The change rate is just too fast for practical manual > running, though VE3NPC does an amazing job. Even FM, which is very forgiving > is a challenge for manual tuning at those frequencies. > > My default is for full Doppler correction. If the other station is using it, > fine. We can concentrate on communicating. If not, I switch off and do it > the traditional way. It does provide some gentle encouragement to try a new > method, and gives you an opportunity to spread the word. I am embarrassed at > how long I stuck with paper logs amid all this technology. I experienced a > lot of nostalgia when I transferred all my old satellite contacts to > electronic format, but I have never looked back. > > Hang in there. As time goes by, you will see more stations using it, as they > won't have to unlearn years of experience. Just remember that it is a hobby, > and there are many for whom tuning and pointing are an integral part of > satellite operations. Have fun! > > Alan > WA4SCA > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Tom Schaefer, NY4I > Sent: Sunday, July 24, 2011 4:17 PM > To: Amsat BB > Subject: [amsat-bb] Should I abandon full doppler correction? > > Hi all, > > I just tried a nice pass on FO-29. I heard K9CIS on CW and W5BK from Texas. > In both cases, while I am using full doppler correction with my 9100 and > MacDoppler, I suspect they are leaving the transmit frequency fixed as they > both changed frequency. K9CIS on CW was quite extreme in the Doppler shift. > I know that this is a by-product of me using full doppler to listen to > stations that are not, but it seems that the majority of the stations I hear > are NOT using flu doppler. I have asked this question before, but it seems to > be happening more frequently. > > > Should I abandon full doppler correction? Another less black-and-white step > is that if I hear a station moving to adjust my settings so I am not doing > full doppler. > > Has anyone ever taken a survey to see how many satellite users actually use > full doppler. Am I assuming more guys use computers and anyone of the > multiple ways to do computer control that have ben available for years? Does > anyone ever talk about this in AMSAT circles? Sort of like the encouragement > one gives to people afraid of LOTW to try it? "Computers in the shack.NEVER!" > I exaggerate but it seems that way. Then again, being a computer person and > having computer capable rigs I realize I am skewed in my expectations. I know > there are guys working with old 271/471 pairs or even the old FT726 out > there. Great radios and a simple way to do it, but even they have ways to do > full doppler control and they have been out for 20 years. > > Thanks, > > Tom > Tom Schaefer, NY4I > [email protected] > EL88pb > Monitoring EchoLink node KJ4FEC-L 489389 DSTAR Capable APRS: NY4I-15 > > > > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb > > _______________________________________________ > Sent via [email protected]. Opinions expressed are those of the author. > Not an AMSAT-NA member? Join now to support the amateur satellite program! > Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb _______________________________________________ Sent via [email protected]. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb
