On Thu, 25 May 2000 in "Re: Boosting power of radio modules[EE]", Paul B. Webster VK2BZC wrote:
>Quitt, Walter wrote:
>
>> 433 is close enough to the ham bands that you should be able to get
>> one for amateur radio use that will do real well.
>
>  In this country at least, 433 *IS* an amateur band - which is why they
>(we) aren't too pleased about the proliferation of these devices.  In
>effect, it's an ISM band.

In this country 433 Was an entire amateur band,  We now have a 2 MHz chunk taken
out of the 70cm band for these devices...  Some did say we benefitted, we now
have two 70cm's bands...

Check out amateur radio information.  These modules tend not to filter out
interference very well so you could look into filters and Amps on the Rx side
as well as high gain aerials...

If there are restrictions on aerials have some way of switching to a lower gain
aerial before Transmitting and then back to the high gain when receiving...

Ian
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