Kingfisher Plus+ Hardware Manual
ADP-28: RTU Serial Port to Trio H–Series Spread Spectrum Radio
To Kingfisher Serial Port
ADP-29: Serial Port to Trio M Series Radio (with modem fitted) E.g. MR450
For hardware flow control see the ADP-16.
To Kingfisher Serial Port
Hardware Manual Version 7.16
http://www.servelec-semaphore.com/
Page 236