Icom IC-751A Instruction Manual page 22

SECTION 5 SYSTEM INTERCONNECTIONS
5 - 1 AC POWER SUPPL Y
5 - 2 EXTERNAL LINEAR AMPLIFIER
•USING THE IC-2KL LINEAR AMPLIFIER
NOTE:
Ali cables required for the interconnec-
tion of the IC-751A and the IC-2KLare
supplied with the amplifier.
Refer to SECTION 4 - 6 for installation directions.
The IC-751A is designed to operate into a load with 50 ohms
impedance. Therefore, any amplifier used must have a 50 ohm input
impedance for best efficiency.
The optional 500 watt, solid-state IC-2KL linear amplifier may be
easily connected to the IC-751A with the cables supplied with the
amplifier in the same way as other ICOM transceivers. Refer to the
IC-2KL Instruction Manual for details.
lt is recommended that the ICOM IC-AT500 Automatic Antenna
Tuner be used when operating with the IC-2KL and 500 watts
output (See SECTION 15). The amplifier connections are shown
below.
TO ANTENNA,-_ _ _ _ _ _ A_C_C_C_A_B_LE_(_S_U_P_P_LI_E_D_W_I_T_H_I_C_-2_K_L_) _ _ _ _ _ _ _ _ _ _
COAXIAL CABLE
(SUPPLIED WITH ·1C-2KL)
IC-2KL
0 0
0
00
eB
TO IC-2KLPS
•USING NON-ICOM EXTERNAL
AMPLI FIERS
TO
ANTENNA
~
0
RF OUT
-::- GROUND
0
0
The RELAY JACK on the rear panel of the IC-751A supplies an
output from a built-in keying relay for an external amplifier. The
ALC jack is an input for the automatic level control signal from an
external amplifier.
The specification for the keying relay is 50 volts DC maximum. Do
not exceed this limit.
The RELAY JACK is grounded while the transceiver is in the trans-
mit mode and it opens when the transceiver returns to the receive
mode. The output condition of this jack does not control either
the transmit or receive function of the transceiver.
50 OHM COAXIAL CABLE
0
RF IN
ALC
ALC (Q)
q ) - - - - C P
SEND(Q)
GND
13.8V DC
EXTERNAL (LINEAR) 1MPLIFIER
~
GROUND
-18-