[amsat-bb] Re: AO-7 help
On Sat, September 26, 2009 15:41, Randy wrote: > Hi all .. Hi Randy, > And tuned the receiver and cannot find my signal .. Here is an exmaple I used yesterdag RX 145.952.500 USB TX 432.143.950 LSB Give it a try. > > Randy - N2CUA 73's Jan - PE0SAT ___ Sent via amsat...@amsat.org. 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
[amsat-bb] Re: AO-7 help
AMEN! Finally someone on this board, that also remembers what the big knob on the face of the radio is used for. Maybe it's a age thing of when you got into the hobby? Like when I got into this hobby when Novices were only allowed crystal control. It wasn't all that different from using the birds. You listened to your transmit freq. to see if it was clear. and threw out a CQ. THEN YOU TUNED THE VFO and I mean a LOT like up and down the whole band looking to hear your call. almost everyone was not by choice operated split back then. You could only afford so many crystals. I remember many times CQing on my 1 crystal for 40 meters 7.109 and find someone calling me at 7.127 or whatever freq. they happened to own. You had to listen to not only your own transmit freq. in case a general or someone with a VFO called you on freq., or if nothing heard started tuning around looking for someone off freq. It was not un common to call CQ then tune for a minute or so looking. and everyone knew this so if you were answering a CQ but way off freq. you made a long call like maybe up to a minute even to give the guy a chance to find you calling him. It just drives me insane to hear people complaining about a little doppler, turn the big knob DUH! Joe WB9SBD Glen Zook wrote: >I haven't used AO-7 for some time (need to revise my antennas to do so again). > But, back in the "goode olde dayes" (when the satellite first went into >orbit) we didn't have any problems with Doppler. The accepted method was to >leave the transmit frequency alone and keep one hand on the receiver to >compensate for the frequency shift and send CW with the other hand (or hold >the microphone for SSB). No one even thought of compensating for Doppler any >other way. > >Of course at the time everyone used a separate receiver and transmitter (no >transceivers) so you could keep the receiver active while transmitting. There >were hundreds of QSOs made on each orbit and everyone had a "ball". > >Glen, K9STH >AMSAT 239 / LM 463 > >Website: http://k9sth.com > > >--- On Sat, 9/26/09, Andrew Glasbrenner wrote: > >Those splits are only right when Doppler is zero. Other wise, you have around >+/-7 khz shift to deal with. It's really tough to work AO-7 half-duplex with >no Doppler tuning. REALLY tough. If you have a PC nearby, I'd recommend trying >to use SatPC32 to control the Doppler shift during the pass. CAT cables are >pretty cheap on Ebay, and really easy to set up with the 897. > >Also, since you are using gain antennas AND are half duplex, you should make >sure you keep the power output low, like 5 watts or so, since you can't hear >if you our overdriving the uplink and making the satellite FM for everyone. > > > >___ >Sent via amsat...@amsat.org. 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 > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2396 - Release Date: 09/26/09 >05:51:00 > > > ___ Sent via amsat...@amsat.org. 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
[amsat-bb] Re: AO-7 help
Not Hard Just Skill, Just like my other post about operating as a Novice in the days of only crystal control. You did not operate full duplex on 40 meters, yet we operated contests on one transmit freq and listened to the whole band for someone calling us. We all have just gotten incredibly lazy. Joe WB9SBD Andrew Glasbrenner wrote: >Glen Zook wrote: > > >>I haven't used AO-7 for some time (need to revise my antennas to do so >>again). But, back in the "goode olde dayes" (when the satellite first went >>into orbit) we didn't have any problems with Doppler. The accepted method >>was to leave the transmit frequency alone and keep one hand on the receiver >>to compensate for the frequency shift and send CW with the other hand (or >>hold the microphone for SSB). No one even thought of compensating for >>Doppler any other way. >> >>Of course at the time everyone used a separate receiver and transmitter (no >>transceivers) so you could keep the receiver active while transmitting. >>There were hundreds of QSOs made on each orbit and everyone had a "ball". >> >>Glen, K9STH >>AMSAT 239 / LM 463 >> >>Website: http://k9sth.com >> >> >> >The half-duplex part is what makes it hard. I ran from 1992 until about >2006 without computer tuning, although I followed the current AMSAT >protocol of tuning the higher of the two frequencies. You don't drift >into others as much that way. I've tried this all ways, and if you are >going to run half-duplex, life is much easier with CAT tuning. > >73, Drew KO4MA >___ >Sent via amsat...@amsat.org. 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 > > > > > >No virus found in this incoming message. >Checked by AVG - www.avg.com >Version: 8.5.416 / Virus Database: 270.13.113/2396 - Release Date: 09/26/09 >05:51:00 > > > ___ Sent via amsat...@amsat.org. 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
[amsat-bb] Re: AO-7 help
I haven't used AO-7 for some time (need to revise my antennas to do so again). But, back in the "goode olde dayes" (when the satellite first went into orbit) we didn't have any problems with Doppler. The accepted method was to leave the transmit frequency alone and keep one hand on the receiver to compensate for the frequency shift and send CW with the other hand (or hold the microphone for SSB). No one even thought of compensating for Doppler any other way. Of course at the time everyone used a separate receiver and transmitter (no transceivers) so you could keep the receiver active while transmitting. There were hundreds of QSOs made on each orbit and everyone had a "ball". Glen, K9STH AMSAT 239 / LM 463 Website: http://k9sth.com --- On Sat, 9/26/09, Andrew Glasbrenner wrote: Those splits are only right when Doppler is zero. Other wise, you have around +/-7 khz shift to deal with. It's really tough to work AO-7 half-duplex with no Doppler tuning. REALLY tough. If you have a PC nearby, I'd recommend trying to use SatPC32 to control the Doppler shift during the pass. CAT cables are pretty cheap on Ebay, and really easy to set up with the 897. Also, since you are using gain antennas AND are half duplex, you should make sure you keep the power output low, like 5 watts or so, since you can't hear if you our overdriving the uplink and making the satellite FM for everyone. ___ Sent via amsat...@amsat.org. 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
[amsat-bb] Re: AO-7 help
> > I use the translation table provided by AMSAT and the books.. > Have those programmed into the radio as splits.. > > LSB 432.XXX up and USB 145.XXX down . > ( mode B like this morning ) > I can hear PLENTY of QSO's. > I cannot make contact with anyone .. > > Those splits are only right when Doppler is zero. Other wise, you have around +/-7 khz shift to deal with. It's really tough to work AO-7 half-duplex with no Doppler tuning. REALLY tough. If you have a PC nearby, I'd recommend trying to use SatPC32 to control the Doppler shift during the pass. CAT cables are pretty cheap on Ebay, and really easy to set up with the 897. Also, since you are using gain antennas AND are half duplex, you should make sure you keep the power output low, like 5 watts or so, since you can't hear if you our overdriving the uplink and making the satellite FM for everyone. 73, Drew KO4MA ___ Sent via amsat...@amsat.org. 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
[amsat-bb] Re: AO-7 help
Glen Zook wrote: > I haven't used AO-7 for some time (need to revise my antennas to do so > again). But, back in the "goode olde dayes" (when the satellite first went > into orbit) we didn't have any problems with Doppler. The accepted method > was to leave the transmit frequency alone and keep one hand on the receiver > to compensate for the frequency shift and send CW with the other hand (or > hold the microphone for SSB). No one even thought of compensating for > Doppler any other way. > > Of course at the time everyone used a separate receiver and transmitter (no > transceivers) so you could keep the receiver active while transmitting. > There were hundreds of QSOs made on each orbit and everyone had a "ball". > > Glen, K9STH > AMSAT 239 / LM 463 > > Website: http://k9sth.com > The half-duplex part is what makes it hard. I ran from 1992 until about 2006 without computer tuning, although I followed the current AMSAT protocol of tuning the higher of the two frequencies. You don't drift into others as much that way. I've tried this all ways, and if you are going to run half-duplex, life is much easier with CAT tuning. 73, Drew KO4MA ___ Sent via amsat...@amsat.org. 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
[amsat-bb] Re: AO-7 help
Drew. you and I obviously have our differences. However you are one of the folks on this board (and on the BOD) who consistently helps others on the sats...and does it in a "bravo zulu" (well done) manner Robert WB5MZO > Date: Sat, 26 Sep 2009 10:30:06 -0400 > From: glasbren...@mindspring.com > To: rswa...@twcny.rr.com > CC: amsat-bb@amsat.org > Subject: [amsat-bb] Re: AO-7 help > > > > > > I use the translation table provided by AMSAT and the books.. > > Have those programmed into the radio as splits.. > > > > LSB 432.XXX up and USB 145.XXX down . > > ( mode B like this morning ) > > I can hear PLENTY of QSO's. > > I cannot make contact with anyone .. > > > > > > Those splits are only right when Doppler is zero. Other wise, you have > around +/-7 khz shift to deal with. It's really tough to work AO-7 > half-duplex with no Doppler tuning. REALLY tough. If you have a PC > nearby, I'd recommend trying to use SatPC32 to control the Doppler shift > during the pass. CAT cables are pretty cheap on Ebay, and really easy to > set up with the 897. > > Also, since you are using gain antennas AND are half duplex, you should > make sure you keep the power output low, like 5 watts or so, since you > can't hear if you our overdriving the uplink and making the satellite FM > for everyone. > > 73, Drew KO4MA > > ___ > Sent via amsat...@amsat.org. 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 _ Microsoft brings you a new way to search the web. Try Bing™ now http://www.bing.com?form=MFEHPG&publ=WLHMTAG&crea=TEXT_MFEHPG_Core_tagline_try bing_1x1 ___ Sent via amsat...@amsat.org. 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
