The central USA pass was much like the eastern pass. Signals from the satellite were very strong. Audio was very loud, even on the wideband rx setting on the TS2000. Audio cut off after a few seconds of transmission was prevalent. It seems that it took several seconds for the audio to come back when this happened. Lots of stations on the bird including KC8ZFN, KD8CAO, WB8OTH, WC7V, WA4NVM, KB1RVT, WA4SCA, KB0RZD, N5AFV, WD9EWK, N5UXT, WB2IOL, KF9L, AA5PK and others. The bird went over the horizon before it turned off.
http://www.papays.com/SO-67_14Nov2009_152116z.mp3
The next Western USA pass is not visible in Cleveland.
73, John K8YSE EN91dh
John Papay john@papays.com
Thanks John,
It would be very interesting to hear from other parts of the world where only 1-2 stations are on whether the dropouts are similar. That would help clarify the situation. SO-50 has similar dropouts, and AO-51 did as well when the PL access was enabled.
Alan WA4SCA
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of John Papay Sent: 14 November, 2009 09:45 To: amsat-bb@amsat.org Subject: [amsat-bb] SO-67 14Nov2009 1521z Audio
The central USA pass was much like the eastern pass. Signals from the satellite were very strong. Audio was very loud, even on the wideband rx setting on the TS2000. Audio cut off after a few seconds of transmission was prevalent. It seems that it took several seconds for the audio to come back when this happened. Lots of stations on the bird including KC8ZFN, KD8CAO, WB8OTH, WC7V, WA4NVM, KB1RVT, WA4SCA, KB0RZD, N5AFV, WD9EWK, N5UXT, WB2IOL, KF9L, AA5PK and others. The bird went over the horizon before it turned off.
http://www.papays.com/SO-67_14Nov2009_152116z.mp3
The next Western USA pass is not visible in Cleveland.
73, John K8YSE EN91dh
John Papay john@papays.com
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Hi Alan,
Well I have just had a pass over ZL with only one other station on and the performance was quite interesting and repeatable. When the transponder is triggered it stays on and does not drop out. Once the transponder is released it has a few seconds of tail. Every attempt to retrigger the transponder during the tail resulted in a drop-out of two or three seconds. If you wait until the tail drops out it will retrigger as normal and hold in without a problem. In other words if I drop my carrier the transponder seems to enter its "tail mode". If the second station begins transmitting within this tail the transponder ignores that signal and still drops out. If the second station waits for the tail to drop and then starts transmitting the transponder holds in without drop-out.
73 Alan ZL2BX
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Alan P. Biddle Sent: Saturday, 14 November 2009 16:14 To: AMSAT-BB Subject: [amsat-bb] Re: SO-67 14Nov2009 1521z Audio
Thanks John,
It would be very interesting to hear from other parts of the world where only 1-2 stations are on whether the dropouts are similar. That would help clarify the situation. SO-50 has similar dropouts, and AO-51 did as well when the PL access was enabled.
Alan WA4SCA
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of John Papay Sent: 14 November, 2009 09:45 To: amsat-bb@amsat.org Subject: [amsat-bb] SO-67 14Nov2009 1521z Audio
The central USA pass was much like the eastern pass. Signals from the satellite were very strong. Audio was very loud, even on the wideband rx setting on the TS2000. Audio cut off after a few seconds of transmission was prevalent. It seems that it took several seconds for the audio to come back when this happened. Lots of stations on the bird including KC8ZFN, KD8CAO, WB8OTH, WC7V, WA4NVM, KB1RVT, WA4SCA, KB0RZD, N5AFV, WD9EWK, N5UXT, WB2IOL, KF9L, AA5PK and others. The bird went over the horizon before it turned off.
http://www.papays.com/SO-67_14Nov2009_152116z.mp3
The next Western USA pass is not visible in Cleveland.
73, John K8YSE EN91dh
John Papay john@papays.com
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Have just completed a second pass this morning over VK/ZL and this confirms the previous observations(seven or eight stations on). Waiting for the transponder tail out before transmitting shows no dropouts. Any transmissions started within the tail dropped out when the tail dropped out.
Alan ZL2BX
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Alan Cresswell Sent: Saturday, 14 November 2009 20:52 To: 'AMSAT-BB' Subject: [amsat-bb] Re: SO-67 14Nov2009 1521z Audio
Hi Alan,
Well I have just had a pass over ZL with only one other station on and the performance was quite interesting and repeatable. When the transponder is triggered it stays on and does not drop out. Once the transponder is released it has a few seconds of tail. Every attempt to retrigger the transponder during the tail resulted in a drop-out of two or three seconds. If you wait until the tail drops out it will retrigger as normal and hold in without a problem. In other words if I drop my carrier the transponder seems to enter its "tail mode". If the second station begins transmitting within this tail the transponder ignores that signal and still drops out. If the second station waits for the tail to drop and then starts transmitting the transponder holds in without drop-out.
73 Alan ZL2BX
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Alan P. Biddle Sent: Saturday, 14 November 2009 16:14 To: AMSAT-BB Subject: [amsat-bb] Re: SO-67 14Nov2009 1521z Audio
Thanks John,
It would be very interesting to hear from other parts of the world where only 1-2 stations are on whether the dropouts are similar. That would help clarify the situation. SO-50 has similar dropouts, and AO-51 did as well when the PL access was enabled.
Alan WA4SCA
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of John Papay Sent: 14 November, 2009 09:45 To: amsat-bb@amsat.org Subject: [amsat-bb] SO-67 14Nov2009 1521z Audio
The central USA pass was much like the eastern pass. Signals from the satellite were very strong. Audio was very loud, even on the wideband rx setting on the TS2000. Audio cut off after a few seconds of transmission was prevalent. It seems that it took several seconds for the audio to come back when this happened. Lots of stations on the bird including KC8ZFN, KD8CAO, WB8OTH, WC7V, WA4NVM, KB1RVT, WA4SCA, KB0RZD, N5AFV, WD9EWK, N5UXT, WB2IOL, KF9L, AA5PK and others. The bird went over the horizon before it turned off.
http://www.papays.com/SO-67_14Nov2009_152116z.mp3
The next Western USA pass is not visible in Cleveland.
73, John K8YSE EN91dh
John Papay john@papays.com
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Here's my recording of the Western USA pass recorded at DM91 and beginning at 1700 Max elevation was 10 degrees.
http://pages.suddenlink.net/aa5pk/SO-67_1700Z_14_Nov_09.MP3
I wasn't ignoring those calling me, I just wasn't able to get in...
73 de Glenn AA5PK
----- Original Message ----- From: "John Papay" john@papays.com To: amsat-bb@amsat.org Sent: Saturday, November 14, 2009 9:45 AM Subject: [amsat-bb] SO-67 14Nov2009 1521z Audio
The central USA pass was much like the eastern pass. Signals from the satellite were very strong. Audio was very loud, even on the wideband rx setting on the TS2000. Audio cut off after a few seconds of transmission was prevalent. It seems that it took several seconds for the audio to come back when this happened. Lots of stations on the bird including KC8ZFN, KD8CAO, WB8OTH, WC7V, WA4NVM, KB1RVT, WA4SCA, KB0RZD, N5AFV, WD9EWK, N5UXT, WB2IOL, KF9L, AA5PK and others. The bird went over the horizon before it turned off.
http://www.papays.com/SO-67_14Nov2009_152116z.mp3
The next Western USA pass is not visible in Cleveland.
73, John K8YSE EN91dh
John Papay john@papays.com
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
Hi Glenn!
Nice to work you on that last SO-67 pass this morning. It was an easier pass to get into from DM33xp/DM43ap here in Phoenix (maximum elevation 40 degrees) compared to the earlier pass (maximum elevation 8 degrees).
I posted my two MP3 recordings from this morning, along with the MP3s from the two SO-67 passes I was on last weekend, at:
The URL was just set up, so it may not respond for a few hours until the DNS change propagates. I also posted PDFs with the passes at those times there, so you can see how things looked from here in Phoenix.
Following the advice about reducing mic gain and narrow FM helps in getting through. On the second SO-67 pass this morning, I went one step further - I held my mic about 8 inches/20cm below my mouth while transmitting. Doing that, and following the other hints, allowed me to have a transmission of more than 2 or 3 seconds get through SO-67 without dropping out. I have been using an IC-2820H with an Elk Antennas handheld 2m/70cm log periodic when I have worked SO-67.
It would be interesting to see how this satellite worked with no PL required on the uplink, since it is only being activated for 13 or 15 minutes at a time. The PL doesn't appear to be needed as a tool for power conservation, as on SO-50. Does anyone know if it is even possible for the SO-67 transponder to operate without that PL?
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/
Hi, Pat.
I agree. Narrow FM and reduced mic gain is the way to go. You came through fine.
Listened to your recordings and John's from earlier. Thanks for posting them.
Once the bird is commissioned and the drop out issue is resolved, this will be a great addition to the constellation!
73 Glenn AA5PK
----- Original Message ----- From: "Patrick STODDARD (WD9EWK/VA7EWK)" amsat-bb@wd9ewk.net To: amsat-bb@amsat.org Sent: Saturday, November 14, 2009 2:53 PM Subject: [amsat-bb] Re: SO-67 14Nov2009 1521z Audio
Hi Glenn!
Nice to work you on that last SO-67 pass this morning. It was an easier pass to get into from DM33xp/DM43ap here in Phoenix (maximum elevation 40 degrees) compared to the earlier pass (maximum elevation 8 degrees).
I posted my two MP3 recordings from this morning, along with the MP3s from the two SO-67 passes I was on last weekend, at:
The URL was just set up, so it may not respond for a few hours until the DNS change propagates. I also posted PDFs with the passes at those times there, so you can see how things looked from here in Phoenix.
Following the advice about reducing mic gain and narrow FM helps in getting through. On the second SO-67 pass this morning, I went one step further - I held my mic about 8 inches/20cm below my mouth while transmitting. Doing that, and following the other hints, allowed me to have a transmission of more than 2 or 3 seconds get through SO-67 without dropping out. I have been using an IC-2820H with an Elk Antennas handheld 2m/70cm log periodic when I have worked SO-67.
It would be interesting to see how this satellite worked with no PL required on the uplink, since it is only being activated for 13 or 15 minutes at a time. The PL doesn't appear to be needed as a tool for power conservation, as on SO-50. Does anyone know if it is even possible for the SO-67 transponder to operate without that PL?
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ _______________________________________________ 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
I think all of us could be agree that this easy working sat is a great addition to increase the interest of other felow ham and futur amateur !!!
Good work !!!!!!
73
J-F VA2SS
2009/11/14 Glenn AA5PK aa5pk@suddenlink.net
Hi, Pat.
I agree. Narrow FM and reduced mic gain is the way to go. You came through fine.
Listened to your recordings and John's from earlier. Thanks for posting them.
Once the bird is commissioned and the drop out issue is resolved, this will be a great addition to the constellation!
73 Glenn AA5PK
----- Original Message ----- From: "Patrick STODDARD (WD9EWK/VA7EWK)" amsat-bb@wd9ewk.net To: amsat-bb@amsat.org Sent: Saturday, November 14, 2009 2:53 PM Subject: [amsat-bb] Re: SO-67 14Nov2009 1521z Audio
Hi Glenn!
Nice to work you on that last SO-67 pass this morning. It was an easier pass to get into from DM33xp/DM43ap here in Phoenix (maximum elevation 40 degrees) compared to the earlier pass (maximum elevation 8 degrees).
I posted my two MP3 recordings from this morning, along with the MP3s from the two SO-67 passes I was on last weekend, at:
The URL was just set up, so it may not respond for a few hours until the DNS change propagates. I also posted PDFs with the passes at those times there, so you can see how things looked from here in Phoenix.
Following the advice about reducing mic gain and narrow FM helps in getting through. On the second SO-67 pass this morning, I went one step further - I held my mic about 8 inches/20cm below my mouth while transmitting. Doing that, and following the other hints, allowed me to have a transmission of more than 2 or 3 seconds get through SO-67 without dropping out. I have been using an IC-2820H with an Elk Antennas handheld 2m/70cm log periodic when I have worked SO-67.
It would be interesting to see how this satellite worked with no PL required on the uplink, since it is only being activated for 13 or 15 minutes at a time. The PL doesn't appear to be needed as a tool for power conservation, as on SO-50. Does anyone know if it is even possible for the SO-67 transponder to operate without that PL?
73!
Patrick WD9EWK/VA7EWK http://www.wd9ewk.net/ _______________________________________________ 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
participants (6)
-
Alan Cresswell -
Alan P. Biddle -
Glenn AA5PK -
Jean-François Ménard -
John Papay -
Patrick STODDARD (WD9EWK/VA7EWK)