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From: depolo@eniac.seas.upenn.edu (Jeff DePolo)
Newsgroups: sci.electronics
Subject: Re: I listen to cellular traffic on my VCR !
Message-ID: <40007@netnews.upenn.edu>
Date: 28 Mar 91 21:53:27 GMT
References: <77415@bu.edu.bu.edu> <1840041@hpsad.HP.COM>
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In article <1840041@hpsad.HP.COM> frankb@hpsad.HP.COM (Frank Ball) writes:
>Cellular radio is what used to be UHF channels 70 thru 81 or 83 (whatever
>it went up to).  These were re-allocated for cellular radio.  
>
>You can only get 1/2 of the conversation, since they transmit and receive
>on different frequencies.

If you monitor the mobile side, you will have a hard time hearing
anything, unless it's very close.  A couple of watts on 800 MHz from
a mobile station doesn't give you very much range without a dedicated
800 MHz outdoor antenna, such as a beam or a vertical colinear.

If you monitor the "base" side (the cell site), you will hear the landline
party at full volume, and the mobile station partially muted (probably
about 10-20 dB down in most cases).  Both sides are usually completely
understandable, however.

								--- Jeff

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 Jeff DePolo  N3HBZ/AE          Twisted Pair: (215) 386-7199                  
 depolo@eniac.seas.upenn.edu    RF: 146.685- 442.70+ 144.455s (Philadelphia)  
 University of Pennsylvania     Carrier Pigeon: 420 S. 42nd St. Phila PA 19104