labelle@hplabsc.UUCP (WB6YZZ La Belle) (03/09/85)
Another SCA decoder can be made using the LM3089 or 3189 "fm if
subsystem". It contains IF stages quadrature detector, afc, agc,squelch
and first audio stage. It can accept uV input level signals so low
drive from your tuner is no problem. Simply add a 67kHz tuned input
and quad det. circuit, and it's ready!
GEORGE WB6YZZTaylor.Wbst@XEROX.ARPA (03/12/85)
I KEEP WONDERING IF ANY OF THIS NEAT TECHNOLOGY COULD BE USED FOR THE CORDLESS TELEPHONE LISTENING THAT SOME PEOPLE TALK ABOUT. I GUESS THIS IS FM IN THE RANGE 1.6 MHZ TO 1.3 MHZ. I HAVE THE UNIDEN 2021. TNX! JIM
Taylor.Wbst@XEROX.ARPA (03/13/85)
I HEAR A LOT OF NBFM IN THAT SERVICE. SOME CAN BE (INEFFICIENTLY) RECEIVED USING SLOPE DETECTION ON AN AM RECEIVER BUT MANY ARE NG. I THOUGHT THAT THERE MIGHT BE A SIMPLE WAY TO RECEIVE THESE PHONES. TNX! JIM