Specifications

Band Decoder
TRX-manager can control external accessories (such as automatic selection of antenna, linear
amplifier, external controller) by using band data provided on a parallel port or commands sent
to an RS232 port.
Tip
Kenwood does not implement any band data directly on the radio and there is no "Kenwood
format". ICOM provides the band data via an analog voltage signal. For the ICOM and Kenwood
radios, the TRX-Manager's band decoder provides a simple solution for the remote control of
antenna switches or other accessories.
Parallel port
The default format for the band data is compatible with the most popular software (CT, NA,
Log-EQF, TR-Log...), Yaesu accessories and many third party device (Band Decoder + Relay
Box). In addition, the band decoder is programmable which allows you customizing it to your
particular needs.
RS232 port
The format depends on the controller you are using. Default values are compatible with the
MicroHam MK2R controller but you can adjust these values according to the wiring of the
accessory port or the controller you are using. Hexadecimal or ASCII commands are
supported.
Related Topics

Band plan

SO4R
Settings
You set up the band decoder from the Parameters/Setup dialog under the BAND DCD tab.
Parallel port
Please choose a free LPT port because the decoder can not be used with any other device
(i.e. a printer...). However, the decoder is compatible with the CW Interface of TRX-Manager.
To set up a non standard LPT (such as USB/Parallel adapter), please do the followings :

from the System Properties, note the base address for that LPT port. Address should be in
the XXXX-YYYY format. Note only XXXX.

from TRX-Manager, open the Setup dialog and under Band DCD select Custom LPT as LPT
Port. Fill in the address box (H) with the base address XXXX of the LPT Port.
RS232 Com Port
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