[Scan-DC] dropped transmissions muttgummery
dewey3 at gmail.com
dewey3 at gmail.com
Sun Nov 18 19:18:07 EST 2018
Andy,
I don't know how closely you've watched RR, if at all, but I've been
watching reports on the SDS since it was released. I was all set to try one
out, but from the reports I've seen, I would bet my monitoring reputation
(for whatever that's worth) that the SDS have easily overloaded front ends,
and that **may** be a problem in this area. It appears that they really do
work miracles in areas that are not RF saturated, but what appears to be a
common thread in those who report monitoring problems appear to be in larger
metro areas and/or close to cell towers. I do know that there is someone in
the Baltimore area who has been happy with their SDS, but I'm unsure if it's
in Baltimore City, or more in the outlying Baltimore County. Just my
opinion, but based on the price, I'm sitting on the sidelines watching for
now.
Dewey
-----Original Message-----
From: scan-dc-bounces at mailman.qth.net <scan-dc-bounces at mailman.qth.net> On
Behalf Of Andrew Clegg
Sent: Sunday, November 18, 2018 19:06
To: Scan DC <scan-dc at mailman.qth.net>; Doug Kitchener <oldsdoug at yahoo.com>
Subject: Re: [Scan-DC] dropped transmissions muttgummery
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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