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6
1
PANEL DESCRIPTION
1
D
DATA JACK PIN ASSIGNMENT
q
DATA IN
Input terminal for data transmit. See p. 63 for details on
how to toggle data speed between 1200 (AFSK) and
9600 bps (G3RUH, GMSK).
w
GND
Common ground for DATA IN, DATA OUT and AF OUT.
e
PTT P
PTT terminal for packet operation only. Connect ground to
transmit data.
r
DATA OUT
Data out terminal for 9600 bps operation only.
t
AF OUT
Data out terminal for 1200 bps operation only.
y
P SQL
Becomes high (+5 V) when the transceiver receives a sig-
nal which opens the squelch.
• To avoid unnecessary TNC transmission, connect squelch to the
TNC to inhibit transmission when receiving signals.
• Keep audio output at a normal level, otherwise a “P SQL” signal
will not be output.
Front panel view
w
y
r
q
e
t