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DATA EQUIPMENT INTERFACE (ACC 2)
The ACC 2 connector allows connection of a Terminal Node Controller (TNC) or a Multimode Communications
Processor (MCP) for data communications.
2
RTK
RTTY modulation (input)
* Connect the transmit lead from your RTTY equipment for FSK operation.
3
ANO
Fixed-level audio from receiver (output)
* Connect to TNC or MCP receive data lead.
¢ Audio level is independent of VOLUME contro! setting.
ee
Chassis ground
PSQ
Squeich control
* Connect to TNC or MCP squelch control pin.
+ Prevents the TNC/MCP from transmitting while the receiver squelch is open.
* Squelch open:
High impedance
Squelch closed: Low impedance
Radiotelephone PTT line control
¢ Connect to TNC or MCP transmit/receive switching pin.
* Microphone audio input at the MIC pin on the Front Panel MIC connector is muted
when in transmit mode.
Microphone audio (input)
¢ Connect the transmit lead from your TNC or MCP for AFSK operation.
PKDG
Shield for Pin 7.
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ACC 2 connector
TNC/ MCP
=
(Rear Panel view)
Personal computer/
dumb terminal
18
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