AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM
That should be 2100Z...
On Mon, Aug 3, 2015 at 5:08 PM, Paul Stoetzer n8hm@arrl.net wrote:
AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM
Yes, I heard the same thing. It made it very difficult to understand the voice contact as the audio went all wobbly. And I also detected the CW splatter.
Michael Vivona Sent from my iPad
On Aug 3, 2015, at 5:09 PM, Paul Stoetzer n8hm@arrl.net wrote:
That should be 2100Z...
On Mon, Aug 3, 2015 at 5:08 PM, Paul Stoetzer n8hm@arrl.net wrote: AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM
_______________________________________________ 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
Unfortunately, the technical portions, of 47 CFR Part 97, are extremely vague and are, in most cases, open for interpretation. For example, 47 CFR Part 97 Section 97.101(d) reads as follows: (d) No amateur operator shall willfully or maliciously interfere with or cause interference to any radio communication or signal. Most operators do not know if they are running too much power. Depending on the distance from the satellite, to the transmitting station, running exactly the same power level, on different passes, may result in not enough signal to make a reliable contact to enough power to overload the transponder. The interpretation most usually applied to this regulation, is the deliberate, on frequency (or extremely close in frequency) operation with the purpose, in mind, of causing interference with another station. Also, operating on the same frequency may not be detected by a particular station because of Doppler shift being different between the stations involved. 47 CFR Part 97 Section 97.313(a) reads as follows: (a) An amateur station must use the minimum transmitter power necessary to carry out the desired communications.
However, the interpretation of "desired communications" is not defined. As such, one station may only desire an extremely hard to copy signal, right at the noise level, whereas, another station may desire "arm chair" copy. In each case, the definition of "desired communications" has been met and the effect, on the satellite, is completely different. The only real solution is for each operator to use his/her 6th and 7th senses. Man is born with the usual sight, feel, smell, touch, and hearing. However, there are 2-additional senses with which people are born: Common sense and horse sense! Unfortunately, the 6th, as well as the 7th, sense is often lost, over the years, and, as such, do not play the very important role that they were intended. Glen, K9STH
Website: http://k9sth.net From: Paul Stoetzer n8hm@arrl.net To: "amsat-bb@amsat.org" amsat-bb@amsat.org Sent: Monday, August 3, 2015 4:08 PM Subject: [amsat-bb] Are we ever going to learn?
AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM _______________________________________________ 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
Forgot "taste" and included "touch" twice! Glen, K9STH
Website: http://k9sth.net From: Glen Zook via AMSAT-BB amsat-bb@amsat.org To: Paul Stoetzer n8hm@arrl.net; "amsat-bb@amsat.org" amsat-bb@amsat.org Sent: Monday, August 3, 2015 4:59 PM Subject: Re: [amsat-bb] Are we ever going to learn?
Unfortunately, the technical portions, of 47 CFR Part 97, are extremely vague and are, in most cases, open for interpretation. For example, 47 CFR Part 97 Section 97.101(d) reads as follows: (d) No amateur operator shall willfully or maliciously interfere with or cause interference to any radio communication or signal. Most operators do not know if they are running too much power. Depending on the distance from the satellite, to the transmitting station, running exactly the same power level, on different passes, may result in not enough signal to make a reliable contact to enough power to overload the transponder. The interpretation most usually applied to this regulation, is the deliberate, on frequency (or extremely close in frequency) operation with the purpose, in mind, of causing interference with another station. Also, operating on the same frequency may not be detected by a particular station because of Doppler shift being different between the stations involved. 47 CFR Part 97 Section 97.313(a) reads as follows: (a) An amateur station must use the minimum transmitter power necessary to carry out the desired communications.
However, the interpretation of "desired communications" is not defined. As such, one station may only desire an extremely hard to copy signal, right at the noise level, whereas, another station may desire "arm chair" copy. In each case, the definition of "desired communications" has been met and the effect, on the satellite, is completely different. The only real solution is for each operator to use his/her 6th and 7th senses. Man is born with the usual sight, feel, smell, touch, and hearing. However, there are 2-additional senses with which people are born: Common sense and horse sense! Unfortunately, the 6th, as well as the 7th, sense is often lost, over the years, and, as such, do not play the very important role that they were intended. Glen, K9STH
Website: http://k9sth.net From: Paul Stoetzer n8hm@arrl.net To: "amsat-bb@amsat.org" amsat-bb@amsat.org Sent: Monday, August 3, 2015 4:08 PM Subject: [amsat-bb] Are we ever going to learn? AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM _______________________________________________ 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
If you could copy the cq could you copy the call?
At 432 MHz the AO-7 uplink is actually in the weak signal part of the band. It is very possible a weak signal station unknowingly did this...
A friendly email to the station may help!
73, Joe kk0sd
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Paul Stoetzer Sent: Monday, August 03, 2015 4:08 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Are we ever going to learn?
AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM _______________________________________________ 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
The sad part is the worst offenders are repeat offenders. They aren't people who are new to satellites. They aren't people new to ham radio. They are experienced operators who refuse to accept any responsibility when it comes to their poor operating practices.
Publishing their call signs on the front cover of QST wouldn't matter because the worst, repeat offenders simply refuse to acknowledge the problem. They live along a river known as DENIAL.
Occasionally many of us, myself included, are caught running too much uplink power. Perhaps it's a high elevation pass. As Paul N8HM pointed out, sometimes 5 watts into an Arrow is too much!
73, Clayton W5PFG
On 8/3/2015 23:10, Gary Mayfield wrote:
If you could copy the cq could you copy the call?
At 432 MHz the AO-7 uplink is actually in the weak signal part of the band. It is very possible a weak signal station unknowingly did this...
A friendly email to the station may help!
73, Joe kk0sd
-----Original Message----- From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Paul Stoetzer Sent: Monday, August 03, 2015 4:08 PM To: amsat-bb@amsat.org Subject: [amsat-bb] Are we ever going to learn?
AO-7 was sounding pretty good. Very strong signals over North America around 2200Z, I was having a nice QSO with KC4LE, reducing my power to 1 watt when my signal started to warble a bit, until someone started CQing in CW with such a strong signal that the whole passband was pulsing up and down. Eventually the Mode B transponder shut off under the strain.
Using excessive power on a linear transponder is a violation of two sections of Part 97: using minimum power necessary to complete the communcations and causing harmful interference to other stations. We need an ARRL OO to listen to a few passes and send some OO notices!
73,
Paul, N8HM _______________________________________________ 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 will say that I've almost pooped my pants once or twice when I realize I forgot to dial down the 736 after working a low pass or some terrestrial stuff and realize I'm putting out 10W or more to the satellite antennas thanks to your expert way of expressing the need to watch your power levels, Clayton! ;-)
Jerry Buxton, NØJY
On 8/4/2015 17:28, Clayton W5PFG wrote:
Occasionally many of us, myself included, are caught running too much uplink power. Perhaps it's a high elevation pass. As Paul N8HM pointed out, sometimes 5 watts into an Arrow is too much!
participants (6)
-
Clayton W5PFG -
Gary Mayfield -
Glen Zook -
Jerry Buxton -
Mvivona -
Paul Stoetzer