





            
            The FSK/Tone  decoder that  I use  is a kit called AEM 3500,
            also known  as   "The Listening  Post" that can be purchased
            from Jaycar  Electronics (stores  in Sydney,  Melbourne  and
            Brisbane), catalog number KM-3015 for $39.95.
            
            JAYCAR HEAD OFFICE
            115-117 Parramatta Rd.
            Concord NSW 2137
            P.O. Box 185
            Concord NSW 2137
            Phone: (02) 747 2022
            Mail Order Hotline: (02) 747 1888
            Order Line: 008 022 888
            
            Rod Irving Electronics in Melbourne also sell "The Listening
            Post" kit, catalog number K33500 for $39.95.
            
            Rod Irving Electronics
            P.O. Box 620
            Clayton
            Victoria 3168
            Inquiries  (03) 543 7877
            Orders only TOLL FREE line 008 33 5757


            A new FSK/Tone decoder was decribed in SILICON CHIP magazine
            in the November 1989 edition. The kit is called the RADFAX decoder
            and is available from Jaycar Electronics for $44.95. This kit 
            gives much more control of the decoders centre frequency,
            baud rate filtering, and bandwidth, and can be powered from 
            a plug pack.
            
