[Elecraft] iPhone (was: Elecraft Digest, Vol 40)

[Phil Kane]

On Fri, 10 Aug 2007 15:35:49 -0400 (EDT), Thom LaCosta wrote:

>>  More accurately the one carrier that uses the protocol that the
>>  phone uses and has agreed to sign up subscribers.  Different
>>  carrier, different protocol.

>But old fashioned cell phones like mine can use at least 2 carriers...

  That's because there is only one analog protocol - AMPS, the
  original ATT/Bell Labs one!   My carrier (Verizon Wireless) has
  notified us a while back that they will be dropping analog
  service sometime next spring.

  When you get into the digital world, there are at least three
  incompatible protocols - TDMA, CDMA. and GSM.  If there are
  several carriers using the same digital protocol, the chances
  are that one is leasing spectrum space from one of the three
  majors (ATT/Cingular, Verizon Wireless, and T-Mobile).

>It would seem that there are some other issues

  Lots and lots of them!

>And so apologies to the list for OT
>>
>>  No different from trying to receive AM broadcasts on an FM
>>  broadcast radio.

>Guess you never had an am/fm radio?

  My Kenwood R-5000 HF communications receiver can decode FM.  My
  Elecraft K2 can't.

--
   73 de K2ASP - Phil Kane
   Elecraft K2/100   s/n 5402