"D. Stussy" wrote in message
...
"Steve Calvin" wrote in message
...
Sorry if this isn't the right group to ask this, if not and
someone know of a more appropriate group I'd appreciate a
pointer.

I currently have GMRS radios that are rated at "16 miles"
(yeah, maybe on the salt flats or over water, ok, we all
know about that). The are rated at 2W on the GMRS freq's
and .5w on FRS.

Why are the new "25 mile" units still rated at 2W? What's
the difference in the two radios to justify the increased
distance claims?

Can't be frequency or a change to the privacy codes or they
wouldn't work with older radios.

Increased sensitivity/filtering? Hype?

Hype and poor/deceptive advertising. Probably the advertising dept. is
clueless
as to actual specs.

2W on a unity gain antenna should have a maximum range of 1.4km (or 0.878
miles)
given the standard receive sensitivity of 0.2u.

GMRS is CB, and therefore, your better group by topic would have been
"rec.rado.cb." However, I agree with other responses that you would
probably
get a better quality response here.


GMRS is NOT CB. See URL:
http://wireless.fcc.gov/services/ind...general_mobile

GMRS frequencies are UHF- FM and requires a license and a fee for
application (~ $75 ?). Use is sharply defined. Repeater operation is
permitted. There are severe penalties for non-licensed users.

Lots of details at URL:
http://www.provide.net/~prsg/wi-gmrs.htm

Lamont