This may have been addressed earlier, and if so I apologize. A GE Mobile Mastr
II will generate an oscillation in the audio output stage if it is not loaded
at all times. I don't remember the beginning of this thread, but if you are
using a GE Mobile radio, this will wind up transmitting a
The old Alinco DR-590 generated a reverse burst. I could always tell when a
station was using one as the squelch noise went away immediately on a PL
controlled repeater.
73 - Jim W5ZIT
--- On Tue, 11/10/09, JOHN MACKEY jmac...@usa.net wrote:
From: JOHN MACKEY jmac...@usa.net
Subject: Re:
Looking for a Zetron model 19 or similar 2-tone store and forward device from
another manufacture.
Wow. I never knew that.
The HTX-202/404 HT's (and I think maybe the mobile rig of the same vintage
but I'm not sure on that one) from RadioShack do chicken burst (turn off
CTCSS then delay before turning off the transmitter) but it's not a true phase
reversal.
Nate WY0X
On Nov 11, 2009, at
Guys:
I happened across a DB404A (406-420 MHz) for the right price. I am interested
in converting this antenna to function as a 450-470 MHz antenna (model DB404B).
Has anyone done a conversion like this before? Common sense tells me that I
could be able to modify the size of the dipole
For those of us out here on the West (Left) Coast... PGE
our Electricity Provider has started their Smart Meter
program, where the meter reading will now be done by RF
Communications.
I had concerns about the equipment causing interference
so I called and received the following information.
In the example the most practical way to link the two
repeaters would be to install a single remote base radio
onto one of the repeaters. Connections and control are
simple...
s.
Jerry gdste...@... wrote:
There have been times when during events it would have been great if two
different
The elements are the easy part, as they can be shortened. The harness will
probably need to be replaced. That is a big excursion in frequency.
Chuck
WB2EDV
- Original Message -
From: jay2at434va j...@fieldcomm.org
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, November 11,
Jay
If your interested I have a harness for the 450 I beleive if wanted to swap.
Contact of net
Mike
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote:
The elements are the easy part, as they can be shortened. The harness will
probably need to be replaced. That is a
I am looking for a 2 meter fiberglass single band base station antenna for side
mounting on a tower.
If anyone has one contact of net
Thanks
Mike
basically as the title states. i have never heard of acssb outside of 220-222
mhz.
seems to me acssb was a good idea and was curious as to why the ham community
has not picked up on it for mobile HF SSB use.
seems to me having the benefits of SSB without the hassle of messing with a
clarifier
The demise of ACSSB in our area was the overall
range was limited to poor sensitivity relative to
a similarly situated uhf repeater.. Typical
sensitivity of the mobiles was .4-.5~.6uv or so
compared to sub .2uv on uhf and vhf fm mobiles
that were readily available.. Sound quality did not
Don't forget that the length of the coupling loops inside the cans contributes
to the overall length of the coax. Ideally you would have a quarter wave from
the Tee coupling the two sides of the duplexer together back to each can,
including coupling loops. The idea is to have the pass side
I used an in-band link to couple two VHF repeaters together, and have a Zetron
Z38A controller that allows me to terminate the repeaters transmitted tone as
soon as a user drops the input. That is all it took to keep the two repeaters
happy. I never did have much luck with two users talking
I was playing with the ideas of making adapters, but it is supprisingly
difficult to throw audio exactly 90 degrees out of phase over a broad
frequency range.
Anyway it might be practical to adopt the pilot tone to an HF radio. I'd
transmit a 100Hz pilot tone, or something that would go through
Skipp,
Isn't this close enough to PAVE PAWS to cause some problems? They basically
cleared the 440 band out...
Literally millions of transmitters potentially interfering with the RADAR...
Hmm. This sounds like it could get interesting.
Mark - N9WYS
-Original Message-
From:
More fun is to find the actual frequency.and leave your service monitor in
the generate mode on that one for a bit, should be fun :-)
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mark
Sent: Wednesday, November 11, 2009 7:17 PM
To:
They cleared out 440, but I didn't think they cleared out the 450-470
Land Mobile band, too, did they? Land Mobile uses much higher power TXs
which would be that much more of a problem than these flea power
transmitters.
Joe M.
Mark wrote:
Skipp,
Isn't this close enough to PAVE PAWS to
Sounds to me like having a friend in the shop at PGE will come in handy when
it's time to build short-hop links or a portable event repeater! - 73, Paul
AE4KR
- Original Message -
From: skipp025
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, November 11, 2009 11:02 AM
PGE has used UHF in their Gas Department since the late '50s/early '60s
simplex on 451.050Mc. when I lived there. The remote transmitter was on top of
Mt.San Bruno south of the city. I would think that their voice communications
are now trunked and, hopefully, at a better site but I wonder
Who's going to pay for it... you the customer
I don't imagine that it will take them very long to amortize that investment
considering the reduction in workforce...mainly meter readers, but office
personnel as well. I expect the data will go directly from reader/storage to
processing
On the upside, haven't seen a massive computer system that worked 100% right
yet... and I've worked on some with REALLY big budgets... so there'll be IT
jobs galore after they figure out it doesn't work right -- all the time... :-)
Perhaps a few RF-related jobs too, since that's really how they
450-470 MHz is alive and well and still full of public safety, business
and other users (including, of course GMRS and Family radios), and it
won't be going away anytime soon-every new allocation made by the FCC in
the future is liable to be broadband only so the channelized stuff has
to have a
At 09:28 PM 11/11/09, you wrote:
On the upside, haven't seen a massive computer system that worked
100% right yet... and I've worked on some with REALLY big
budgets... so there'll be IT jobs galore after they figure out it
doesn't work right -- all the time... :-)
Perhaps a few RF-related jobs
Hello,
I've try yesterday to update the firmware on my Motorola HT750 and right now
my radio is dead.
The original version was R05.09.11 and the wrong one was R05.14.03
Maybe someone in the group have hint for me?
Thank you.
Eric VE2VXT /VE7
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