* mch <[EMAIL PROTECTED]> [2007 Apr 25 15:33 -0500]:
> Wrong. If it's not an open protocol, it's not legal in the ham band.
Here is the relevant portion for FCC jurisdictions:
-----
§97.309 RTTY and data emission codes.
(b) Where authorized by §§ 97.305(c) and 97.307(f) of this part, a
station may transmit a RTTY or data emission using an unspecified
digital code, except to a station in a country with which the United
States does not have an agreement permitting the code to be used. RTTY
and data emissions using unspecified digital codes must not be
transmitted for the purpose of obscuring the meaning of any
communication. When deemed necessary by a District Director to assure
compliance with the FCC Rules, a station must:
(1) Cease the transmission using the unspecified digital code;
(2) Restrict transmissions of any digital code to the extent
instructed;
(3) Maintain a record, convertible to the original information,
of all digital communications transmitted.
-----
Looks like to me that P25 is legal above 50.1 MHz noting the bandwidth
restrictions of 97.307(f)(5) and 97.307(f)(6). From 33cm and shorter
wavelengths, there are no bandwidth restrictions--97.307(f)(7).
73, de Nate >>
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