The 10-minute timer is documented here: https://www.amsat.org/two-way-satellites/so-50-satellite-information/ although I can see you might assume that the 10 minutes means "10 minutes with no use".
But I was always told "don't worry about the 10 minute timer--someone will have triggered it". Maybe the "someones" who used to trigger it frequently are using it less than they used to :-)
Burns
On Mon, Mar 25, 2019 at 2:03 PM Scott via AMSAT-BB amsat-bb@amsat.org wrote:
John,
I have noticed that over the last couple years. Have had to turn it back on during several passes. I never remember having to do that in the early years of the sat. Maybe it is showing its age.
73, Scott, KA7FVV Director - KBARA. kbara.org Alternate Board of Director - AMSAT amsat.org Co-Owner WA7DRE 443.525 System Fusion Repeater Co-Owner KA7FVV 147.320 KBARA Repeater ka7fvv.net
On Mar 25, 2019, at 08:15, John Brier johnbrier@gmail.com wrote:
This came up on Twitter recently. [1] When I first started using SO-50 I assumed once the transponder was turned on with the 74.4 Hz tone it would stay on as long as it was being used (people are uplinking with a 67 HZ tone), but in fact it turns off every 10 minutes regardless of activity.
If you ever hear it go silent in the middle of a busy pass try sending a 74.4 hz tone to reset the timer/turn the transponder back on.
73, John Brier KG4AKV
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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