2315Z pass.
I could see someone in the passband, but it showed as 6 traces rather than one. Does that mean the transponder was overdriven with PSK?
I attempted to see if I could get through and at least see my downlink, but no luck. I figured even without the Doppler-compensated software, I should see my signal..30 watts to an off-center-fed dipole at 56 feet.
Thoughts/suggestions welcome.
Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg@arrl.net http://wd4elg.blogspot.com
Just curious. Doesn't the ionosphere have an attenuation on 10 meters?
Michael KC4ZVA
On Aug 7, 2016, at 7:28 PM, Mark Lunday wd4elg@triad.rr.com wrote:
2315Z pass.
I could see someone in the passband, but it showed as 6 traces rather than one. Does that mean the transponder was overdriven with PSK?
I attempted to see if I could get through and at least see my downlink, but no luck. I figured even without the Doppler-compensated software, I should see my signal..30 watts to an off-center-fed dipole at 56 feet.
Thoughts/suggestions welcome.
Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg@arrl.net http://wd4elg.blogspot.com
_______________________________________________ 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
if it did then Oscar 7 and similar would not have worked, how about the Russian birds too 15 and 10 meters.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com On 8/7/2016 7:07 PM, Mvivona via AMSAT-BB wrote:
Just curious. Doesn't the ionosphere have an attenuation on 10 meters?
Michael KC4ZVA
On Aug 7, 2016, at 7:28 PM, Mark Lunday wd4elg@triad.rr.com wrote:
2315Z pass.
I could see someone in the passband, but it showed as 6 traces rather than one. Does that mean the transponder was overdriven with PSK?
I attempted to see if I could get through and at least see my downlink, but no luck. I figured even without the Doppler-compensated software, I should see my signal..30 watts to an off-center-fed dipole at 56 feet.
Thoughts/suggestions welcome.
Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg@arrl.net http://wd4elg.blogspot.com
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
Those satellites all had resonant 10 meter antennas (as the downlink). Even so, attenuation when the band is open is easily noticeable.
NO-84 has a non-resonant whip for the uplink. It's 72" long. A full-size 1/4 wave monopole would be 99.8". That presents an additional challenge requiring higher uplink power (WB4APR recommends 75 watts to a 1/4 wave vertical, about 3 times what was suggested at launch).
73,
Paul, N8HM
On Sun, Aug 7, 2016 at 8:55 PM, Joe nss@mwt.net wrote:
if it did then Oscar 7 and similar would not have worked, how about the Russian birds too 15 and 10 meters.
Joe WB9SBD Sig The Original Rolling Ball Clock Idle Tyme Idle-Tyme.com http://www.idle-tyme.com
On 8/7/2016 7:07 PM, Mvivona via AMSAT-BB wrote:
Just curious. Doesn't the ionosphere have an attenuation on 10 meters?
Michael KC4ZVA
On Aug 7, 2016, at 7:28 PM, Mark Lunday wd4elg@triad.rr.com wrote:
2315Z pass.
I could see someone in the passband, but it showed as 6 traces rather than one. Does that mean the transponder was overdriven with PSK?
I attempted to see if I could get through and at least see my downlink, but no luck. I figured even without the Doppler-compensated software, I should see my signal..30 watts to an off-center-fed dipole at 56 feet.
Thoughts/suggestions welcome.
Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg@arrl.net http://wd4elg.blogspot.com
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
Mark,
I was not on NO-84 today, but there may have been a 10 m north/south band opening. I do not think only 30w will turn on the FM transmitter from North America. During good band openings, I have seen LU and PY stations turn on the satellite. If what you saw were terrestrial stations, the traces should have been skewed, probably at different rates.
I use NO-84 regularly, it takes 80-100 watts into a 1/2 wave vertical to keep the FM transmitter turned on. The downlink signal is strong and EZ copy, but however, when noise is high on 10 meters, it re-transmits this noise onto the FM downlink, making for hard copy.
BOB KO6TZ
2315Z pass.
I could see someone in the passband, but it showed as 6 traces rather than one. Does that mean the transponder was overdriven with PSK?
I attempted to see if I could get through and at least see my downlink, but no luck. I figured even without the Doppler-compensated software, I should see my signal..30 watts to an off-center-fed dipole at 56 feet.
Thoughts/suggestions welcome.
Mark Lunday, WD4ELG Greensboro, NC FM06be wd4elg at arrl.net http://wd4elg.blogspot.com
participants (5)
-
Joe -
KO6TZ Bob -
Mark Lunday -
Mvivona -
Paul Stoetzer