Article View: sci.electronics
Article #15453Re: RF transmitters, cellular phones
From: Alex Shrom
Date: Sun, 27 Dec 1992 19:36
Date: Sun, 27 Dec 1992 19:36
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In article <103212@netnews.upenn.edu> alex@anat3d1.anatomy.upenn.edu (Alex Shrom) writes: > >for me. I would appreciate transmitters powered both by batteries and >by phone line current (while still allowing normal operation of the >phone). [stuff deleted] > > Thanks in advance--leave all replies here. > Recently there was some confusion as to what I meant by a transmitter powered by phone line current. I want to build a transmitter which gets its power and its input signal from a phone line while allowing normal operation of the phone (or relatively so). I have seen them in magazines, but I should be able to throw one together for far less than they charge.
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Path: arc1-ca.pugleaf.net!sparky!uunet!europa.asd.contel.com!darwin.sura.net!jvnc.net!netnews.upenn.edu!anat3d1.anatomy.upenn.edu!alex From: alex@anat3d1.anatomy.upenn.edu (Alex Shrom) Newsgroups: sci.electronics Subject: Re: RF transmitters, cellular phones Message-ID: <103248@netnews.upenn.edu> Date: 27 Dec 92 19:36:17 GMT References: <103212@netnews.upenn.edu> Sender: news@netnews.upenn.edu Organization: University of Pennsylvania Lines: 19 Nntp-Posting-Host: anat3d1.anatomy.upenn.edu