![]() Certain adapters, in particular those intended for use with Ethernet switches, may use a DB-9 connector, but with 5v voltage levels. ![]() These can be obtained from many different vendors for a very low price, but ensure that it is voltage-compatible with your radio - standard RS232 is actually a 12v signaling system. However, due to the rising omission of RS232 serial ports on modern computers, it may be necessary to use a USB-to-Serial adapter. Many transceivers, even modern rigs, use a standard DB-9 serial connectors. CAT setup essentially consists of connecting the radio to a serial port on the computer, finding out which port it is on and configuring the speed (depending on the radio, this can be fixed to one or just a few baud rates, or it may be in a menu on the radio with quite a few options), then finding and configuring host-side support for the particular transceiver. Overall, there are no real special concerns when connecting a radio transceiver compared to connecting any other serial device.ĬAT operates using a proprietary (though almost always well-documented, and often quite similar between manufacturers) protocol over a standard asynchronous serial connection. However, for a quick-and-dirty digital modes setup, it isn't strictly necessary. NOTE: CAT is very convenient, and as mentioned later, many transceivers work quite well when using CAT for PTT.
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