!5S/P DIF INPUT TERMINAL [S/P DIF– IN] (p. 2-7)!6S/P DIF OUTPUT TERMINAL [S/P DIF– OUT] (p. 2-7)

Connects external equipment that supports S/P DIF input/output.

!7ALC LEVEL ADJUSTMENT POT [ALC ADJ] Adjusts the ALC levels.

No adjustment is required when the ALC output level of a connected non-Icom linear amplifier is 0 to –4 V a DC.

!8ALC INPUT JACK [ALC] (p. 2-8)

Connects to the ALC output jack of a non-Icom linear amplifier.

!9T/R CONTROL JACK [RELAY] (p. 2-8)

Connects to ground when transmitting to control an external unit, such as a non-Icom linear amplifier.

NOTE: T/R control voltage and current must be lower than 16 V DC/0.5 A (or 250 V AC, 200 mA with MOSFET switching).

@0ACCESSORY SOCKET 1 [ACC 1] @1ACCESSORY SOCKET 2 [ACC 2]

Enable connection of external equipment such as a linear amplifier, an automatic antenna selector/ tuner, a TNC for data communications, etc.

• See p. 2-11 for socket information.

@2EXTERNAL SPEAKER JACK [EXT-SP] (p. 2-6) Connects an external speaker (4–8 Ω), if desired.

@3EXTERNAL KEYPAD JACK [EXT KEYPAD] (p. 2-7)

Connects an external keypad for direct voice memory or electronic keyer control.

Transceiver mute control line (both transmit and re- ceive) is also supported.

@4METER JACK [METER] (p. 2-7)

Outputs a signal showing received signal strength, transmit output power, VSWR, ALC, speech com- pression, VD or ID level for external meter indication.

@5DC OUTPUT JACK [DC OUT] (p. 2-7)

Outputs a regulated 14 V DC (approx.) for external equipment. Connected in parallel with 13.8 V outputs of [ACC 1] and [ACC 2]. (max. 1 A in total)

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PANEL DESCRIPTION

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@6TRANSVERTER CONNECTOR [X-VERTER] (p. 2-6)

External transverter input/output connector. Activated by voltage applied to [ACC 2] pin 6, or when the transverter function is in use. (pgs. 2-11)

@7RECEIVE ANTENNA IN [RX ANT– IN] @8RECEIVE ANTENNA OUT [RX ANT– OUT]

Located between the transmit/receive switching circuit and receiver’s RF stage.

Connects an external unit, such as preamplifier or RF filter, using BNC connectors, if desired.

When no external unit is connected, [RX ANT– IN] and [RX ANT– OUT] must be deactivated and shorted by the switching relay internally. This setting is available on the antenna set screen. (p. 10-5)

Transmitter

Transmit/Receive switching circuit

IN

[RX ANT]

OUT

Receiver

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