RF CONTROL ASSEMBLY P/O MODULE A4500 (HOMING MODE).

TM 11-5820-670-30

1-51. RF CONTROL ASSEMBLY P/O MODULE A4500 (HOMING MODE).

DIODE SWITCH

EL1AT125

Rf signals entering the left and right homing antennas are alternately switched through the diode

switch to the rf attenuator circuit at a 100 Hz rate. The 100 Hz square wave from the 100 Hz oscillator is

used to bias the diodes in the diode switch. When the square-wave bias voltage is positive(+), rf

signals from the left homing antenna are coupled through the diode switch to the rf attenuator circuit.

When the wave becomes negative (-), rf signals from the right homing antenna are coupled to the rf

attenuator.

RF Attenuator

EL1AT126

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