Page 4
VX-4000 Operating Manual
REAR (Heatsink)
À
Antenna Socket
The 50-ohm coaxial feedline to the antenna must be connected here, using a type-M
(PL-259) plug.
Á
External Speaker Jack
An external loudspeaker may be connected to this 2-contact, 3.5-mm mini-phone
jack.
Caution: Do not connect this line to ground, and be certain that the speaker has
adequate capability to handle the audio output from the VX-4000.
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13.8-V DC Cable Pigtail w/Connector
The supplied DC power cable must be connected to this 2-pin connector. Use only
the supplied fused cable, extended if necessary, for power connection.
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DSUB 25-Pin Accessory Connector
External TX audio line input, PTT (Push To Talk), Squelch, and external RX audio
line output signal may be obtained from this connector for use with accessories such
as data transmission/reception modems, ets.
CONTROLS & CONNECTORS
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