Here is one that drove me nuts for almost a week when I was still at
the city...
- Mountain-top radio site (1800' elev).
- 260-foot freestanding tower
- 8-bay uhf antenna on top platform
- Connected to a MSF2000 transmitter on the city's 453.xxx paging
freq and a Zetron digital paging
At 06:32 PM 1/12/2006 -, you wrote:
Apparently the 152 transmitter's signal was mixing with the 162 MHz
weather transmitter's signal, INSIDE OF MY TANK CIRCUIT of my UHF
paging transmitter !!!
---Yet more evidence why anyone who deploys a repeater without a
circulator should be summarily
I blow up circulators, try a shorted coaxial stub instead.On 1/12/06, Ken Arck [EMAIL PROTECTED] wrote:
At 06:32 PM 1/12/2006 -, you wrote:Apparently the 152 transmitter's signal was mixing with the 162 MHz
weather transmitter's signal, INSIDE OF MY TANK CIRCUIT of my UHFpaging transmitter
At some of the high level Metro Radio Sites with
mulitple Broadcast Stations going full tilt, you
can easily have a hundred watts or more of rf
comming back down the feed line.
You need the right size/type circulator. A shorted
coax stub is nice to have in addition to the circulator,
but you
I've had to send of and repair a 150W rated EMR circulator 5 times so
far, and it keeps blowing up. The last time it went it took the
transmitters power FET with it. VSWR on the antenna is near perfect
with 146 forward for 4 watts reflected. Transmitter runs fine on just
the antenna, but I can
At 01:59 PM 1/12/2006 -0700, you wrote:
I blow up circulators, try a shorted coaxial stub instead.
---Then you need a bigger load (don't we all!).
My Quintron UHF repeater has a dual stage circulator - the first load is
250 watts, the second is 10 watts and both are external.
My MastrII's
They blow up on the input port, output to load is always fine.On 1/12/06, Ken Arck [EMAIL PROTECTED] wrote:
At 01:59 PM 1/12/2006 -0700, you wrote:I blow up circulators, try a shorted coaxial stub instead.
---Then you need a bigger load (don't we all!).My Quintron UHF repeater has a dual stage
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