Re: [Repeater-Builder] Re: Strange Repeater Problem

2006-05-10 Thread no6b
At 5/8/2006 10:45, you wrote:
--- In Repeater-Builder@yahoogroups.com, Bob Dengler [EMAIL PROTECTED] wrote:
 
  At 5/4/2006 08:38 AM, you wrote:
 
   I hope someone can shed some light on this?
   
If I have my repeater at home it works with 30 Watts out now
problem.
When I bring it back to the repeater site I have to lower it to 5-10
Watts because I get RF feedback to the radio.  It just sounds
like the
squelch is always open.
   
Motorola Mitrek modified for duplex
Coax is the same at both locations, LMR400
   
Antenna is the only thing that is different, using a fiberglass
Alpha
 
  If the repeater site is shared, there's lots of other
equipment/antennas up
  there as well.  Any switching power supplies, video cameras or TV
  transmitters at the site?
 
  Bob NO6B
 


The repeater site is not shared. I have now tried everything I
possibly could think of.  I replaced the coax from the duplexer to the
radio, encased the radio in a thick metal box, replaced coax, replaced
antenna.  Still the same thing.  So I am led to believe that the
repeater site itself is receiving some sort of interferance?

I assume from your description of the problem that the interfering signal 
is only present on your input when your repeater TX is up.  You may need to 
take an RF-bulletproof RX  Yagi to the site  DF the source of the mix 
while your repeater is TXing.

Bob NO6B






 
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[Repeater-Builder] Re: Strange Repeater Problem

2006-05-08 Thread atms169
--- In Repeater-Builder@yahoogroups.com, Bob Dengler [EMAIL PROTECTED] wrote:

 At 5/4/2006 08:38 AM, you wrote:
 
  I hope someone can shed some light on this?
  
   If I have my repeater at home it works with 30 Watts out now
problem.
   When I bring it back to the repeater site I have to lower it to 5-10
   Watts because I get RF feedback to the radio.  It just sounds
like the
   squelch is always open.
  
   Motorola Mitrek modified for duplex
   Coax is the same at both locations, LMR400
  
   Antenna is the only thing that is different, using a fiberglass
Alpha
 
 If the repeater site is shared, there's lots of other
equipment/antennas up 
 there as well.  Any switching power supplies, video cameras or TV 
 transmitters at the site?
 
 Bob NO6B



The repeater site is not shared. I have now tried everything I
possibly could think of.  I replaced the coax from the duplexer to the
radio, encased the radio in a thick metal box, replaced coax, replaced
antenna.  Still the same thing.  So I am led to believe that the
repeater site itself is receiving some sort of interferance?












 
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Re: [Repeater-Builder] Re: Strange Repeater Problem

2006-05-08 Thread Steve Bosshard (NU5D)



I remember PC's radiating a very strong signal at 462.000 - was really noticable at a local hospital. ssbOn 5/8/06, atms169 
[EMAIL PROTECTED] wrote:--- In 
Repeater-Builder@yahoogroups.com, Bob Dengler [EMAIL PROTECTED] wrote: At 5/4/2006 08:38 AM, you wrote:  I hope someone can shed some light on this? If I have my repeater at home it works with 30 Watts out now
problem.   When I bring it back to the repeater site I have to lower it to 5-10   Watts because I get RF feedback to the radio.It just soundslike the   squelch is always open.
 Motorola Mitrek modified for duplex   Coax is the same at both locations, LMR400 Antenna is the only thing that is different, using a fiberglass
Alpha If the repeater site is shared, there's lots of otherequipment/antennas up there as well.Any switching power supplies, video cameras or TV transmitters at the site?
 Bob NO6BThe repeater site is not shared. I have now tried everything Ipossibly could think of.I replaced the coax from the duplexer to theradio, encased the radio in a thick metal box, replaced coax, replaced
antenna.Still the same thing.So I am led to believe that therepeater site itself is receiving some sort of interferance?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/
-- Ham Radio Spoken Here.NU5D














  




  
  
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