Interfacing To Other Linear Amplifiers - Yaesu FTDX101MP Operation Manual

• Interfacing to Other Linear Amplifiers

• The TX GND OUT pin (pin 2) of the LINEAR jack is a transistor "open collector" circuit. It is capable of
handling positive relay coil voltages up to +60VDC at 200 mA or +30 VDC at 1 A.
• When using multiple linear amplifiers for different bands, you must provide external band switching of the
"Linear Tx" relay control line from the "TX GND OUT" line at the LINEAR jack.
Do not exceed the maximum voltage or current ratings for the "TX GND OUT" pin (pin 2) of the LINEAR jack.
This line is not compatible with negative DC voltages, or AC voltages of any magnitude.
ANT 1
ANT 1 ANT 2
GND
DC IN
GND
The figure above shows the FTDX101MP rear panel connections to other linear amplifiers.
ANT 1
ANT 1 ANT 2
GND
DC IN
GND
The figure above shows the FTDX101MP rear panel connections to other linear amplifiers.
Antenna Cable (50 ohms)
EXT SPKR KEY REM METER EXT ALC RS-232C
A B
LINEAR ACC PTT +13.8V TUNER
LINEAR
D-sub 15 pin
Coaxial Cable (50 ohm)
EXT SPKR KEY REM METER EXT ALC RS-232C
A B
LINEAR ACC PTT +13.8V TUNER
TX GND EXT ALC
HF/50 MHz Antenna
RF OUT RF IN
GND
HF/50 MHz Antenna
RF IN RF OUT
GND
GND
EXT ALC
TX GND
15