Re: [Repeater-Builder] OT - funny interference story

2006-01-13 Thread Neil McKie

  Where I live - on a hill - if I have waterfront property, an awful 
 lot of other people will be very wet. 

  I'll try to get out to the garage today and look for you (radios) 
 and Mike P. (manual)

  Neil 


Paul Finch wrote:
 
 Neil,
 
 You keeping your head above water?  Send some of that rain this way!  2004
 we had one of the wettest years on record, 2005 is one of the driest!  Oh
 well, that why we love Texas, it's never the same and is always changing!
 
 To keep this on topic, did you have a chance to look for those radios?
 
 Paul
 
 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] Behalf Of Neil McKie
 Sent: Thursday, January 12, 2006 3:09 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: Re: [Repeater-Builder] Re: OT - funny interference story
 
   Especially when they are drunk.
 
   I suppose an opera being fed to your service monitor on the
  wireless mic frequency would do wonders to the Karaoke folks ...
 
   Neil
 
 skipp025 wrote:
 
   [EMAIL PROTECTED] wrote:
   Not very funny when you have to waste hours of time
   chasing these things down, knocking on doors 
   explaining to total strangers that they have a
   nuisance generator within their premises.
   Bob NO6B
 
  Try having your 222.6 repeater input frequency on a
  nation-wide wireless mic frequency.  Once again I'm
  getting Karaoke music into the repeater during open
  mic night.
 
  Sure is now making a frequency agile mic, which has
  the above frequency as a choice. I have to call the
  local bar and ask the music guy to pick another
  frequency.  What makes it so bad is that most people
  can't sing.
 
  skipp
 
 
 Yahoo! Groups Links
 
 
 Yahoo! Groups Links
 
 
 






 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




RE: [Repeater-Builder] OT - funny interference story

2006-01-12 Thread Paul Finch
Jay,

Nope, I thought there would be more on this message board that knew Walt, at
least his power supplies.  Sorry for this OT post.

Paul


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Jay Urish
Sent: Wednesday, January 11, 2006 11:33 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] OT - funny interference story


h Walt Whitman?


Paul Finch wrote:
 Hello,

 Another funny interference story, I may have put it on here before but it
 bears repeating.  One of the Police repeaters in the area that the shop I
 worked for and maintained was getting a stable, slightly off-frequency
 signal modulated with a 1000 Hz tone but without CTCSS.  It did not key up
 the repeater but interfered a lot with the HT's they were using.  This had
 been going on for 2 or 3 days.  The FCC was called and could not find it.
 The manager of the Water Department was a Ham and knew of another Ham that
 made a hobby of finding these problems.  This guy had a van with a 22
 element home made Yagi mounted on the top with a shaft going down into the
 cab, he used a pair of Vice Grips as a handle!  Anyone know who this Guy
 is?  He is also famous for the power supplies he builds.



--
Jay Urish W5GM
DCARA President ARRL Life Member
TXFCA President ERS Vice-Prez
Denton County ARRL VEC
N5ERS VP/Trustee

Monitoring 1292.30Ghz PL-100.0  441.375 PL-88.5 and 444.850 PL-88.5





Yahoo! Groups Links













 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [Repeater-Builder] OT - funny interference story

2006-01-12 Thread DCFluX



I finaly tracked down the .64 Beast after searching for 3+ years. My uncle broke down and drug out his IFR.

It was a combination of a switch mode battery charger in a boat about
300 feet from the antenna to give me a perfect mix 600kHz off the
transmit frequency, lower side band of course (still trying to figure
that one out) that was so good that it would cause the repeater to
occasionally feedback audio wise. Also some loose PL-259s on the
capacitance stubs of the WP-639 duplexer causeing some desence after
the inital problem was cured. 

Repeater was clocked at -121.5dB to open the squelch with no desense at
110W from the transmitter. Compare that to running at 5 watts to try to
beat the mix and it still sounded like crap.

Things are so good I am going to upgrade the antenna back to the
station master clone after I rebuild it. Having proper test equipment
makes all the difference in the world.On 1/12/06, Paul Finch [EMAIL PROTECTED] wrote:
Jay,Nope, I thought there would be more on this message board that knew Walt, atleast his power supplies.Sorry for this OT post.Paul-Original Message-From: 
Repeater-Builder@yahoogroups.com[mailto:Repeater-Builder@yahoogroups.com]On Behalf Of Jay UrishSent: Wednesday, January 11, 2006 11:33 PMTo: 
Repeater-Builder@yahoogroups.comSubject: Re: [Repeater-Builder] OT - funny interference storyh Walt Whitman?Paul Finch wrote: Hello, Another funny interference story, I may have put it on here before but it
 bears repeating.One of the Police repeaters in the area that the shop I worked for and maintained was getting a stable, slightly off-frequency signal modulated with a 1000 Hz tone but without CTCSS.It did not key up
 the repeater but interfered a lot with the HT's they were using.This had been going on for 2 or 3 days.The FCC was called and could not find it. The manager of the Water Department was a Ham and knew of another Ham that
 made a hobby of finding these problems.This guy had a van with a 22 element home made Yagi mounted on the top with a shaft going down into the cab, he used a pair of Vice Grips as a handle!Anyone know who this Guy
 is?He is also famous for the power supplies he builds.--Jay Urish W5GMDCARA President ARRL Life MemberTXFCA President ERS Vice-PrezDenton County ARRL VECN5ERS VP/Trustee
Monitoring 1292.30Ghz PL-100.0441.375 PL-88.5 and 444.850 PL-88.5Yahoo! Groups LinksYahoo! Groups Links* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]* Your use of Yahoo! Groups is subject to:http://docs.yahoo.com/info/terms/















  




  
  
  YAHOO! GROUPS LINKS



  Visit your group "Repeater-Builder" on the web.
  To unsubscribe from this group, send an email to:[EMAIL PROTECTED]
  Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.



  









RE: [Repeater-Builder] OT - funny interference story

2006-01-12 Thread N9WYS
I have heard about video distribution amplifiers doing similar things,
especially if the open connections are not terminated properly.  (i.e. 50
ohm resistor/F-connector)

A complex in southwest suburban Chicago area had the local police searching
for several days before the ham found the source and disconnected it.

Mark -N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: Thursday, January 12, 2006 1:26 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] OT - funny interference story

At 1/11/2006 13:48, you wrote:

We then went to the apartment across the hall. No one was home, so the 
apartment Manager opened the door with his master key, and we all went in. 
The first thing we tried was unplugging the aquarium heater, since they're 
often such a terrible electrical noise maker, but the signal was still 
there. Nothing else that we unplugged seemed to make the interfering 
signal stop, until we unplugged one AC cord going to something on the 
stereo system. It was an amplified FM antenna, which was a unit about a 
foot tall. The gain control on it was cranked up to about 8 out of 10, 
causing it to go into oscillation and radiate over a wide area. The FCC 
Inspector unplugged it completely, coiled up the AC power cord, and left 
it on a living room chair with some very important-looking paperwork which 
basically said DO NOT USE, CONTACT US IMMEDIATELY. The apartment 
manager promised to follow up with the owner of the unit with the details 
of our visit.

The problem never returned!

I think this particular problem is rather widespread.  A couple of years 
ago one showed up on my 440 MHz repeater input.  It was a mile away from 
the input RX site.  Same thing: indoor amplified antenna.  Another one 
occasionally shows up on my output.  I've DF'd that one down to about a 4 
house area but haven't found the exact house yet.  Fortunately it's been 
gone for a while now.  I also have a user that complains about an 
occasional dead carrier on my output when driving through a particular
area.

Not very funny when you have to waste hours of time chasing these things 
down, knocking on doors  explaining to total strangers that they have a 
nuisance generator within their premises.

Bob NO6B






 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




[Repeater-Builder] OT - funny interference story

2006-01-12 Thread Paul Finch
Neil,

You keeping your head above water?  Send some of that rain this way!  2004
we had one of the wettest years on record, 2005 is one of the driest!  Oh
well, that why we love Texas, it's never the same and is always changing!

To keep this on topic, did you have a chance to look for those radios?

Paul


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Neil McKie
Sent: Thursday, January 12, 2006 3:09 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: OT - funny interference story



  Especially when they are drunk.

  I suppose an opera being fed to your service monitor on the
 wireless mic frequency would do wonders to the Karaoke folks ...

  Neil

skipp025 wrote:

  [EMAIL PROTECTED] wrote:
  Not very funny when you have to waste hours of time
  chasing these things down, knocking on doors 
  explaining to total strangers that they have a
  nuisance generator within their premises.
  Bob NO6B

 Try having your 222.6 repeater input frequency on a
 nation-wide wireless mic frequency.  Once again I'm
 getting Karaoke music into the repeater during open
 mic night.

 Sure is now making a frequency agile mic, which has
 the above frequency as a choice. I have to call the
 local bar and ask the music guy to pick another
 frequency.  What makes it so bad is that most people
 can't sing.

 skipp







Yahoo! Groups Links













 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 





Re: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread [EMAIL PROTECTED]
Back around 1990, we were having a problem on VHF with an interfering signal 
that drifted ever so slowly back and forth across 2-Meters and the VHF business 
band. One of the radio techs in our radio shop had a 2-Meter Repeater nearby, 
which would wind up being keyed up for long periods of time with a dead carrier 
as this interfering signal slowly drifted across the repeater's input frequency.

He got out an IFR Service Monitor, and tracked the signal to an apartment 
building about two blocks away from the radio shop. He then contacted the FCC, 
and they contacted the apartment building Manager. We met about 9:00 A.M. a few 
days later, at the entrance to the apartment building with the apartment 
Manager, the FCC Inspector, and the IFR.

After contacting the residents that were still in the building (many had 
already left for work for the day), we went to the main electrical panel for 
the building and started shutting off circuit breakers to sections of the 
building. One breaker made the interfering signal go away, so that narrowed it 
down to just a few apartments on one upper floor.  

We knocked on the door of the first apartment, and the Resident let us in after 
the apartment Manager explained who we all were, and what we were looking for. 
We unplugged just about everything in the apartment, but the signal remained. 

We then went to the apartment across the hall. No one was home, so the 
apartment Manager opened the door with his master key, and we all went in. The 
first thing we tried was unplugging the aquarium heater, since they're often 
such a terrible electrical noise maker, but the signal was still there. Nothing 
else that we unplugged seemed to make the interfering signal stop, until we 
unplugged one AC cord going to something on the stereo system. It was an 
amplified FM antenna, which was a unit about a foot tall. The gain control on 
it was cranked up to about 8 out of 10, causing it to go into oscillation and 
radiate over a wide area. The FCC Inspector unplugged it completely, coiled up 
the AC power cord, and left it on a living room chair with some very 
important-looking paperwork which basically said DO NOT USE, CONTACT US 
IMMEDIATELY. The apartment manager promised to follow up with the owner of the 
unit with the details of our visit.

The problem never returned!

Larry






-Original Message-
From: JOHN MACKEY [EMAIL PROTECTED]
Sent: Jan 10, 2006 5:00 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] OT - funny interference story

This is a funny story from the Broadcast Engineering mail list...

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Ron Castro
Sent: Tuesday, January 10, 2006 12:31 PM
To: Broadcast Radio Technical Forum
Subject: Re: [RT] Re: Local interference issues and lawyers


We had a case many years ago here in Santa Rosa where an FM station moved 
its transmitter and a neighbor, who was a wealthy doctor, started 
complaining of major TV interference on all channels, and he demanded that 
the station stop transmitting and go away.  The station owner could see that 
doctor's TV antenna was in very poor condition, and he offered to replace it
for free, the was turned down.  The doctor complained bitterly and regularly 
to the FCC until an inspector finally came out.  The inspector pronounced 
the FM station clean, but he could see some other source of local 
interference in the area on his spectrum analyzer.  Turns out it was the 
doctor's Radio Shack pre-amp on his broken-down antenna that had gone into
self-oscillation and was cleaning out the whole neighborhood!

By this time, the FCC had such a craw-full of the doctor that they issued 
him an NAL for causing interference.

Ron Castro
Chief Technical Officer
Results Radio, LLC






 
Yahoo! Groups Links



 







 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Robert Guenther
Very Interesting







 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Tony VE6MVP
At 03:58 PM 2006-01-11 -0600, you wrote:

 Very Interesting

Agreed.   Anecdotes like this are always worth reading.

An excellent means of passing knowledge down the generations.

Tony (a newbieish ham)





 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 





RE: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Paul Finch
Hello,

Another funny interference story, I may have put it on here before but it
bears repeating.  One of the Police repeaters in the area that the shop I
worked for and maintained was getting a stable, slightly off-frequency
signal modulated with a 1000 Hz tone but without CTCSS.  It did not key up
the repeater but interfered a lot with the HT's they were using.  This had
been going on for 2 or 3 days.  The FCC was called and could not find it.
The manager of the Water Department was a Ham and knew of another Ham that
made a hobby of finding these problems.  This guy had a van with a 22
element home made Yagi mounted on the top with a shaft going down into the
cab, he used a pair of Vice Grips as a handle!  Anyone know who this Guy
is?  He is also famous for the power supplies he builds.

The Ham did what the FCC could not, he was able to see the direction of the
signal from the Repeater Site.  He took off in that direction with the FCC
in tow.  He located the building where it was coming from, the Motorola
manufacturing facility in Fort Worth, Texas.  The Guy took his portable
tracking unit with the FCC man again in tow and entered the building.  They
introduced themselves to the receptionist, about one minute later 5 or so
VP's appeared.  The guy was then released to find the interference.  They
got to the room where it was coming from, there was a Cushman CE-3 turned up
all the way (without the attenuator pad in-line) with a coax with the center
conductor exposed and wrapped around a broom handle and pointed out the
window directly toward the repeater site.

Do you think some Motorola employee got a ticket sometime?

Paul


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of
[EMAIL PROTECTED]
Sent: Wednesday, January 11, 2006 3:48 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] OT - funny interference story


Back around 1990, we were having a problem on VHF with an interfering signal
that drifted ever so slowly back and forth across 2-Meters and the VHF
business band. One of the radio techs in our radio shop had a 2-Meter
Repeater nearby, which would wind up being keyed up for long periods of time
with a dead carrier as this interfering signal slowly drifted across the
repeater's input frequency.

He got out an IFR Service Monitor, and tracked the signal to an apartment
building about two blocks away from the radio shop. He then contacted the
FCC, and they contacted the apartment building Manager. We met about 9:00
A.M. a few days later, at the entrance to the apartment building with the
apartment Manager, the FCC Inspector, and the IFR.

After contacting the residents that were still in the building (many had
already left for work for the day), we went to the main electrical panel for
the building and started shutting off circuit breakers to sections of the
building. One breaker made the interfering signal go away, so that narrowed
it down to just a few apartments on one upper floor.

We knocked on the door of the first apartment, and the Resident let us in
after the apartment Manager explained who we all were, and what we were
looking for. We unplugged just about everything in the apartment, but the
signal remained.

We then went to the apartment across the hall. No one was home, so the
apartment Manager opened the door with his master key, and we all went in.
The first thing we tried was unplugging the aquarium heater, since they're
often such a terrible electrical noise maker, but the signal was still
there. Nothing else that we unplugged seemed to make the interfering signal
stop, until we unplugged one AC cord going to something on the stereo
system. It was an amplified FM antenna, which was a unit about a foot tall.
The gain control on it was cranked up to about 8 out of 10, causing it to go
into oscillation and radiate over a wide area. The FCC Inspector unplugged
it completely, coiled up the AC power cord, and left it on a living room
chair with some very important-looking paperwork which basically said DO
NOT USE, CONTACT US IMMEDIATELY. The apartment manager promised to follow
up with the owner of the unit with the details of our visit.

The problem never returned!

Larry






-Original Message-
From: JOHN MACKEY [EMAIL PROTECTED]
Sent: Jan 10, 2006 5:00 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] OT - funny interference story

This is a funny story from the Broadcast Engineering mail list...

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Ron Castro
Sent: Tuesday, January 10, 2006 12:31 PM
To: Broadcast Radio Technical Forum
Subject: Re: [RT] Re: Local interference issues and lawyers


We had a case many years ago here in Santa Rosa where an FM station moved
its transmitter and a neighbor, who was a wealthy doctor, started
complaining of major TV interference on all channels, and he demanded that
the station stop transmitting and go away

RE: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Richard
I concur... This is one of the most interesting groups I've had the pleasure
of participating in. Indeed, a rare collection of talent in this group.

Fairly new to the world of repeaters,

Richard, N7TGB

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Tony VE6MVP
Sent: Wednesday, January 11, 2006 2:32 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] OT - funny interference story


At 03:58 PM 2006-01-11 -0600, you wrote:

 Very Interesting

Agreed.   Anecdotes like this are always worth reading.

An excellent means of passing knowledge down the generations.

Tony (a newbieish ham)






Yahoo! Groups Links

















 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 





Re: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Charles Miller

- Original Message - 
From: Paul Finch [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 11, 2006 9:53 PM
Subject: RE: [Repeater-Builder] OT - funny interference story



 Anyone know who this Guy is?  He is also famous for the power supplies
he builds.


Name: Walt Wiederhold
CALL: W5OGZ
Status: SK

  W5OGZ is the club station of the Texas VHF-FM Society, Inc. The
Society has, for over 40 years, served as the frequency coordination body
for the state of Texas. The callsign commemorates Walt Wiederhold, who
served for many years as the state frequency coordinator. More information
on the Society, and on Walt, can be found at the Society's web site at
http://www.txvhffm.org .


Charles Miller
Life Member
Texas VHF-FM Society





 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 





RE: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Paul Finch
Charles,

No, it is a Walt though and he's not a SK.

Paul


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of Charles Miller
Sent: Wednesday, January 11, 2006 10:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] OT - funny interference story



- Original Message -
From: Paul Finch [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 11, 2006 9:53 PM
Subject: RE: [Repeater-Builder] OT - funny interference story



 Anyone know who this Guy is?  He is also famous for the power supplies
he builds.


Name: Walt Wiederhold
CALL: W5OGZ
Status: SK

  W5OGZ is the club station of the Texas VHF-FM Society, Inc. The
Society has, for over 40 years, served as the frequency coordination body
for the state of Texas. The callsign commemorates Walt Wiederhold, who
served for many years as the state frequency coordinator. More information
on the Society, and on Walt, can be found at the Society's web site at
http://www.txvhffm.org .


Charles Miller
Life Member
Texas VHF-FM Society






Yahoo! Groups Links














 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread Jay Urish
h Walt Whitman?


Paul Finch wrote:
 Hello,
 
 Another funny interference story, I may have put it on here before but it
 bears repeating.  One of the Police repeaters in the area that the shop I
 worked for and maintained was getting a stable, slightly off-frequency
 signal modulated with a 1000 Hz tone but without CTCSS.  It did not key up
 the repeater but interfered a lot with the HT's they were using.  This had
 been going on for 2 or 3 days.  The FCC was called and could not find it.
 The manager of the Water Department was a Ham and knew of another Ham that
 made a hobby of finding these problems.  This guy had a van with a 22
 element home made Yagi mounted on the top with a shaft going down into the
 cab, he used a pair of Vice Grips as a handle!  Anyone know who this Guy
 is?  He is also famous for the power supplies he builds.
 


-- 
Jay Urish W5GM
DCARA President ARRL Life Member
TXFCA President ERS Vice-Prez
Denton County ARRL VEC
N5ERS VP/Trustee

Monitoring 1292.30Ghz PL-100.0  441.375 PL-88.5 and 444.850 PL-88.5




 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 




Re: [Repeater-Builder] OT - funny interference story

2006-01-11 Thread no6b
At 1/11/2006 13:48, you wrote:

We then went to the apartment across the hall. No one was home, so the 
apartment Manager opened the door with his master key, and we all went in. 
The first thing we tried was unplugging the aquarium heater, since they're 
often such a terrible electrical noise maker, but the signal was still 
there. Nothing else that we unplugged seemed to make the interfering 
signal stop, until we unplugged one AC cord going to something on the 
stereo system. It was an amplified FM antenna, which was a unit about a 
foot tall. The gain control on it was cranked up to about 8 out of 10, 
causing it to go into oscillation and radiate over a wide area. The FCC 
Inspector unplugged it completely, coiled up the AC power cord, and left 
it on a living room chair with some very important-looking paperwork which 
basically said DO NOT USE, CONTACT US IMMEDIATELY. The apartment 
manager promised to follow up with the owner of the unit with the details 
of our visit.

The problem never returned!

I think this particular problem is rather widespread.  A couple of years 
ago one showed up on my 440 MHz repeater input.  It was a mile away from 
the input RX site.  Same thing: indoor amplified antenna.  Another one 
occasionally shows up on my output.  I've DF'd that one down to about a 4 
house area but haven't found the exact house yet.  Fortunately it's been 
gone for a while now.  I also have a user that complains about an 
occasional dead carrier on my output when driving through a particular area.

Not very funny when you have to waste hours of time chasing these things 
down, knocking on doors  explaining to total strangers that they have a 
nuisance generator within their premises.

Bob NO6B






 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/
 





[Repeater-Builder] OT - funny interference story

2006-01-10 Thread JOHN MACKEY
This is a funny story from the Broadcast Engineering mail list...

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Ron Castro
Sent: Tuesday, January 10, 2006 12:31 PM
To: Broadcast Radio Technical Forum
Subject: Re: [RT] Re: Local interference issues and lawyers


We had a case many years ago here in Santa Rosa where an FM station moved 
its transmitter and a neighbor, who was a wealthy doctor, started 
complaining of major TV interference on all channels, and he demanded that 
the station stop transmitting and go away.  The station owner could see that 
doctor's TV antenna was in very poor condition, and he offered to replace it
for free, the was turned down.  The doctor complained bitterly and regularly 
to the FCC until an inspector finally came out.  The inspector pronounced 
the FM station clean, but he could see some other source of local 
interference in the area on his spectrum analyzer.  Turns out it was the 
doctor's Radio Shack pre-amp on his broken-down antenna that had gone into
self-oscillation and was cleaning out the whole neighborhood!

By this time, the FCC had such a craw-full of the doctor that they issued 
him an NAL for causing interference.

Ron Castro
Chief Technical Officer
Results Radio, LLC






 
Yahoo! Groups Links

* To visit your group on the web, go to:
http://groups.yahoo.com/group/Repeater-Builder/

* To unsubscribe from this group, send an email to:
[EMAIL PROTECTED]

* Your use of Yahoo! Groups is subject to:
http://docs.yahoo.com/info/terms/