Interface Of Packet Tncs - Yaesu VX-8R Operating Manual

I
NTERFACE OF
The VX-8R may be used for Packet operation, using the optional CT-44 and CT-131
microphone adapter (available from your Yaesu dealer) for easy interconnection to com-
monly-available connectors wired to your TNC. You may also build your own cable using
a four-conductor miniature phone plug.
The audio level from the receiver to the TNC may be adjusted by rotating the DIAL knob
while pressing and holding the
VX-8R from the TNC should be adjusted at the TNC side; the optimum input voltage is
approximately 5 mV at 2000 Ohms.
Be sure to turn the transceiver and TNC off before connecting the cables, to prevent volt-
age spikes from damaging your transceiver.
12
P
ACKET
key, as with voice operation. The input level to the
CT-131 Microphone Adapter
TNC
S
CT-44 Microphone Adapter
EAR
φ φ φ φ φ
3.5
MIC
φ φ φ φ φ
2.5
VX-8R O
10 F µ
Plug
2 kΩ
Plug
M
PERATING
TNC
SP
GND
MIC
PTT
GND
ANUAL