A question to all you repeater guru's out there. Have a repeater in a high
noise environment at a large TV tower site. Lots of pagers, FM transmitters, 2
ways, etc on this tower. My Super Stationmaster 2 meter antenna is just 5 feet
away from a bed spring style 45 kw FM transmitter on 101.5 MHz. My repeater
is a Canadian mobile Micor along with Wacom duplexer and a circulator on Tx
side. Have a DB 4062 cavity can tuned to bandpass Rx between duplexer and
receiver. Works OK but the 1000 feet of 7/8 hard line has a great effect on
the Rx
side of the repeater. Also a new paging tenant might be blanking the Rx out
of my repeater. Putting the repeater at the base of the antenna is not
possible. I would like to improve the receive side of the repeater. Have the
following
equipment available:
Advanced Receiver Pre amp GaAsFET P144VDG
Telewave TWPC-1005-1 pass cavity 88 - 108 mhz
DB 4062 WC-B 143-156 mhz 6 can duplexer
Wacom 641 duplexer 4 can (second set)
Kay switchable attenuator pad
DCI bandpass 144-148 filter
DB 4048 cavity cans (2) from disassembled duplexer
What would be the best choice and hook up to increase the Rx sensitivity and
keep the noise out of the receiver? Any help would be really appreciated.
Gary K2UQ
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