At 11:38 AM 08/07/10, you wrote:
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
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
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, August 07, 2010 1:38 PM
Subject: [Repeater-Builder] Pager interference
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
Subject: Re: [Repeater-Builder] Pager interference
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
1:38 PM
*Subject:* [Repeater-Builder] Pager interference
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).
Your email settings
This is a continuation of the repeater interference issue we started to have
last October. Maybe with a few new pieces of data, it'll spur some new
thoughts.
Background:
Last October, our repeater (146.850 MHz) started experiencing pager
interference. The interference can be clearly heard on
.
Just a thought.
Chuck
WB2EDV
- Original Message -
From: Mike Besemer (WM4B) mwbese...@cox.net
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, April 24, 2010 12:08 PM
Subject: [Repeater-Builder] Pager Interference Revisited
This is a continuation of the repeater interference
Subject: [Repeater-Builder] Pager Interference Revisited
This is a continuation of the repeater interference issue we started to
have
last October. Maybe with a few new pieces of data, it'll spur some new
thoughts.
Background:
Last October, our repeater (146.850 MHz) started experiencing
it. That spur ended up on our work
repeater output and we were 20 miles from that source.
Chuck
WB2EDV
- Original Message -
From: Mike Besemer (WM4B)
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, April 24, 2010 1:09 PM
Subject: RE: [Repeater-Builder] Pager Interference
On Sat, 24 Apr 2010, Mike Besemer (WM4B) wrote:
The issue disappeared over the winter months. If it's a hot, sunny
day you can be sure the problem will be present. A hot, cloudy day is
also a fairly good bet. Also, a cooler, sunny day will bring it out.
Cool and cloudy or cold and sunny
foxhunt maybe ?
To: Repeater-Builder@yahoogroups.com
From: mwbese...@cox.net
Date: Sat, 24 Apr 2010 13:09:08 -0400
Subject: RE: [Repeater-Builder] Pager Interference Revisited
That’s one I hadn’t thought of, Chuck. Definitely
...@yahoogroups.com] On Behalf Of Barry
Sent: Saturday, April 24, 2010 2:38 PM
To: repeater-builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Pager Interference Revisited
foxhunt maybe ?
_
To: Repeater-Builder@yahoogroups.com
From: mwbese...@cox.net
Date: Sat, 24 Apr 2010 13:09:08 -0400
- Jim W5ZIT
--- On Wed, 10/28/09, Mike Besemer (WM4B) mwbese...@cox.net wrote:
From: Mike Besemer (WM4B) mwbese...@cox.net
Subject: RE: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
To: Repeater-Builder@yahoogroups.com
Date: Wednesday, October 28, 2009, 7:03 PM
Subject: Re: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
Hello Mike.
The first clue is that the signal is moving up and down the 2 meter
band. This would tell me that something not frequency controlled is
causing the interference. Not frequency controlled would
...@yahoogroups.com] On Behalf Of MCH
Sent: Wednesday, October 28, 2009 11:51 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
I have to wonder how he can say his stuff is clean when this just
started a couple weeks ago. Did he
, October 28, 2009 12:28 PM
*Subject:* [Repeater-Builder] Pager Interference to 2-meter VHF
Public Service Band
A couple of weeks ago, our repeater system started to experience
interference from a paging system...
...one evening I tracked it from about 145.120
-level technicians with a clue about RF systems.
73,
Paul, AE4KR
- Original Message -
From: mailto:mwbese...@cox.netMike
To: mailto:Repeater-Builder@yahoogroups.comRepeater-Builder@yahoogroups.com
Sent: Wednesday, October 28, 2009 12:28 PM
Subject: [Repeater-Builder] Pager Interference to 2
Mike-
On Thu, 29 Oct 2009 05:33:10 -0500, Mike Besemer (WM4B)
mwbese...@cox.net wrote:
I was told (caveat) that he verified the spectrum after the interference
started. Since he's investing quite a bit of time into helping clear
this
up, I have to believe he's done that.
A
Mike Besemer (WM4B) wrote:
Joe,
The problem isn’t traffic dependant (10 am being a busy time), as I
monitor on and off all day and there is PLENTY of traffic all day
long. It seems to have more to do with temperature. You can clearly
hear the signals come on and fade off frequency
I had
On Thu, Oct 29, 2009 at 1:45 PM, Joe wrote:
Mike Besemer (WM4B) wrote:
Joe,
The problem isn’t traffic dependant (10 am being a busy time), as I
monitor on and off all day and there is PLENTY of traffic all day
long. It seems to have more to do with temperature. You can clearly
hear
A couple of weeks ago, our repeater system started to experience interference
from a paging system. The repeater is on 146.850 (-600 KHz), with the antenna
system about 120 feet up a water tower. The repeater itself is an Advanced
Communications System KRP-5000 running 35 watts through a set
There are at least two transmitters at two sites... not likely they're
all bad. But... the owner has assured me they're clean and I haven't
seen anything hokey on the spectrum analyzer from the repeater site.
Mike
WM4B
On Wed, Oct 28, 2009 at 2:46 PM, dmur...@verizon.net wrote:
Did you look a
28, 2009 1:28:56 PM
Subject: [Repeater-Builder] Pager Interference to 2-meter VHF Public Service
Band
A couple of weeks ago, our repeater system started to experience interference
from a paging system. The repeater is on 146.850 (-600 KHz), with the antenna
system about 120 feet up a water
with it and see what you find. Especially around 304.960
MHz which is the double of 152.480 MHz.
KC5DBH Matt
___
From: Mike mwbese...@cox. net
To: Repeater-Builder@ yahoogroups. com
Sent: Wed, October 28, 2009 1:28:56 PM
Subject: [Repeater-Builder] Pager Interference to 2
Dirty paging TX. Seen that many times.
Joe M.
Mike wrote:
A couple of weeks ago, our repeater system started to experience interference
from a paging system. The repeater is on 146.850 (-600 KHz), with the
antenna system about 120 feet up a water tower. The repeater itself is an
304.960
MHz which is the double of 152.480 MHz.
KC5DBH Matt
*From:* Mike mwbese...@cox.net
*To:* Repeater-Builder@yahoogroups.com
*Sent:* Wed, October 28, 2009 1:28:56 PM
*Subject:* [Repeater-Builder] Pager
, 2009 1:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
A couple of weeks ago, our repeater system started to experience
interference from a paging system. The repeater is on 146.850 (-600 KHz),
with the antenna system about
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 28, 2009 12:28 PM
Subject: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
A couple of weeks ago, our repeater system started to experience
interference from a paging system...
...one evening I tracked
@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Paul Plack
Sent: Wednesday, October 28, 2009 6:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
Mike,
If it moves around based on time of day, my
] On Behalf Of Kevin King
Sent: Wednesday, October 28, 2009 6:02 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
I would look at the exciter freq on the uhf paging transmitter.
It would help with some info
motivating.
- Original Message -
From: Mike Besemer (WM4B)
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 28, 2009 5:34 PM
Subject: RE: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
I'm with ya on your third paragraph. We've worked
Sent: Wednesday, October 28, 2009 7:48 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Pager Interference to 2-meter VHF Public
Service Band
Mike, the interference is clearly not caused by your own rusty roof, and is
both eggregious and easily documented. I know we
Hello Mike.
The first clue is that the signal is moving up and down the 2 meter
band. This would tell me that something not frequency controlled is
causing the interference. Not frequency controlled would mean that the
transmitter is not crystal or GPS locked to a specific frequency. Now,
...@cox.net
*To:* Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder@yahoogroups.com
*Sent:* Wednesday, October 28, 2009 12:28 PM
*Subject:* [Repeater-Builder] Pager Interference to 2-meter VHF
Public Service Band
A couple of weeks ago, our repeater
*Sent:* Wednesday, October 28, 2009 12:28 PM
*Subject:* [Repeater-Builder] Pager Interference to 2-meter VHF
Public Service Band
A couple of weeks ago, our repeater system started to experience
interference from a paging system...
...one evening I tracked
: There is some software that allows finger printing of a transmission
: base on the lockup signature and oscillator stability as seen on the
: transmitted signal.
I am interested in such things! Anyone have any good suggestions or input
regarding software or systems?
Kurt
On Wed, 28 Oct 2009, Facility 406 DM09 wrote:
I am interested in such things! Anyone have any good suggestions or
input regarding software or systems?
Cavity - digital storage oscilliscope.
--
Kris Kirby, KE4AHR
Disinformation Analyst
I'd use a really fast spectrum analyzer, meaning an analog one and
point a video camera at it
On Wed, Oct 28, 2009 at 10:19 PM, Kris Kirby k...@catonic.us wrote:
On Wed, 28 Oct 2009, Facility 406 DM09 wrote:
I am interested in such things! Anyone have any good suggestions or
input regarding
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