Also, the interfering packet(I'm assuming you're talking about packet's attempting to get digi'd by ISS and PCSAT) won't get acknowledged(or processed as a packet) by HO-68 as the digi(BBS) callsign is incorrect. So, these would only effect someone in the immediate area of the offending unattended station, On the uplink only. On the other hand, I myself would of chose a different uplink frequency. I also agree it still looks like an overuse, and PL issue. When the newness wears off, HO-68 in FM mode will work just fine, except on FD :)
73 Jeff kb2m
-----Original Message----- From: amsat-bb-bounces@amsat.org [mailto:amsat-bb-bounces@amsat.org] On Behalf Of Andrew Glasbrenner Sent: Sunday, December 27, 2009 12:59 PM Cc: amsat-bb@amsat.org Subject: [amsat-bb] HO-68 145.825 uplink
Yesterday afternoon, Mark, N8MH and myself ran a little experiment on AO-51. We linked the SQRX receiver, listening on 145.825, to the 435.150 transmitter for several minutes over the eastern US. I wanted to see how congested the 145.825 uplink was with unattended packet beacons. We heard about a dozen packets, about two per minute. Most of them were not very strong.
The implication here is that HO-68 may be impacted by these unattended beacons while in FM/Packet mode, but not very much. Most users would have much stronger signals, and the interference is typically very short in duration. PL issues, and interference between the Voice and Packet system over densely populated areas is a separate issue.
73, Drew KO4MA _______________________________________________ Sent via AMSAT-BB@amsat.org. Opinions expressed are those of the author. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb