[amsat-bb] Re: protocol for using sats
Bill, There is a recent article from the Journal which is not on the server which might also be of interest. I will send you a copy. 73s, Alan WA4SCA -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Anthony Monteiro Sent: Friday, February 08, 2013 12:21 PM To: Bill Booth Cc: amsat-bb@amsat.org Subject: [amsat-bb] Re: protocol for using sats Hi Bill, Take a look at this, still the best info: http://www.amsat.org/amsat/features/one_true_rule.html You always receive USB but may need to Tx LSB if the transponder is inverting. 73, Tony AA2TX On 2/8/2013 12:11 PM, Bill Booth wrote: > Its been a while and I need to be refreshed. When using the sats linear > transponders how does the transmit receive work. > > Does the transmit stay on frequency and tune the receiver for best > receive, or does the receiver stay and transmit frequency changes for > best receive. Or do both move if your rig supports a satellite mode. > > Also I am hearing what I believe is both USB and LSB on the birds. Is > one sideband considered to be standard. > > ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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: protocol for using sats
Hi Bill, Take a look at this, still the best info: http://www.amsat.org/amsat/features/one_true_rule.html You always receive USB but may need to Tx LSB if the transponder is inverting. 73, Tony AA2TX On 2/8/2013 12:11 PM, Bill Booth wrote: Its been a while and I need to be refreshed. When using the sats linear transponders how does the transmit receive work. Does the transmit stay on frequency and tune the receiver for best receive, or does the receiver stay and transmit frequency changes for best receive. Or do both move if your rig supports a satellite mode. Also I am hearing what I believe is both USB and LSB on the birds. Is one sideband considered to be standard. ___ Sent via AMSAT-BB@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: protocol for using sats
Bill I tune both using SATPC32 or HRD SATtracker. You may not need a satellite mode if you use software. I've been running across many more folks that tune both these days. It definitely makes for a less chaotic passband without folks drifting through the passband. Rule of thumb is that downlink is USB Uplink is LSB for inverting transponders AO7b,FO-29,VO-52 USB for non-inverting AO7a Dave W0DHB -Original Message- From: amsat-bb-boun...@amsat.org [mailto:amsat-bb-boun...@amsat.org] On Behalf Of Bill Booth Sent: Friday, February 08, 2013 10:11 AM To: amsat-bb@amsat.org Subject: [amsat-bb] protocol for using sats Its been a while and I need to be refreshed. When using the sats linear transponders how does the transmit receive work. Does the transmit stay on frequency and tune the receiver for best receive, or does the receiver stay and transmit frequency changes for best receive. Or do both move if your rig supports a satellite mode. Also I am hearing what I believe is both USB and LSB on the birds. Is one sideband considered to be standard. -- Bill Booth VE3NXK Sundridge ON, Canada 79.23.37 W x 45.46.18 N FN05ns Visit my weather WebCam at http://www.almaguin.com/wxcurrent/weather.html Organ and Tissue Donation - The Gift of Life Talk to your family. Your decision can make a difference. ___ Sent via AMSAT-BB@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 ___ Sent via AMSAT-BB@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: protocol for using sats
Bill, Full computer doppler control is preferred, but if it isn't possible, tune the higher of the two frequencies. Check out this link for the "One true rule" http://www.amsat.org/amsat/features/one_true_rule.html Dave-KB1PVH Sent from my Verizon Wireless Droid RAZR ___ Sent via AMSAT-BB@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: protocol for using sats
On Fri, 08 Feb 2013 18:11:07 +0100, Bill Booth wrote: Its been a while and I need to be refreshed. When using the sats linear transponders how does the transmit receive work. Does the transmit stay on frequency and tune the receiver for best receive, or does the receiver stay and transmit frequency changes for best receive. Or do both move if your rig supports a satellite mode. Also I am hearing what I believe is both USB and LSB on the birds. Is one sideband considered to be standard. I think the standard is to tune the high band when tuning by hand and prefered is to tune by computer so you stay in the same spot in the passband, not sure what is standard but I think it was usb up and lsb down prefert -- 73 Andre PE1RDW ___ Sent via AMSAT-BB@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: protocol for using sats
--- On Fri, 8/2/13, Bill Booth wrote: > Its been a while and I need to be refreshed. When using the sats > linear transponders how does the transmit receive work. > > Does the transmit stay on frequency and tune the receiver > for best receive, or does the receiver stay and transmit > frequency changes for best receive. Or do both move if > your rig supports a satellite mode. There was a article on that some years ago but I'm lost the URL, anyone know it ? The conclusion was keep the receiver frequency steady and tune the transmitter. > Also I am hearing what I believe is both USB and LSB on the > birds. Is one sideband considered to be standard. USB is the standard for the Downlink. The sideband used for the uplink depends on whether it's an Inverting transponder or not. AO-7 Mode A would be USB uplink but AO-7 Mode B would be LSB uplink. 73 Trevor M5AKA ___ Sent via AMSAT-BB@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: Protocol
On 1/12/2011 2:58 AM, Gordon JC Pearce wrote: > and AO-27 is only ever enabled over the US, making it useless for most > of the > world. This is incorrect. AO-27 is on for the same times on each orbit, meaning it covers all the mid latitude northern hemisphere. If you look at oscar.dcarr.org you'll see plenty of reports for AO-27 over EU. 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: Protocol
- Original Message - From: "Gordon JC Pearce" To: Sent: Wednesday, January 12, 2011 8:58 AM Subject: [amsat-bb] Re: Protocol > > It would be great to attempt a QSO through AO-7 but again I'm > not going to go and buy a rig that costs as much as a car to do it. > > Gordon MM0YEQ > Hi Gordon , MM0YEQ To work AO-7 mode-B as I actually do you need only any old CW/SSB 70 cm TX and any old 2 meters CW/SSB RX wich cost is not as much as a new car wheel. 73" de i8CVS Domenico ___ 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: Protocol
On Tue, 2011-01-11 at 12:17 -0900, Edward R. Cole wrote: > A satellite with 25 channels would probably help. LOL This is why > a lot of the old guard satellite ops wish for the translator days > with 100-KHz of bandwidth and CW/SSB. But I do NOT want to start up > a RANT on this -everyone knows this. > > Single channel FM repeater satellites will always be saddled with > this problem - too many users/one channel. Goes with the > territory. that is reality. Another reality: lots of unused > satellites while everyone is on a single satellite - why? Because AO-51 is the most reliable satellite in terms of actually finding and working it. SO-50 seems to be almost impossible to lift, and the linear transponder ones require extremely expensive radios. You can work AO-51 with an el-cheapo dual-band handie and a homebrew antenna, and you can work /P really easily because you don't need a rotator or satellite tracking software. I'm not going to rush out and buy a VHF/UHF SSB rig just to work the odd pass, especially since I've never heard anyone on the linear birds. I don't know if VO-52 works - I've never even heard its beacon - and AO-27 is only ever enabled over the US, making it useless for most of the world. It would be great to attempt a QSO through AO-7 but again I'm not going to go and buy a rig that costs as much as a car to do it. Gordon MM0YEQ ___ 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: Protocol
A satellite with 25 channels would probably help. LOL This is why a lot of the old guard satellite ops wish for the translator days with 100-KHz of bandwidth and CW/SSB. But I do NOT want to start up a RANT on this -everyone knows this. Single channel FM repeater satellites will always be saddled with this problem - too many users/one channel. Goes with the territory. that is reality. Another reality: lots of unused satellites while everyone is on a single satellite - why? 73, Ed when I get my rotating array QRV I will be on VO-52 and AO-7.., any maybe HO-68 ocassionally. On AO-51 I will be trying mode-VS At 11:53 AM 1/11/2011, mlolms...@fuse.net wrote: >Having been a ham for over fifty years and having worked most modes of >operation, including chasing DX and even satellite back in 1979, I totally >agree that working AO-51 can get frustrating. However, if you think >the mess on AO-51 is bad, try working a rare dx expedition >sometime. Talk about pile-ups! > >As for protocols, I think I've read this same protocol discussion in >just about >every ham mag. and no one has come up with a workable solution that >solved the problem. People are individuals and they tend to do what >they want to do. > >I really wish I had a workable, amiable solution, but I don't, >sorry. However, I >don't recommend the Frequency Policemen idea, they generally just >tend to make everyone more upset and the confusion gets even worse > >Now I'll get off my soap-box. >Thanks, >Merle, AA4QE > >___ >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 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-1.4kw*, 432-100w*, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.com == *temp not in service ___ 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: Protocol
Having been a ham for over fifty years and having worked most modes of operation, including chasing DX and even satellite back in 1979, I totally agree that working AO-51 can get frustrating. However, if you think the mess on AO-51 is bad, try working a rare dx expedition sometime. Talk about pile-ups! As for protocols, I think I've read this same protocol discussion in just about every ham mag. and no one has come up with a workable solution that solved the problem. People are individuals and they tend to do what they want to do. I really wish I had a workable, amiable solution, but I don't, sorry. However, I don't recommend the Frequency Policemen idea, they generally just tend to make everyone more upset and the confusion gets even worse Now I'll get off my soap-box. Thanks, Merle, AA4QE ___ 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
