Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!linus!decvax!mcnc!ecsvax!udougc From: udougc@ecsvax.UUCP Newsgroups: net.followup Subject: Re: telecom security (insecurity!!!) Message-ID: <3459@ecsvax.UUCP> Date: Sat, 10-Nov-84 07:56:50 EST Article-I.D.: ecsvax.3459 Posted: Sat Nov 10 07:56:50 1984 Date-Received: Sun, 11-Nov-84 20:54:11 EST Lines: 12 <------ -----> A reasonable quality cassette tape deck can be used to record 300 baud transmissions. It can be wired across the phone line or an inductive pickup on the headset can be used (but only gets one side of the transmission). To display the data wire directly into a modem or just put the tape recorder over the cup on an acoustic coupler. The limiting factor seems to be speed stability in the tape recording, not frequency response. I have not tried 1200 baud but I would expect the abominable phase shifts in typical tape recordes to present real problems. Doug. C.