SCA.8
        Subject: update: listening to SCA (subcarrier) transmissions
        From: parnass@ihu1h.UUCP (Bob Parnass, AJ9S)
        Organization: AT&T Bell Laboratories
        Newsgroups: net.ham-radio,net.audio
        Date: 25 Feb 85 17:31:34 GMT


               EAVESDROPPING ON SUBCARRIER TRANSMISSIONS


         A few weeks ago, I posed a question about listening  to
         SCA  transmissions on the FM commercial broadcast band.
         An article in Monitoring_Times claimed that  connecting
         a vlf receiver to an FM broadcast receiver would permit
         SCA detection.

         Necessity being the mother  of  invention,  a  way  was
         found  to  confuse  the ICOM R71A into tuning below 100
         kHz1, and after receiving substantial inspiration  from
         Will  Martin,  Phil  Karn,  and others I now can report
         success!
CONTINUED IN SCA.9