King radio KMC-96 automatic antenna tuner
Power requirements: 9-15Vdc -00 version, 20-30Vdc -01 version
Current: 0.75 amp maximum
Length: 13.58 inches (34.49 cm)
Width: 8.50 inches (21.59 cm)
Height: 4.75 inches (12.07 cm)
Weight: 9.8 lbs (4.45 Kg)
Frequency range: 2.0-30.0 MHz (operates also on 1.8 MHz, 160 meter band)
Warmup time: None
RF Input Impedance: 50 Ohms
Maximum RF Power: 150 Watts, 40 Watts average
Duty Cycle: Continuous
Antenna Matching Capability:
Whip Antennas, 15-45ft
Open wire antennas, 20-75ft
Grounded antennas, 10-25ft
Tune Time: 3 sec nominal
Temperature: -55 to +55deg. celsius 1/2 hour +70deg. celsius
The antenna coupler provides an accurate and efficient impedance match between the antenna and the 50 Ohm output impedance of the power amplifier (included in the KING KMC-95 transceiver)
The matching network consists of an (variable, 0.6-41uH in 0.01uH steps) inductor-(variable, 25-4000pF in 1pF steps)capacitor L network. The network can be configured with a shunt inductor and series capacitor or shunt capacitor and series inductor to tune a wide range of antenna impedances.
A transformer can be switched into the input of the L network so the network will only have to transform the antenna impedance to 12.5 Ohms, and the transformer will increase the impedance to 50 Ohms.
A capacitor can be switched in series with the inductor when tuning requires less inductance than the stray inductance.
Capacitors section with high voltage reed relays (King Bendix-King Honeywell partnumber 032-00043-0000)