3. Installation
Newer Kenwood transceiver (since TS-570) have a 9 pin SUB-D connector and operate with
V24 levels for transceiver control. It´s intended for direct connection to a COM port of a PC.
Also these transceivers can easily be controlled by the PTC-IIIusb. Just solder a 9 pin
connector to the attached cable as shown in the table below.
Signal PTC
Color
KENWOOD
TxD
PIN 3 yellow
PIN 3
RxD
PIN 8 red
PIN 2
CTS
PIN 4 green
PIN 8
RTS
PIN 2 white
PIN 7
GND
PIN 13 orange
PIN 5
This cable is available completely
assembled. Refer to chapter
on page
Table14: KENWOOD V24
3.6.2
Connections PTC - ICOM
Many ICOM’s use a 3.5 mm jack socket for remote control. Bi-directional communication is
carried out over a single wire. Different transceivers have different addresses, so it is possible
for more than one transceiver to be connected to the remote control cable. Further information
can be found in the appropriate literature from ICOM.
45
Signal
PTC
Color
ICOM
ICOM
PIN 6
black
inner
GND
PIN 13 orange
outer
This cable is available completely assembled.
on page
GND
ICOM-Signal
Figure 5: ICOM plug
Table15: ICOM
3.6.3
Connections PTC - YAESU
Some YAESU’s like the FT-890 or FT-990 use a 6 pin DIN socket for remote control:
Signal
PTC
Color YAESU
TxD
PIN 9
pink
PIN 3
RxD
PIN 1
violet
PIN 2
GND PIN 13 orange PIN 1
Table 16: YAESU FT-890/990
Older transceivers (like the FT-757) support serial input only. In this case the PTC-IIIusb
adjusts the frequency but can not read it out.
Signal PTC
Color YAESU
TxD
PIN 9 pink
PIN 3
GND
PIN 13 orange PIN 1
Table 17:
YAESU FT-757
