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1.4 Specifications: PC-1000B
INPUT IMPEDANCE: 50 ohms.
LOAD IMPEDANCE: 2 to 25 ohms resistance, 200 to 1500 pF capacitance.
FREQUENCY: 190 - 625 KHz with a 200 to 1500 pF load.
POWER INPUT: Up to 500 watts peak, 200 watts continuous.
METERING: Antenna current and tuning. Single meter with a four
position switch; OFF, TUNE, HIGH, LOW. A reflected power measurement
is used for a tuning indication.
TUNING: Large coil with coarse taps and fine taps and a rotatable
shorted ring. The coarse tap is selected with a solder connection
behind a removable panel. The fine tap is selected with a switch.
The autotune system drives the shorted ring for exact tuning.
LIGHTNING PROTECTION:
Lightning gap at the antenna terminal.
Special passive circuit that protects the transmitter final amplifier
from lighting transients.
WORKING CONDITION: Ambient temperature, -50°C to 70°C; relative
humidity 0 to 100%; high salinity as encountered in offshore con-
ditions. The antenna coupler is designed for outdoor mounting at
the base of the antenna.
POWER REQUIREMENTS:
48V DC, 500 mA, supplied to coupler from
Southern Avionics transmitters. Optional 115/230 VAC, 50-500 Hz
supply for use with other transmitters.
SIZE:
high.
22.5" (57 cm) wide, 21.5" (55 cm) deep, and 26.5" (67 cm)
WEIGHT: 46 pounds (21 kg).
ACCESS: Access to the tuning controls and meters is available
through the hinged front access door. Access to the coarse taps
on the loading coil is available through the removable panel above
the tuning controls panel.
ELECTRICAL CONNECTIONS: RF input through flexible conduit on the
coupler bottom to an internal terminal block connection. Coupler
control wire connections to internal terminal block TBI mounted
above the Autotune PWB enclosure. Ground connection to ground lug
on exterior° Antenna connection to 1/4" threaded rod in antenna
feedthrough bushing.
SS-800AVS
Southern Avionics
9
Company
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