Hi all, Report on EO-73 transponder operation 0830 hrs UTC 4/515 ( My location Wales -UK -IO81EM. At 0833 hrs UTC, I heard Peter 2E0SQL calling CQ on downlink frequency 145.964 Mhz. He was 5/9 but I could also hear some other burst of noise? - Due to my terrain and obstructions I could not get access into the satellite but will try again on the next pass which is a much higher elevation. Congratulation to the team and to Peter of course for his success. Ken Eaton GW1FKY
Worked Bill, ZL2AYZ at 0915 UTC with EO-79 in full eclipse. Signals quite variable and never particularly strong and at times somewhat marginal copy. We repeated the exercise on AO-73 at 0953 UTC with strong to very strong and consistent signals although it should be noted that the EO-79 pass was at 12 deg. elevation while the AO-73 pass was at 35 deg. elevation. Thanks for the opportunity to try a new one.
Alan ZL2BX
-----Original Message----- From: GW1FKY--- via AMSAT-BB Sent: Monday, May 4, 2015 8:49 AM To: amsat-bb@amsat.org Subject: [amsat-bb] EO-79 Report
Hi all, Report on EO-73 transponder operation 0830 hrs UTC 4/515 ( My location Wales -UK -IO81EM. At 0833 hrs UTC, I heard Peter 2E0SQL calling CQ on downlink frequency 145.964 Mhz. He was 5/9 but I could also hear some other burst of noise? - Due to my terrain and obstructions I could not get access into the satellite but will try again on the next pass which is a much higher elevation. Congratulation to the team and to Peter of course for his success. Ken Eaton GW1FKY _______________________________________________ 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
On the 10:00 UTC pass again worked Mike G0MJW who at 20 degrees was S5 then just before it was commanded off at 30 degrees was S9 without any preamps using Wimo X-Quads.
Fading didn't seem too bad this pass however we both noticed that there was a big frequency error 5kHz compared to earlier where it wasn't so bad.
73,
Peter, 2E0SQL
On 4 May 2015 at 11:14, alancresswell@xtra.co.nz wrote:
Worked Bill, ZL2AYZ at 0915 UTC with EO-79 in full eclipse. Signals quite variable and never particularly strong and at times somewhat marginal copy. We repeated the exercise on AO-73 at 0953 UTC with strong to very strong and consistent signals although it should be noted that the EO-79 pass was at 12 deg. elevation while the AO-73 pass was at 35 deg. elevation. Thanks for the opportunity to try a new one.
Alan ZL2BX
-----Original Message----- From: GW1FKY--- via AMSAT-BB Sent: Monday, May 4, 2015 8:49 AM To: amsat-bb@amsat.org Subject: [amsat-bb] EO-79 Report
Hi all, Report on EO-73 transponder operation 0830 hrs UTC 4/515 ( My location Wales -UK -IO81EM. At 0833 hrs UTC, I heard Peter 2E0SQL calling CQ on downlink frequency 145.964 Mhz. He was 5/9 but I could also hear some other burst of noise? - Due to my terrain and obstructions I could not get access into the satellite but will try again on the next pass which is a much higher elevation. Congratulation to the team and to Peter of course for his success. Ken Eaton GW1FKY _______________________________________________ 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
Hi Pete,
there was a big frequency error 5kHz compared to earlier where it
Was that compared to the pre-launch values? The frequencies which Wouter gave were somewhat different.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Peter Goodhall <Sent: Monday, May 04, 2015 5:21 AM <To: Amsat <Subject: Re: [amsat-bb] EO-79 Report < <On the 10:00 UTC pass again worked Mike G0MJW who at 20 degrees was S5 <then just before it was commanded off at 30 degrees was S9 without any <preamps using Wimo X-Quads. < <Fading didn't seem too bad this pass however we both noticed that <there was a big frequency error 5kHz compared to earlier where it <wasn't so bad. < <73, < <Peter, 2E0SQL < <On 4 May 2015 at 11:14, alancresswell@xtra.co.nz wrote: <> Worked Bill, ZL2AYZ at 0915 UTC with EO-79 in full eclipse. Signals quite <> variable and never particularly strong and at times somewhat marginal copy. <> We repeated the exercise on AO-73 at 0953 UTC with strong to very strong and <> consistent signals although it should be noted that the EO-79 pass was at 12 <> deg. elevation while the AO-73 pass was at 35 deg. elevation. <> Thanks for the opportunity to try a new one. <> <> Alan <> ZL2BX <> <> -----Original Message----- From: GW1FKY--- via AMSAT-BB <> Sent: Monday, May 4, 2015 8:49 AM <> To: amsat-bb@amsat.org <> Subject: [amsat-bb] EO-79 Report <> <> <> Hi all, <> Report on EO-73 transponder operation 0830 hrs UTC 4/515 ( My location <> Wales -UK -IO81EM. <> At 0833 hrs UTC, I heard Peter 2E0SQL calling CQ on downlink frequency <> 145.964 Mhz. <> He was 5/9 but I could also hear some other burst of noise? - Due to my <> terrain and obstructions I could not get access into the satellite but will <> try again on the next pass which is a much higher elevation. <> Congratulation to the team and to Peter of course for his success. <> Ken Eaton <> GW1FKY <> _______________________________________________ <> 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 < < < <-- <Peter Goodhall, 2E0SQL <_______________________________________________ <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
Yes Alan, thats probably why was using pre-launch freqs.
On 4 May 2015 at 11:41, Alan wa4sca@gmail.com wrote:
Hi Pete,
there was a big frequency error 5kHz compared to earlier where it
Was that compared to the pre-launch values? The frequencies which Wouter gave were somewhat different.
73s,
Alan WA4SCA
<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Peter Goodhall <Sent: Monday, May 04, 2015 5:21 AM <To: Amsat <Subject: Re: [amsat-bb] EO-79 Report < <On the 10:00 UTC pass again worked Mike G0MJW who at 20 degrees was S5 <then just before it was commanded off at 30 degrees was S9 without any <preamps using Wimo X-Quads. < <Fading didn't seem too bad this pass however we both noticed that <there was a big frequency error 5kHz compared to earlier where it <wasn't so bad. < <73, < <Peter, 2E0SQL < <On 4 May 2015 at 11:14, alancresswell@xtra.co.nz wrote: <> Worked Bill, ZL2AYZ at 0915 UTC with EO-79 in full eclipse. Signals quite <> variable and never particularly strong and at times somewhat marginal copy. <> We repeated the exercise on AO-73 at 0953 UTC with strong to very strong and <> consistent signals although it should be noted that the EO-79 pass was at 12 <> deg. elevation while the AO-73 pass was at 35 deg. elevation. <> Thanks for the opportunity to try a new one. <> <> Alan <> ZL2BX <> <> -----Original Message----- From: GW1FKY--- via AMSAT-BB <> Sent: Monday, May 4, 2015 8:49 AM <> To: amsat-bb@amsat.org <> Subject: [amsat-bb] EO-79 Report <> <> <> Hi all, <> Report on EO-73 transponder operation 0830 hrs UTC 4/515 ( My location <> Wales -UK -IO81EM. <> At 0833 hrs UTC, I heard Peter 2E0SQL calling CQ on downlink frequency <> 145.964 Mhz. <> He was 5/9 but I could also hear some other burst of noise? - Due to my <> terrain and obstructions I could not get access into the satellite but will <> try again on the next pass which is a much higher elevation. <> Congratulation to the team and to Peter of course for his success. <> Ken Eaton <> GW1FKY <> _______________________________________________ <> 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 < < < <-- <Peter Goodhall, 2E0SQL <_______________________________________________ <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
Hi Alan / group.
Similar results here monitoring the passband.
08:30 start, heard Peter and Mike easily 55 / 57 but the elevation was only 13 ish degrees and range was never closer than around 1750km. I could hear two distinct noise peaks from the transponder at apx 145.967 and 145.952 but I could also hear transponder noise across the passband.
The transponder background noise increased whenever the EO-79 beacon was transmitting on 145.815, but that did not suppress the transponder QSOs.
Not sure about the sats attitude, but I think the signal level was slightly better as the satellite travelled away from me to the North.
At the end of the orbit 90 mins later, when it approached London from the south, the satellite switched off at 35 degrees elevation - range 1000km -the signals from Mike G0MJW and Peter 2E0SQL were strong and the quality was good.
Overall a very usable transponder but my first impression is it could be a little weaker than AO-73. No Idea why that maybe but I note that AO-73 is a 1U with a dipole, while EO-79 has a monopole working against a 20cm long structure. If that is a factor, we'll know more when Fox-1 is launched.
Thanks
David
-----Original Message----- From: alancresswell alancresswell@xtra.co.nz To: amsat-bb amsat-bb@amsat.org Sent: Mon, 4 May 2015 11:14 Subject: Re: [amsat-bb] EO-79 Report
Worked Bill, ZL2AYZ at 0915 UTC with EO-79 in full eclipse. Signals quite
variable and never particularly strong and at times somewhat marginal copy.
We repeated the exercise on AO-73 at 0953 UTC with strong to very strong and
consistent signals although it should be noted that the EO-79 pass was at 12
deg. elevation while the AO-73 pass was at 35 deg. elevation. Thanks for the opportunity to try a new one.
Alan ZL2BX
-----Original Message-----
From: GW1FKY--- via AMSAT-BB Sent: Monday, May 4, 2015 8:49 AM To: amsat-bb@amsat.org Subject: [amsat-bb] EO-79 Report
Hi all, Report on EO-73 transponder operation 0830 hrs UTC 4/515 ( My location Wales -UK -IO81EM. At 0833 hrs UTC, I heard Peter 2E0SQL calling CQ on downlink frequency 145.964 Mhz. He was 5/9 but I could also hear some other burst of noise? - Due to my terrain and obstructions I could not get access into the satellite but will try again on the next pass which is a much higher elevation. Congratulation to the team and to Peter of course for his success. Ken Eaton GW1FKY _______________________________________________ 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
participants (5)
-
Alan -
alancresswell＠xtra.co.nz -
David G0MRF -
GW1FKY＠aol.com -
Peter Goodhall