At 09:26 PM 3/24/98 -0500, Chris KC2BBU wrote: >Is the Kenpro KR-5400A compatible with this Yaesu Box. (the KR-5400A looks >exactly the same as the Yaesu G-5400B) Also, any info on cabling of the >GS232 to Macintosh? The KR5400A control box does not have the computer interface circuitry. Look on the back for the DIN connecter. I don't think you will find one. I am not quite sure from your post what you have. Do you have a GR5400B control box and older rotators or vice-versa? As far as I know the rotators themselves are similar, i.e. KR-400, KR-500, G-500, KR5400A, GR5400B. But the Kenpro models are probably quite old. Kenpro was a company purchased or taken-over by Yaesu who have continued to manufacture them with a few changes. The most important change (moving the capacitor) was described in another post - by k4rs). My KR-400 and KR-500 were purchased in 1987, but are still in service. Parts such as position potentiometers are are available from Yaesu - same as in later models. ron, w8gus.