[Scan-DC] dropped transmissions muttgummery

Andrew Clegg andrew_w_clegg at hotmail.com
Sun Nov 18 19:05:33 EST 2018


I've noticed this with Arlington County on my HP-1. Some replies are completely missed. No garbled transmission, no static, no unit ID, nothing. Even when locked on a TG, as you say. I've always chalked it up to decoding problems. At my QTH, I have problems with dealing with multiple signals on their simulcast, as I'm up quite high with line-of-sight to more than one site.

The other thing I've noticed with the HP-1 is that very frequently the first few seconds of a longer transmission are clear, then 2 or 3 seconds are garbled or lost, then it decodes fine for the rest of the transmission. Seems to be a pattern. This occurs so often that I don't think it's my imagination. Of course, the most critical information is always during those 2-3 seconds that drop.

I've thought about getting one of the new "true I/Q" decoding scanners like the Uniden SDS100, as they are supposed to be better at dealing with simulcast interference and also weak signal situations. The $800 total all-in price tag is a bit of an eye-opener though.

I really miss good old-fashioned analog.

W4JE


________________________________
From: scan-dc-bounces at mailman.qth.net <scan-dc-bounces at mailman.qth.net> on behalf of Doug Kitchener via Scan-DC <scan-dc at mailman.qth.net>
Sent: Sunday, November 18, 2018 6:32 PM
To: Scan DC
Subject: [Scan-DC] dropped transmissions muttgummery

All,
Has anyone who listens to the muttgummery county trunked system noticed the occasional missed transmission - ie, a unit will apparently call in but you don't hear them call, but the dispatcher acknowledges them, or something similar?

A couple of us have noticed this occasionally, and it happens _even when your receiver is locked on a talkgroup_ - so it's not scanning delay or anything like that.  It also seems to happen with both Uniden and Radio Shack / GRE scanners... a couple of us have noticed this and were talking about it last night... not sure what to attribute it to... what... to...

anyone else?  any thoughts?
thx

1830, KGC-3............... 3 4
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