If you would settle for a 2C, I think I have one. Are you looking for UHF or
VHF?
Bill N4XIR
From: steve w4...@localnet.com
To: Repeater-Builder@yahoogroups.com
Sent: Fri, August 6, 2010 9:19:59 PM
Subject: [Repeater-Builder] Re: RE:Mastr II drift problem
This did help! Now I found the missing 40 dB... I posted some pics:
Duplexer pics
http://conturafm.mine.nu/photo/photo_thumb.php?dir=68616d726164696f2f72\
657065617465722f6475706c657865722f41464c
In the folder pass-reject readjusted there's a picture of the view
with the 40 dB hidden and how it
Norm,
I doubt it. The GMN6147B mike that is specified for the MTR2000 station is
an optional mike for the MCS2000 mobile radio, which normally uses HMN4069E,
HMN4072E, or NMN6210D mikes. Since these mikes are not used on MaxTrac,
GM300, or M1225 mobile radios, there is likely to be a
Hi, I've got a new pager issue that has come up on a tower where we have a VHF
repeater. It's about 400 watts erp and 15 feet horizontal distance and 4.3 and
4.7 MHz away (it switches).
I'm thinking of using one bp/br can that will have the notch wide enough to
cover both channels and one pass
You may have to put a can on the pager transmitter. Pagers use square waves
which are very rich in harmonics and need to be filtered at the source. This
may be the only way to remove the problem. I speak from experience.
Jim wb5oxq in Waco
- Original Message -
From: Dwayne
To:
Hi Folks,
I got a couple of the large AGM batteries for
a solar installation, and was wondering if
there is any condition that will lead them
to vent inside the enclosure? They are sealed,
but probably have one-way valves.
Can I put the solar controller in the same
enclosure?
Figured some of
I would NEVER put any electronics in the battery enclosure. All batteries are
known to vent some vapor. Even very little acid or basic vapor will ruin the
electronics
Been there, have the ruined controller to prove it.
Ralph, W7HSG
- Original Message -
From: tahrens301 tahrens @
Those pager transmitter are painas some says.
we had a similar problem here some years ago,a telecom company installed a Big
Motorola Micor there
when installed suddently the radio-amateur received interference from it and
even the municipality office radio too and they said your are
Thanks for the input. I don't think that is possible (read practical) since
it's a two channel pager. The two pager frequencies are about 500 KHz apart. So
there is only one PA and one output in the pager box.
I may have to call DCI or someone to get a window filter.
Dwayne Kincaid
--- In
Agreed...
On the other hand as long as the charging voltage is not too high general
venting should not be a problem.
On Sat, Aug 7, 2010 at 4:20 PM, Ralph S. Turk w7...@comcast.net wrote:
I would NEVER put any electronics in the battery enclosure. All batteries
are
known to vent some
I am also somewhat hesitant to put any electronics in the same
enclosure, although the enclosure is well vented (with screens to
keep the buggies out).
I am using a 'Morningstar SunSaver-6 controller.
Tim
Hi,
I saw someone had used a HP3551A TIMS to set up repeater audio levels. I
have a used HP3551A also, but it recently stopped working. Wonder if anyone
had schematics? The manual I found online had everything but no schematics.
A good high resolution Jpeg photo of the schematics would be
Hello Dwayne,
I wonder if the paging company has made a change. Did they used to have
two separate transmitters, now only have one that switches frequencies?
This has been happening at sites since the pager population is
dwindling. Paging companies are taking advantage of the
Hi Kevin,
I have confirmed that 2 of the 4 finals are bad. both are on one side of
the push pull. Both open base connection One has collector to emitter short.
The other open emitter.
I have not yet checked the drivers I might be able to test them without
removal. I have a friend trying to
Joe,
Its a new pager that switches frequency, just recently put up. Fortunately,
we're all on good terms and yes, we're a freebie ham group. So that's why we
thought about a window filter for them to get it down 30 or 40 db and we'll do
the rest on our end.
The original question remains...
I have a brand new - never used - TLD 1693 VHF amp that I purchased as a
back up for a local club. I tried to find - buy - and substitute other
final transistors and discovered - there are no more around. They had
the MSR2000 repeater and this amp has the M1131 - M1133 - M1134
transistors in
Tim,
If your batteries are truly VRSLA/AGM (Valve-Regulated Sealed Lead-Acid,
Absorptive Glass Mat) units, you have nothing to worry about- IF the solar
charge controller is capable of controlling the charge energy going into the
battery bank. VRSLA batteries are designed so that the gases that
http://www.hparchive.com/Bench_Briefs/HP-Bench-Briefs-1980-07-08.pdf
bulletin from hp says the product may have had incorrect line fuse
if you want to fix it take the cover off and check some basics
many of the hp test equipment of this vintage needed power supply caps
--- In
Hello all,
A friend gave me his MVP UHF repeater to work on. The audio squelch board was
bad and I replaced it. I made what I HOPE was all the tracings and jumper
connections on this board by copying the old board. The problem is that there
is NO audio on the transmitter output when the
Ralph, I think Eric Lemmon has explained it very well...but I work for a large
telecommunications company here
in Canada and we put AGM / VRLA batteries in equipment cabinets all the time
and never had a problem.
They are mounted on a steel shelf with a rubber mat below them.
We do use very
Hello all,
I think I have the problem resolved! I went to the repeater site and modified
the plug that goes in to the exciter by putting two resistors and a jumper on
the plug to enable the compensate line. Gerald, AA4YQ told me about this. The
spare repeater I have here at home already had
Steve, that orange wire is Channel Guard disable. It goes to P1001, J910,
then to J1001 on the Channel Guard board.
73 John VE3AMZ
- Original Message -
From: steve w4...@localnet.com
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, August 07, 2010 8:08 PM
Subject:
Hi Peter,
I had my 3551 failed sometime ago, was intermittent connections in the unit,
just cleaned and reseated connectors and IC's, unit has worked fine since?
You may want to try it and see if it works.
From: Repeater-Builder@yahoogroups.com
Bill jawjabill...@... wrote:
Apparently no one here got the moto memo on working with
giant heat-sinks.
I never did during my tenure... memo's usually floated in
well after the fact or damage done...
First you only need a 30-40 watt iron to work on them
as moto did at the
Hi John,
I am certain this wire goes to the audio squelch board that is under the front
panelwhere does it hook up there??
73s
Steve
--- In Repeater-Builder@yahoogroups.com, John J. Riddell ve3...@... wrote:
Steve, that orange wire is Channel Guard disable. It goes to P1001, J910,
then
Thanks for the HP Bulletin. Long time since I''ve seen one of those (Used to
work for HP in the 1970's to 1980's). I have already fixed the 5V Power
supply and that was a shorted 390uf 20V Electrolytic cap. But the digital
display does not display either level or frequency, although the audio
Thanks Ralph,
On Sat, Aug 7, 2010 at 8:26 PM, Ralph S. Turk w7...@comcast.net wrote:
I will try to remember tomorrow to look. If you don't hear from me in a
day,
send me a email
Ralph
- Original Message -
From: petedcur...@gmail.com
To: Repeater-Builder
Correction, Error, I meant the normal float charging voltage is usually
about 13.65V NOT 12.65 V.
On Sat, Aug 7, 2010 at 9:42 PM, petedcur...@gmail.com wrote:
Hi,
Sealed Lead Acid Gel batteries do not vent under normal conditions.
Referring to 12 V batteries: Just make sure the maximum
Hi,
Sealed Lead Acid Gel batteries do not vent under normal conditions.
Referring to 12 V batteries: Just make sure the maximum charging voltage is
as per the batteries spec. (usually about 12.65V at 25deg C) My experience
is that even when they have been left erroneously charging continuously in
We use the 125ah gel cell in all the repeater cabinets and never had an issue.
Mike Mullarkey
303-736-9693
Sent from my iPhone
On Aug 7, 2010, at 6:16 PM, John J. Riddell ve3...@earthlink.net wrote:
Ralph, I think Eric Lemmon has explained it very well...but I work for a
large
Thanks all for the inputs.
These batteries are the 8A31DT, 'valve-regulated, Absorbed Glass Mat
Technology'
batteries. They recommend a 13.5 - 13.8v float voltage.
I will need to check with the Morningstar folks about this... there is
no provision
for adjusting that voltage (other than a
modified the plug that goes in to the exciter by putting
two resistors and a jumper on the plug to enable the
compensate line. Gerald, AA4YQ told me about this.
Could you please pass along the details of this mod, or point to a link
online?
Thanks...
Steve
sbjohns...@aol.com
It's on the page that I've posted the link to three times hoping
that Steve would look at it.
See this article http://www.repeater-builder.com/ge/m2icoms.html
Read the whole thing, and look for the paragraph that
starts There is one way to cheat
Mike WA6ILQ
At 09:38 PM 08/07/10, you wrote:
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