&211(&7,1*3(5,3+(5$/(48,30(17

7(50,1$/'(6&5,37,216 &20&211(&725
Pin No.Pin Name

Function

I/O

1

NC

No connection

—

 

 

 

 

2

RXD

Transmit data

O

 

 

 

 

3

TXD

Receive data

I

 

 

 

 

4

NC

No connection

—

 

 

 

 

5

GND

Ground

—

 

 

 

 

6

NC

No connection

—

 

 

 

 

7

RTS

Receive enable

I

 

 

 

 

8

CTS

Transmit enable

O

 

 

 

 

9

NC

No connection

—

 

 

 

 

$&&&211(&725

Pin No.

Pin Name

Function

I/O

1

NC

No connection

—

 

 

 

 

2

RTTY

RTTY key input

I

 

 

 

 

 

 

Audio output from the transceiver

 

 

 

• Connect to the audio input of the TNC, MCP, or PC (or PC

 

 

 

interface connection).

 

 

 

• Audio output level is independent from the AF control setting.

 

3

ANO

• Audio output level can be changed by adjusting the value

O

in Menu No. 67. Set the value to a moderate audio output

 

 

 

 

 

level. The default value of 4 is approximately 0.5 Vp-p, which

 

 

 

is a standard modulating signal. The settings of 0 ~ 9 vary

 

 

 

from approximately 0 Vp-pto 1.2 Vp-p.

 

 

 

‡ ,PSHGDQFH$SSUR[NŸ

 

 

 

 

 

4

GND

Ground

—

 

 

 

 

 

 

Transceiver squelch control

 

5

PSQ

• Connect to the squelch input of the TNC, MCP, or PC

O

connection interface.

 

 

• Squelch open: Low impedance

 

 

 

• Squelch closed: High impedance

 

 

 

 

 

6

NC

No connection

—

 

 

 

 

7

NC

No connection

—

 

 

 

 

8

GND

Ground

—

 

 

 

 

 

 

PTT input for data communication

 

9

PKS

• Connect to the PTT output of the TNC, MCP, or PC

I

connection interface.

 

 

 

 

 

• Microphone audio input mutes when transmitting.

 

 

 

 

 

10

NC

No connection

—

 

 

 

 

 

 

Audio input for data communication

 

 

 

• Connect to the audio output of the TNC, MCP, or PC (or PC

 

 

 

interface connection).

 

 

 

• Audio input level is independent from the microphone gain

 

11

ANI

(set with the [MIC] key).

I

• Audio input level can be changed by adjusting the value in

 

 

 

 

 

Menu No. 66. The default value of 4 is approximately 10

 

 

 

mVrms, which is a standard modulating signal. The settings

 

 

 

of 0 ~ 9 vary from approximately 0 mVrms to 1 mVrms.

 

 

 

‡ ,PSHGDQFH$SSUR[NŸ

 

 

 

 

 

12

GND

Ground

—

 

 

 

 

13

SS

PTT input (same as the front panel MIC connector)

I

 

 

 

 

65