Maybe awesome radios, one should try and get hold of the programing
software, it's a nightmare
Marcus
On Wed, Jun 23, 2010 at 3:03 AM, Tony KT9AC kt...@ameritech.net wrote:
Sorry, and apologies for the extra email, just wanted the info to be
complete.
The 3 near the end is the range -
Hi Group,
The first thing to monitor is the TX power does it drop when it locks up? After
years the GM300's are prone to problems with loose connectors dealing with temp
changes. Read the article on the repeater-builder's website concerning the
GM300 and Maxtrac about the VCO adjustments also
If you look at many commercial sites, many are pretty close together. I am not
saying that is good or bad, but apparently it works for them. Especially if it
is on different bands. You can take a close up look at our repeater(s) install;
My vote would be for folded dipole arrays. Sinclair, Comprod, Telewave and
Andrew make good ones. I have seen far too many failures with fiberglass
collinear antennas - lighting and particularly internal failure causing
untold noise generation to the repeater itself as well as to every radio
My choice would be the DB-224 type. Sid WA4VBC
--- In Repeater-Builder@yahoogroups.com, Chuck Kelsey wb2...@... wrote:
My vote would be for folded dipole arrays. Sinclair, Comprod, Telewave and
Andrew make good ones. I have seen far too many failures with fiberglass
collinear antennas -
This is a regular issue with many controllers, especially Trident
Raiders several Comm Spec units, and Motorola MTR-2000 repeaters.
Years ago Comm Spec supplied a small board that reset power to the
controller to eliminate the problem.
We installed power reset modules on all our repeaters,
Keep in mind the bandwidth of the antenna.
lh
On Wed, Jun 23, 2010 at 9:09 AM, Sid purvis...@yahoo.com wrote:
My choice would be the DB-224 type. Sid WA4VBC
--- In Repeater-Builder@yahoogroups.comRepeater-Builder%40yahoogroups.com,
Chuck Kelsey wb2...@... wrote:
My vote would be for
I'm assuming you mean the section of the particular band that a particular
model will cover. 'Most' folded dipole arrays and collinear fiberglass
manufacturers have models that cover the entire ham band in question, and then
some.
Chuck
WB2EDV
- Original Message -
From: Larry
Do you expect to EVER allow other, non-ham users, to multi-couple to this
antenna? Plan carefully.
If you anticipate to share, then the bandwidth become very important. For
example, a Sinclair 210C Series
antenna has a 36 mHz, 1.5:1 VSWR bandwidth, essentially covering the whole
VHF high band. A
Larry is correct.
My own personal hope and desire is that there will NOT be other users. Call me
greedy, I suppose, but the less RF at the site, the better.
However, the guy that posted the original question certainly needs to consider
the possibilities. (Sorry, don't remember his name - short
Understood Chuck. Depends on the circumstances. I know of a couple of ham
groups that have traded antenna
space for tower space. The tower owner gave them free space provided he
could multi-couple to that antenna. The
new systems at the site would be responsible for filtering. It was a win-win
and
You bet.
My main repeater site is one that I purchased. The only one that can throw
me off is my wife. LOL.
Chuck
WB2EDV
- Original Message -
From: Larry Horlick
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, June 23, 2010 10:24 AM
Subject: Re: [Repeater-Builder] Re: Antenna
Re: Motorola radios and Zetron 37
(reset timers for frozen controllers)
tracomm trac...@... wrote:
This is a regular issue with many controllers, especially Trident
Raiders several Comm Spec units, and Motorola MTR-2000 repeaters.
I have yet to find any type of relatively complex
My Tessco account rep emailed me that they're running a promotion this week
- free shipping. So if you're thinking about buying a big repeater antenna
or a reel of Heliax, save big money on truck freight if you order this week.
--- Jeff WN3A
Anyone familiar with this beast?
It was installed with a MastrII station, but it's putting out 16VDC.
It's a newer supply 3RU/Black Front. Looking inside I'm not seeing
many options for getting the voltage down.
Repeater-Builder.com has a couple of references to the Power Supply in
other
Hello again Sailors,
A friend sent this information to me and I thought it's well
worth passing along. I've removed some of the company name
specific portions.
Re: Counterfeit ICs
[pasted text below]
We had a meeting about this last week. The supply chain folks
were given some pretty
I'm looking for some Quantar engineering level help re: an
interesting simulcast issue.
I live in an area where I can hear several of high band our simulcast
Quantars. The whole thing was installed and set up by Motorola
including GPS stabilized time bases.
I'm monitoring with a true monitor:
Are the cables coming from the GPS reference are the same length at both sites?
Also if these are VHF it could be that the reference frequency
(channel spacing) is 5 kHz, if that is the case a harmonic of a paging
tone might get past the audio pass band filtering 300 - 3000 Hz
typically and is
wmhpowell w...@... wrote:
I'm looking for some Quantar engineering level help re: an
interesting simulcast issue.
Does it have to be Quantar?
I live in an area where I can hear several of high band our
simulcast Quantars. The whole thing was installed and set up
by Motorola
Are the cables coming from the GPS reference are the same
length at both sites?
Maybe I'm missing something here, but how the heck would the length of the
cable from the reference oscillator to the transmitter/exciter matter? It's
just the frequency reference (10 MHz or whatever) for the
Propagation delay in the coax.
Get a dual trace oscilloscope and feed it with a 10 MHz GPS, off of a
Tee and into 2 different lengths of coax.
I could see the DC offset thing if the audio was coupled with a 1uF
cap at one site and a 0.1uF at the other.
Maybe I'm missing something here, but how
wmhpowell wrote:
I'm looking for some Quantar engineering level help re: an
interesting simulcast issue.
I live in an area where I can hear several of high band our simulcast
Quantars. The whole thing was installed and set up by Motorola
including GPS stabilized time bases.
I'm monitoring
DCFluX wrote:
Are the cables coming from the GPS reference are the same length at both
sites?
This wouldn't matter at all. For frequency, it has no effect, and if the
GPS 1pps is being used for audio phase this would just offset the phase
as though the transmitter itself were moved by the
--- In Repeater-Builder@yahoogroups.com, wmhpowell w...@... wrote:
I'm looking for some Quantar engineering level help re: an interesting
simulcast issue.
...
Thanks,
Bill Powell
--
When you say this system was set up and installed
Propagation delay in the coax.
Propagation delay doesn't affect anything on the reference output side of
the GPSDO. The phase of the reference oscillator can vary -- the
synthesizer doesn't care about the phase of the reference oscillator, only
the frequency. Likewise, the VCO output isn't
Well if the transmitters are running at the same frequency but at a
different phase it is reasonable to expect that there would be some
point where the 2 transmitters are at close to the same power level,
but 180 degrees out of phase which should cancel out the receiver or
at least make
DCFluX wrote:
Well if the transmitters are running at the same frequency but at a
different phase it is reasonable to expect that there would be some
point where the 2 transmitters are at close to the same power level,
but 180 degrees out of phase which should cancel out the receiver or
at
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