Just tried AO92 . The fading seams to be worse then ever! Every time I make a call the responding station gets caught in the fade. is there a way to combat this? I am running CP yagis. Jim
I listened to that last pass where you were having trouble copying calls. All signals were loud and clear for me with virtually no QSB. My max elevation was 20 degrees.
Glenn AA5PK
-----Original Message----- From: James Brown via AMSAT-BB Sent: Thursday, April 11, 2019 12:47 PM To: amsat-bb@amsat.org Subject: [amsat-bb] AO 92
Just tried AO92 . The fading seams to be worse then ever! Every time I make a call the responding station gets caught in the fade. is there a way to combat this? I am running CP yagis. Jim
What is your set-up? I’m just QRP portable and to deal with most fades, it’s just a simple matter to twist my Arrow antenna to keep up with the polarization. AO-91/92 are two of the easiest satellites to work with minimal equipment. Best of luck and 73.
Jeff WE4B
On Apr 11, 2019, at 12:47 PM, James Brown via AMSAT-BB amsat-bb@amsat.org wrote:
Just tried AO92 . The fading seams to be worse then ever! Every time I make a call the responding station gets caught in the fade. is there a way to combat this? I am running CP yagis. Jim _______________________________________________ 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: https://www.amsat.org/mailman/listinfo/amsat-bb
Look at this waveform from an AO-85 recording:
https://i.imgur.com/LNW4EP3.png
Every peak is a fade. They repeat approximately every 8 seconds through the entire pass. It seems to me this is due to tumbling. Depending on where you are you may not hear it. I assume the TX antenna is on the side of the sat opposite to you during the fade. Sometimes you get unlucky and you have to live with it. It's not a polarity switch due to the ionosphere.
Here is the audio recording that waveform is from:
https://www.dropbox.com/s/sfw0v9m01gnmipl/2017-07-09_-_2105_UTC_-_AO-85_KG4A...
73, John Brier KG4AKV
On Thu, Apr 11, 2019 at 2:30 PM Jeff Johns via AMSAT-BB amsat-bb@amsat.org wrote:
What is your set-up? I’m just QRP portable and to deal with most fades, it’s just a simple matter to twist my Arrow antenna to keep up with the polarization. AO-91/92 are two of the easiest satellites to work with minimal equipment. Best of luck and 73.
Jeff WE4B
On Apr 11, 2019, at 12:47 PM, James Brown via AMSAT-BB amsat-bb@amsat.org wrote:
Just tried AO92 . The fading seams to be worse then ever! Every time I make a call the responding station gets caught in the fade. is there a way to combat this? I am running CP yagis. Jim _______________________________________________ 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: https://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: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
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Glenn Miller - AA5PK -
James Brown -
Jeff Johns -
John Brier