The Doug Hall controller for the radios was a rare thing in 2004 when I designed the Xcat.. It's the INTERFACE that's interesting because most commercial repeater controllers support it.? Doug Hall is actually an extension of the "BCD" interface that predated it.? The "BCD" interface was just a couple of CMOS shift registers that were wired across the BCD switches that some old radios had.?
Other than "real" radios the BCD "programmable" Kenwood tr7400 was one of the best two meter radios of it's day and more than a few found their way to local hilltops.?I had one on my packet BBS for YEARS and it was still working when I got out of the packet racket.
Again it's amazing we're still talking about Syntors !!? I wonder if the engineers that designed them have any idea!
73's Skip WB6YMH
