skipp025 wrote: > ctcss logic back to an external repeater controller > > I've been talking with a small number of people off the group about > external repeater controller interface logic lines. In specific how > many of the external repeater controllers handle ctcss (sub-tone, aka > PL) detection, logic, control and selection. > > To keep things short and simple... let us assume an example of the > two most common repeater controller layouts regarding ctcss operation.
I'll see your two examples and raise you one, Skipp. (GRIN! Or maybe 2...) Example 3: At least two controllers now support CTCSS detection and/or generation directly in the controller. The S-Com 7330 (currently in beta test) offers CTCSS encode, but not decode: http://www.scomcontrollers.com/ The PSE-508 series from Pion and Simon Electronics handles both encode and decode, but is built to be installed into a specific repeater, the GE MASTR II. (In fact, their latest software rev offers 4 CTCSS tone "community tone panel"-like functionality.) http://www.pionsimon.com/products.htm Wasn't there also a Pacific Research controller that did one or both of these at one point? They've always been too expensive for me, but I thought one of their boxes did it... maybe... ? I think putting the encoder/decoder up in the controller is "the wave of the future"... if done right, it should make things a lot simpler in the long-run... no fussing with CTCSS boards in any fashion, just bring discriminator audio to the controller and find a place to send audio back that isn't high-pass filtered... done deal... The controller folks making the CTCSS circuits have to go out and get an "edumacation" on Reverse-Burst/STE and all that fun and games though, if they want to fully emulate the original manufacturer's boards... I know the 7330 is going to have the option to do "either type" of phase shift on their encoder, for example. Not sure if the P&S does RB/STE at all. Example 4: Go digital, leave the silly CTCSS behind. The 70's are calling and they want their repeater back! Heh heh. :-) :-) :-) !!! Nate WY0X
