On Thu 2 Jul 2009 12:11, Larry Johnson pondered:
>
> In the United States, most radio transmitters must be type accepted
> (certified) by the Federal Communications Commission. Modification
> voids the type acceptance, so operating a modified mobile phone on its
> original frequencies would be illegal regardless of what the phone
> company's rules say. However, no certification is necessary for
> transmitters operated according to the rules for the Amateur Radio
> Service. Thus, an licensed amateur could legally use a modified mobile
> phone, provided it transmitted on frequencies allocated for amateur
> radio and met the other requirements for amateur operation, including
> not causing harmful interference to other services.
Assuming that the _licensed_ amateur could modify the phone enough that it
_could_ operate on frequencies allocated for amateur use.
The only thing that would be potentially close is a European GSM phone:
Rx Tx
E-GSM-900 880.0–915.0 925.0–960.0 MHz
R-GSM-900 876.0–915.0 921.0–960.0 MHz
T-GSM-900 870.4–876.0 915.4–921.0 MHz
& the US amateur band at 902 - 928 MHz.
I don't think any of the CDMA phones are close enough to the amateur bands to
have a hope of working - but I'm not as familiar with CDMA as GSM.
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