Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon
They're chasing you on FO29 too. Tuning the higher band minimizes the chase.
Greg KO6TH
On January 9, 2019 6:34:18 AM PST, NA1SA Loon na1saloon@outlook.com wrote:
Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I always tune the uplink to stay on the same downlink freq no matter if U/V or V/U.
Greg
On Jan 9, 2019, at 3:30 PM, Greg D ko6th.greg@gmail.com wrote:
They're chasing you on FO29 too. Tuning the higher band minimizes the chase.
Greg KO6TH
On January 9, 2019 6:34:18 AM PST, NA1SA Loon na1saloon@outlook.com wrote:
Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
There is not a set standard. When working the linears, you will find operators that adjust [1] uplink and downlink (usually computer controlled), [2] adjust only the uplink, and [3] adjust only the higher frequency. The latter two are normally operators performing manual tuning, but I have seen some using computer control for one VFO/radio Most common method for manual tuners and the one I use, is to fix the lower frequency (most often VHF) and adjust higher frequency (UHF) for doppler. If you are calling CQ, then pick the method best to your ability. If you are answering a CQ call, then either [1} switch to their method or [2] make your call very quick, before doppler drifts away. 73, Robert Bankston, KE4ALAMSAT-NA VP of User Services Twitter: @KE4ALabamaWebsite: KE4AL.wordpress.com
On Wednesday, January 9, 2019, 2:10:09 PM CST, NA1SA Loon na1saloon@outlook.com wrote:
Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
There very much is a recommended standard operating practice. Not everyone follows it, but if they would, there would be less drifting about. If you can't tune both, tune the higher frequency.
See https://www.amsat.org/wordpress/wp-content/uploads/2015/02/FDT-WA4SCA.pdf
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Robert Bankston via AMSAT-BB Sent: Wednesday, January 09, 2019 4:02 PM To: AMSAT-BB amsat-bb@amsat.org; NA1SA Loon na1saloon@outlook.com Subject: Re: [amsat-bb] SSB Satellites
There is not a set standard. When working the linears, you will find operators that adjust [1] uplink and downlink (usually computer controlled), [2] adjust only the uplink, and [3] adjust only the higher frequency. The latter two are normally operators performing manual tuning, but I have seen some using computer control for one VFO/radio Most common method for manual tuners and the one I use, is to fix the lower frequency (most often VHF) and adjust higher frequency (UHF) for doppler. If you are calling CQ, then pick the method best to your ability. If you are answering a CQ call, then either [1} switch to their method or [2] make your call very quick, before doppler drifts away. 73, Robert Bankston, KE4ALAMSAT-NA VP of User Services Twitter: @KE4ALabamaWebsite: KE4AL.wordpress.com
On Wednesday, January 9, 2019, 2:10:09 PM CST, NA1SA Loon na1saloon@outlook.com wrote:
Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
_______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
TNX OM for the info, very helpful. Hope many OPS will read the PDF
73 Chuck N7BFO
On 1/9/2019 1:17 PM, Andrew Glasbrenner wrote:
There very much is a recommended standard operating practice. Not everyone follows it, but if they would, there would be less drifting about. If you can't tune both, tune the higher frequency.
See https://www.amsat.org/wordpress/wp-content/uploads/2015/02/FDT-WA4SCA.pdf
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Robert Bankston via AMSAT-BB Sent: Wednesday, January 09, 2019 4:02 PM To: AMSAT-BB amsat-bb@amsat.org; NA1SA Loon na1saloon@outlook.com Subject: Re: [amsat-bb] SSB Satellites
There is not a set standard. When working the linears, you will find operators that adjust [1] uplink and downlink (usually computer controlled), [2] adjust only the uplink, and [3] adjust only the higher frequency. The latter two are normally operators performing manual tuning, but I have seen some using computer control for one VFO/radio Most common method for manual tuners and the one I use, is to fix the lower frequency (most often VHF) and adjust higher frequency (UHF) for doppler. If you are calling CQ, then pick the method best to your ability. If you are answering a CQ call, then either [1} switch to their method or [2] make your call very quick, before doppler drifts away. 73, Robert Bankston, KE4ALAMSAT-NA VP of User Services Twitter: @KE4ALabamaWebsite: KE4AL.wordpress.com
On Wednesday, January 9, 2019, 2:10:09 PM CST, NA1SA Loon <na1saloon@outlook.com> wrote:Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
I guess there was a time when manual tuning was the in-thing, even though everyone would drift off the end of the bird's pass-band. However, speaking of the 21st century, I've always considered computer based Doppler tuning as a minimum in my operations with SSB birds.
Technically, each station should be using ONE frequency pair "at the satellite". In fact apps like SatPC32 and HRD et al, have been designed precisely for this. Someday a dedicated Arduino or PIC based dongle may replace the need for a full fledged PC to do this. 73! Umesh k6vug
On Wednesday, January 9, 2019, 8:50:41 PM PST, CEE cee@palomarlight.com wrote:
TNX OM for the info, very helpful. Hope many OPS will read the PDF
73 Chuck N7BFO
On 1/9/2019 1:17 PM, Andrew Glasbrenner wrote:
There very much is a recommended standard operating practice. Not everyone follows it, but if they would, there would be less drifting about. If you can't tune both, tune the higher frequency.
See https://www.amsat.org/wordpress/wp-content/uploads/2015/02/FDT-WA4SCA.pdf
73, Drew KO4MA
-----Original Message----- From: AMSAT-BB amsat-bb-bounces@amsat.org On Behalf Of Robert Bankston via AMSAT-BB Sent: Wednesday, January 09, 2019 4:02 PM To: AMSAT-BB amsat-bb@amsat.org; NA1SA Loon na1saloon@outlook.com Subject: Re: [amsat-bb] SSB Satellites
There is not a set standard. When working the linears, you will find operators that adjust [1] uplink and downlink (usually computer controlled), [2] adjust only the uplink, and [3] adjust only the higher frequency. The latter two are normally operators performing manual tuning, but I have seen some using computer control for one VFO/radio Most common method for manual tuners and the one I use, is to fix the lower frequency (most often VHF) and adjust higher frequency (UHF) for doppler. If you are calling CQ, then pick the method best to your ability. If you are answering a CQ call, then either [1} switch to their method or [2] make your call very quick, before doppler drifts away. 73, Robert Bankston, KE4ALAMSAT-NA VP of User Services Twitter: @KE4ALabamaWebsite: KE4AL.wordpress.com
On Wednesday, January 9, 2019, 2:10:09 PM CST, NA1SA Loon na1saloon@outlook.com wrote: Just asking for clarification, or how do most do this...
When working a Sat other than FO-29 (where I stay locked on the 2 meter up frequency and tune the 70cm down frequency), say one of the XW or CAS birds where the downlink is 2 meters and up is 70cm... which frequency stays locked and which gets tuned? I've read that you tune the higher frequency, but then wouldn't the other station be chasing me?
Loon
participants (7)
-
Andrew Glasbrenner -
CEE -
Greg -
Greg D -
k6vug＠sbcglobal.net -
NA1SA Loon -
Robert Bankston