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From: email@example.com (Alberto Ricci Bitti www.riccibitti.com)
Subject: Re: old cellphone reuse/salvage and schematics/tech info?
Date: 7 Jan 2003 00:49:51 -0800
NNTP-Posting-Date: 7 Jan 2003 08:49:52 GMT
Here it is my 5 cents design, monitor and control devices with your old cellphone:
Alberto Ricci Bitti
"Smile, it can only get WORSE" wrote in message news:...
> Good Day all,
> What happens to old cell phones? They seem to be throw away devices,
> even tho they still work after the contract runs out. These days 2
> years of use makes the phone ancient and worthless, regardless of
> whether it still works or not.
> But these things are full of good rf parts sensitive 800 mhz receivers
> that can be put on 900 mhz ham bands and 3 watt transmitters that can
> run cw or fm---since the receiver and the transmitter have to run in
> close proximity to each other (and in full duplex), their LO's and
> transmitter spectral output has to be squeaky clean. Of course, there
> is a duplexer and the thing is loaded with top quality UHF rf
> components. Some of them have 'test modes' which allows the user to
> tune and transmit and manually control the frequencies from the
> Anyway, I never see service manuals or other technical information for
> these things and a one year old cellphone goes for 20 bucks or less on
> ebay these days! 2 year old cell phones go for 3 for 20 bucks or so..
> Has anyone hacked into these and published any information on using
> them for alternative purposes???? Or gaining control of these things
> in service mode? Does anyone deal in Service Manuals for these
> Email me or post reply here.
> Have a great day.
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