Kenwood TR-851A Instruction Manual page 14

@ EXT.SP (External speaker) jack
Use the 8-ohm EXT.SP jack to connect an external
speaker.
@) KEY jack
Provides connection for the CW key. Use a 3.5 mm
dia. plug.
@) ANT (Antenna) jack
Provides connection for a 50-ohm antenna with a
male connector.
@) AUX (Auxiliary) jack
Provides connection for linear amplifier control. The
AUX jack is wired as shown below. For connection,
use the supplied 4-pin plug.
Both terminals will be
shorted on transmit
Relay contact capacity
ts 30 VDC.0.5 A.
ALC input
View from the rear panel
6) Fuse holder
Contains the following fuse:
TR-8514/851E: 8A
TR-751A/751E: 7A
® 13.8 vpc power supply jack
Provides connection for the standard 13.8 VDC
power supply. Insert the female end of the power
cable. Be sure that the red pin has ''+'' polarity and
the black pin has ''—'' polarity.
@ @) UP/DWN (Up/Down) switches