Hi Patrick,

As you know, the spacecraft computers reset from time to time, usually due to radiation. Sometimes we go weeks between resets, sometimes seconds. This weekend both AO-91 and AO-92 had two resets each, with both coming back up in mode U/v.

73,

Alan WA4SCA

<-----Original Message----- <From: AMSAT-BB [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Patrick <STODDARD (WD9EWK/VA7EWK) <Sent: Sunday, January 06, 2019 21:33 PM <To: AMSAT amsat-bb@amsat.org <Subject: [amsat-bb] AO-92 not staying in L/V for 24 hours < <Hi! < <Twice this weekend, AO-92 failed to stay in L/V mode for <24 hours. When it was first commanded into L/V mode at <0138 UTC Sunday (Saturday evening in the USA): < <https://twitter.com/AMSAT/status/1081727139974729729 < <it only stayed in that mode for about 3 hours. By the time <AO-92 passed over the USA around 0450 UTC, it had switched <back to U/V mode. < <Mark N8MH reported on Twitter this morning that AO-92 was <put back into L/V mode at 1449 UTC: < <https://twitter.com/N8MH/status/1081938639930691584 < <and it was back to U/V this evening at 0248 UTC: < <https://twitter.com/WD9EWK/status/1082107763809873920 < <Before this weekend, I think there was one previous <occasion where AO-92 didn't remain in L/V mode for the <full 24 hours. Has something happened to the satellite, <where the mode change won't remain in effect for 24 <hours? < <73! < < < < <Patrick WD9EWK/VA7EWK <http://www.wd9ewk.net/ <Twitter: @WD9EWK or http://twitter.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