Hi MaK, I'm not so sure a BLACK LIST is the way to go, however, we most certainly DO! need to be aware of the "alligator" ... (all mouth and no ears) ... problem on AO-7. I read quite recently a post on the Amsat-bb wherea particular station was "explaining" that one *NEEDS* a linear amplifier to work AO-7.
Absolutely *not* true ... (using an aerial !!!!! might have helped.....LA2QAA & GM1SXX).
Of course, today's FM'ing on AO-7 *may* have been due to ignorance, not deliberate QRM, we'll never know but we should !!! encourage people to LISTEN before transmitting ... after all, it *IS* full duplex.
I'd suggest "education" to be a better alternative than a"black list" ... Alligators will always! be with us with the "mine's bigger than yours!" menality.
A re-read of the recommended operating proceedure would do no harm. This applies to *ALL* satellites.
PS.
LA2QAA and GM1SXX will soon be publishing an article suggesting a way to operate satellites for those amateurs who have severe aerial restrictions or who don't currently own the necessary equipment.
I will of course put a link to the article concerned on the EU-Amsat pages.
73 John. la2qaa@amsat.org
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From: SV1BSX sv1bsx@yahoo.gr Reply-To: eu-amsat@yahoogroups.com To: eu-amsat@yahoogroups.com Subject: Re: [eu-amsat] AO-7 Date: Wed, 25 Apr 2007 03:48:26 -0700 (PDT)
Hi John,
well, I suggest to make a BLACK LIST (and publish that anywhere, like Amsat-BB etc ).
Why not?
This way I believe that, every LID(= bad-operator) will be more careful in order to avoid the LIST!
After the closed-down of FO-29, we have to care much more about AO-7's good-health.
73, Mak SV1BSX
--- John Hackett archie.hackett@hotmail.com wrote:
Hi All, Somebody knocking 10 kinds of the brown stuff out of AO-7 this morning on orbit 48458.
Careful !! with the power chaps or we'll lose this one as well.
The recommended operating proceedure can be found at ...
http://www.planetemily.com/ao7/ao7log.php Just click on "Using AO-7".
The more potential new users who are aware that you *DON'T* need 100w to a 10 element beam, the more likely it is that AO-7 will continue to provide excellent analogue signals.
73 John. la2qaa@amsat.org
Quoting John Hackett archie.hackett@hotmail.com:
I read quite recently a post on the Amsat-bb
wherea particular station was "explaining" that one *NEEDS* a linear amplifier to work AO-7.
Absolutely *not* true ... (using an aerial !!!!! might have helped.....LA2QAA & GM1SXX).
We should note that the same problem seems to exist on VO-52, too. About a week ago I monitored a pass and was astonished to see a QSO in progress which was about 5 S-units above the beacon. As I was trying to figure out what was up, the conversation revealed all: the station producing this formidable signal explained that it has a 22x22 beam on an az/el rotor and was using 20W of uplink power! The returning station, rather than suggesting QRP, congratulated his partner on an "excellent, strong signal" (which happened to be FM'ing the beacon like crazy.)
As our station improves, we need to lower our uplink power to maintain the same EIRP. If you're a newcomer to the SSB/CW birds, don't let these concerns deter you from getting your feet wet: just listen for the beacon at the beginning of the pass, and start with a downlink signal about this level. Those of us who have become accustomed to satellite operation should have the courage to recommend lower power to those with whom we're conversing, and should, as always, strive to improve our reception.
73, Bruce VE9QRP
Bruce, As they say where I originally come from ... "good on yer mate"... (your posting did an old heart good).
Please read "HOW MUCH POWER IS ENOUGH" (part 1) at http://www.observations.biz/
73 John. la2qaa@amsat.org ..........................................................................................................................................
From: Bruce Robertson broberts@mta.ca Reply-To: brobertson@mta.ca To: la2qaa@amsat.org CC: amsat-bb@amsat.org Subject: QRP? Date: Wed, 25 Apr 2007 13:29:19 -0300
Quoting John Hackett archie.hackett@hotmail.com:
I read quite recently a post on the Amsat-bb
wherea particular station was "explaining" that one *NEEDS* a linear amplifier to work AO-7.
Absolutely *not* true ... (using an aerial !!!!! might have helped.....LA2QAA & GM1SXX).
We should note that the same problem seems to exist on VO-52, too. About a week ago I monitored a pass and was astonished to see a QSO in progress which was about 5 S-units above the beacon. As I was trying to figure out what was up, the conversation revealed all: the station producing this formidable signal explained that it has a 22x22 beam on an az/el rotor and was using 20W of uplink power! The returning station, rather than suggesting QRP, congratulated his partner on an "excellent, strong signal" (which happened to be FM'ing the beacon like crazy.)
As our station improves, we need to lower our uplink power to maintain the same EIRP. If you're a newcomer to the SSB/CW birds, don't let these concerns deter you from getting your feet wet: just listen for the beacon at the beginning of the pass, and start with a downlink signal about this level. Those of us who have become accustomed to satellite operation should have the courage to recommend lower power to those with whom we're conversing, and should, as always, strive to improve our reception.
73, Bruce VE9QRP
On 25 Apr 2007 at 13:29, Bruce Robertson wrote:
Quoting John Hackett archie.hackett@hotmail.com:
The returning station, rather than
suggesting QRP, congratulated his partner on an "excellent, strong signal" (which happened to be FM'ing the beacon like crazy.)
Situation 1
I try to use minimal power on VO-52 and FO-29 answering a CQ call with this absolute minimal power and this station never hear me. When i increased to maximum power he call me back with a S3 report!!!
Situation 2
A CW station was driving the sat power crazy i found some RX system are so poor the only one way they can achieve a QSO its in CW with all they can throw at it.
Is it a good idea to send a note to the culprit explaining them what they are doing or is it a futile action? I for one accept this kind of note but where to draw a line? A station with a super RX figure will say that all the stations are using too much power but what about those who should use medium power.
Suggestion!
When you are transmitting tune up and down the band and check what it is hapenning if you see the sat signal going down on each of your transmission it is probably an indication that something is wrong on your side and something have to be corrected.
Its an old problem but i found it is always the same stations who are causing theses problems. Are they seems to be concerned i think not even if we advise them.
Don't get me wrong it is very possible that each of us one day or another can also use too much power but if this happen on a regular basis we should act on it.
"-" "It is not the class of license the amateur holds, but the class of the amateur that holds the license."
Luc Leblanc VE2DWE Skype VE2DWE www.qsl.net/ve2dwe WAC BASIC CW PHONE SATELLITE
participants (3)
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Bruce Robertson -
John Hackett -
Luc Leblanc