Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!netsys!vector!nobody From: wa4mei!rsj@gatech.edu (Randy Jarrett WA4MEI) Newsgroups: comp.dcom.telecom Subject: Re: Cellular Setup Message-ID: Date: 28 Jan 89 15:18:47 GMT Sender: chip@vector.UUCP Lines: 33 Approved: telecom-request@vector.uucp X-Submissions-To: telecom@bu-cs.bu.edu X-Administrivia-To: telecom-request@vector.uucp X-TELECOM-Digest: volume 9, issue 36, message 4 In article boottrax@csd4.milw.wisc.edu (Perry Victor Lea) writes: >X-TELECOM-Digest: volume 9, issue 24, message 4 > >Question: How is phase shifting actually involved in communications between >the mobile unit and the switching office ? > >Question: Is it possible to access cellular setup channels and place a >fraudulent call with a ham radio? > >Thanks for your help .. > >Perry I can't be much help in answering your first question but I would like to say something about your second question. There are authorized Amateur Radio (ham) frequencies that are near to the cellular phone channels but the equipment required to access cellular telephone services are very specialized and very different from ham radio equipment. It is probably not possible for a ham to use his equipment to access the cellular services but it would be possible for anyone with the proper knowledge to make changes to cellular phone equipment and make it look (respond with the proper digital codes) like someone elses. So I guess that the bottom line is that no, it is not possible to access cellular channels and place fraudulent calls with ham radio. -- Randy Jarrett WA4MEI UUCP ...!gatech!wa4mei!rsj | US SNAIL: P.O. Box 941217 PHONE +1 404 493 9017 | Atlanta, GA 30341-0217