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To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, December 21, 2004 1:00 AM
Subject: Re: [Repeater-Builder] HELP: 2 meter repeater intermod problem from
pager transmitters
Maybe it's like a Grade A Ham? ;-
Joe M.
JOHN MACKEY wrote:
Hmmm, after 20 years of ham radio, past experience
At 12/20/2004 08:35 PM, you wrote:
We have 146.04/.64 repeater on a nearby mountain top. It worked
great for years with a range of 100 miles or more. Since the phone
company and a pager company installed their high power transmitters
near the site of the repeater (within 100 yards) the
We have 146.04/.64 repeater on a nearby mountain top. It worked
great for years with a range of 100 miles or more. Since the phone
company and a pager company installed their high power transmitters
near the site of the repeater (within 100 yards) the repeater is
virtually useless. After
-- Original Message --
Received: Mon, 20 Dec 2004 10:54:16 PM CST
From: kc4ih [EMAIL PROTECTED]
SNIP
virtually useless. After much head scratching I believe that the
difference in frequency of the pager transmitter of 600 khz is the
problem but have no idea how to solve the problem
PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, December 20, 2004 10:35 PM
Subject: [Repeater-Builder] HELP: 2 meter repeater intermod problem from
pager transmitters
We have 146.04/.64 repeater on a nearby mountain top. It worked
great for years with a range of 100 miles or more
Hmmm, after 20 years of ham radio, past experience in commercial 2 way
currently working as an Chief Engineer in the radio broadcast field and
possessing my Extra Amateur and GROL, I don't know what a FCC 1st class
licensed ham is!!
-- Original Message --
Received: Mon, 20 Dec 2004
And pray you don't cause interference with any other repeaters.
Joe M.
[EMAIL PROTECTED] wrote:
If all that fails then screw the repeater co-ordinator and change
your split.
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Ken,
Please advise exactly what frequencies these pager transmitters are
operating on. There are a number of possibilities for intermod, but
knowing the offending frequencies is crucial to a solution.
Less than a mile from my home station, there is a hilltop site at which
two high-power (3,500
Maybe it's like a Grade A Ham? ;-
Joe M.
JOHN MACKEY wrote:
Hmmm, after 20 years of ham radio, past experience in commercial 2 way
currently working as an Chief Engineer in the radio broadcast field and
possessing my Extra Amateur and GROL, I don't know what a FCC 1st class
licensed ham
Excellent reply, Eric.
I worked for several paging companies for about 10
years. Although several problems I found in the past
were caused by the paging company, just as many were
found to be shortcomings in the repeater equipment or
faulty hardware on the tower.
Like you said, we really
We have a problem here in Temple, Texas where one paging carrier operates a
152 system and another has 157 about a mile North of the 152 site. I cannot
remember the exact frequencies, but 3 times one minus 2 times the other hit
147.240. This only happened when both paging transmitters were
All paging transmitters involved should have narrow bandpass cavities
and circulators on their outputs. That's usually considered a must at
any site. If the paging company isn't willing to spend the money for
that, then they aren't to serious about staying in business.
The good news is that
You will find less and less narrow band cavities on paging transmitters
lately. As the paging industry slowly goes into their death spiral of
loosing customers, they no longer need 2, 4 or more transmitters at each
site to deal with the capacity of pagers out there. What some companies
are
Except that the vast majority of VHF transmitters/networks weren't
really capable of multi-freq on the fly as you describe. At least around
here, anyway, they were virtually all Micor PURC stations.
And most sites would not have allowed the transmitters to remain without
cavites anyway.
--
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To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] HELP: 2 meter repeater intermod problem from
pager transmitters
Except that the vast majority of VHF transmitters/networks weren't
really capable of multi-freq on the fly as you describe. At least around
here, anyway
The paging companies were more up to date here in the Northeast, Motorola
Nucleus and Glenayre/Quintron equipment. Some were capable of up to 16
frequencies in the same band.
Joe
At 10:23 AM 12/21/2004, you wrote:
Except that the vast majority of VHF transmitters/networks weren't
really
Joe,
Do you have any info on the Motorola Nucleus gear... I have a high power
PA for 900MHz that I thought about trying to make use of, but can find no
docs...
TIA,
mike
At 12:56 PM 12/21/2004 -0500, you wrote:
The paging companies were more up to date here in the Northeast, Motorola
Thanks a ton!! Not sure what I will use it for, thought of maybe
ATV (FM modulation scheme)repeater or something... in on 1.2 and out on
900. I didn't really give it much though, especially since the elusive
docs and what-not. I have a 75 watt PA for 800 from a Micor that I
had considered
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