ELAD FDM-DUO User Manual - Rev. 2.3 - 06/2016
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37
6 CAT Remote Control
6.1 General Specifications
The FDM-DUO transceiver uses a full-duplex, asynchronous, USB serial interface for communicating
through the USB CAT port. Each data is constructed with 1 start bit, 8 data bits, 1 stop bit, no parity is
used (8N1). The baud rate is selectable in the [70] CAT BAUD menu. Available values are 9600, 38400,
57600, 115200 bps.
The FDM-DUO implements proprietary commands and also a subset of the Kenwood TS-480 command
set. Some of those TS-480 commands have no effect on the transceiver, they only ensure the
compatibility of the FDM-DUO with Ham Radio Deluxe.
6.2 Commands Types
A CAT command is composed of an alphabetical part, various parameters and a terminator that signals
the end of the command. For example to set the VFO-A to 14MHz the command is: “FA00014000000;”
with :
“FA”: alphabetical command,
“00014000000”: parameter,
“;”: terminator.
CAT commands can be classified as shown below:
EXAMPLE
To set the VFO-A to 14MHz the PC sends the SET command type “FA00014000000;”
To read the VFO-A frequency the PC sends the READ command type “FA;”, the ANSWER
response type is returned to the PC: “FA00014000000;”.
NOTE
Some particular rules about the CAT commands on the FDM-DUO :
not all the commands have the three types of command/response (SET, READ and ANSWER),
normally, send the SET command type will not cause the FDM-DUO to send the ANSWER
response type but if a command does not have a READ command type and has the SET and
ANSWER type, then send the SET command will cause the FDM-DUO to send the ANSWER
response type.
CAT
commands
Input
PC->FDM-DUO
SET
(sets a parameter)
READ
(reads a parameter)
Output
FDM-DUO->PC
ANSWER
(sends a parameter)
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