Allen County Amateur Radio Technical Society
443.80 Repeater Information
N 41 05.67 W 85
The 443.800 system is a carrier-access
repeater located at the site of WANE-TV on West
State Blvd in Fort Wayne. Itís antenna is side
the 600 foot level of the 855 foot tower.
Equipment. The equipment presently in use
is a GE Master II commercial solid-state repeater,
with a receiver having approximately 0.18 uV
sensitivity for 20 db quieting, and a 60 watt
output transmitter which produces a maximum
effective radiated power of 130 watts from the
antenna. The typical usable range to a 10-watt
mobile rig is 25-30 miles
Antenna System. The antenna is a Tri-Band fiberglass-covered collinear, being fed by 7/8
inch foam dielectric, solid aluminum jacketed
hard-line. The repeater uses a Phelps-Dodge 6
cavity duplexer to allow simultaneous transmission
and reception on a single antenna (full-duplex
operation). The duplexer provides under 1 dB of
insertion loss while maintaining more than 120 dB
of isolation between transmitter and receiver.
Timeout: The "you talked too
long" timeout is 90seconds
Reset: The system timeout timer resets when
the input signal ceases for at least 1 sec, which
is indicated by a 15 ms tone burst.
Dropout Delay. The transmitter drops out
after an input signal has been absent for 3.5 seconds.
Autopatch. Approximately 90 seconds of
operation, starting at access, is available before
the patch times out and restores normal operation.
This timer may be extended once.