Interfacing To Other Linear Amplifiers - Yaesu FT-2000 Operating Manual

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The TX/RX switching in the linear amplifier is con-
trolled by switching components in the transceiver. The
relay circuit of the FT-2000 used for this switching is
capable of switching AC voltage of 100 Volts at up to
300 mA, or DC voltages or 60 V at 200 mA or 30 V at
up to 1 Amp. In order to engage the switching relay,
use Menu item "144 tGEn ETX-GND;" set this Menu
item to "EnA (Enable)" to activate the amplifier switch-
ing relay.
The specified range for ALC voltage to be used with
the FT-2000 is 0 to -4 Volts DC.
Amplifier systems utilizing different ALC voltages will
not work correctly with the FT-2000, and their ALC
lines must not be connected if this is the case.
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