Specifications

VX-8DR/DE OPERATING MANUAL12
INTERFACE OF PACKET TNCS
The VX-8DR/DE may be used for Packet operation, using the optional CT-M11 MIC/SP
Connection Cable (available from your Yaesu dealer) for easy interconnection to com-
monly-available connectors wired to your TNC.
The audio level from the receiver to the TNC may be adjusted by rotating the DIAL knob
while pressing and holding the key, as with voice operation. The input level to the
VX-8DR/DE from the TNC should be adjusted at the TNC side; the optimum input volt-
age 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.
CT-M11 MIC/SP Connection Cable
If you wish to disable the
VX-8DR/DE internal
speaker while packet
operation, connect a 22
kΩ resistor between
wires Black and Gray.
TNC
SP
Brown
Red
Black
Gray
Orange
GND
GND
2 k
Ω
22 k Ω
10 Fµ
MIC
PTT