Can't get USB Interface for the KPA500 to talk

N8FNR

Mike-VA3MW

You will need a Null modem adapter which crosses pin 2 and 3 on the 9 pin connector. Make Sure you are also connected to the transceiver port on the amplifier.

WX7Y

Patrick

Best way is from the radio usb with proper config of the usb in SmartSDR. I also controlled the KAT500 tuner same way. Flex also monitors the usb com between radio and amp and tuner. This setup eliminated the need for use of DDUtil.

Mike-VA3MW

Required Cables:
● FTDI USB to Serial Cable
● Null Modem Cable (Pins 2 and 3 crossed, pin 5 straight through)

Device Setup:

● Connect the FTDI USB to Serial Cable to the Null Modem cable, and connect the Null Modem cable to the “RS232 (XVCR)” port on the back panel of the KPA500
● Set the baud rate in the “RS232 X” menu entry. All speeds (4800-38400) should work. Set this value to 9600 to match the default value of the FLEX-6000.
● Go to the "RADIO" menu and set the option to "SERIAL"
● Go to the “SER POLL” menu and set polling to “ON”
SmartSDR Setup:
● Set the Cable Type to “CAT”