At 5/6/2008 21:06, you wrote: >Hi Guys, > > >Woohoo, the Doug Hall "Rosetta Stone"! Thanks, Skip. > >We need to go back a little deeper in history... > >I think the format you have is the data going from the controller to the >RBI-1. Doug H based it on the dominant format at the time, which was the >format used by ACC to drive their "frequency control" shift register >boards (designed for thumbwheel HTs). Doug made his input format available >to repeater controller manufacturers in his "generic" document so we all >could make our controllers RBI-1-compatible. We added that feature to our >7K in V2.01. It's not that big a secret.
Well, it's enough of a secret that it can't be found on the web. After several months of asking around, Skip's posting of the protocol is the first I've ever seen of it. > >The output format of the RBI-1, on the other rhand, is the format Kenwood >used to control a group of radios in the trunk from a handset (was it >called the RC-10? RC-20?) in the driver's compartment. His box was a >protocol converter that took the 48- or 56-bit stream from the controller >and make Kenwood-speak out of it. Wasn't trivial at the time. Right. That will be the real challenge if I (or anyone else) is going to make a replacement for the RBI-1, as that protocol is going to be a lot harder to find. Perhaps when I finally get one I'll sniff the data going between the RBI=1 & Kenwood radio & see if I can make sense of it (Looking at the Kenwood service manual I can tell it's SPI, similar to the data stream running between the controller & RBI-1 except there is a 2nd SPI data line for data going back from the radio to the remote interface. I assume this is used for the COS indicator & possibly who knows what else??? Bob NO6B
