They are unlicensed... but type approved.  Once you modify it it is no
longe type approved!  If you want the transmitter to be omnidirectional
I would leave it alone, and work on improving the receiver.

Sherpa Doug

> -----Original Message-----
> From: Ian Jordan [mailto:ian@TWINGLES.COM]
> Sent: Saturday, August 25, 2001 4:20 PM
> To: PICLIST@MITVMA.MIT.EDU
> Subject: Re: [EE]: Increasing the range of a 2.4Ghz A/V
>
>
> 2.4 GHz is the unlicensed ISM (Industrial, Scientific,
> Medical) band. No
> license needed to play with the transmitter, at least up to a
> watt or so- I
> forget the exact spec for max TX power.
>
> --Ian
>
>
> > Add a loop yagi to the receiver, or better yet, a 4-6 turn helix.
> > You can't have gain without directivity, but all that takes
> is someone to
> > point the antenna at the transmitter during flight.
> > You can also add receiver gain with mini-circuits MMIC amplifiers.
> > If you mess with the transmitter, you need a ham licence.
> >
>
> --
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>
>

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