TI-H: Re: radio link


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TI-H: Re: radio link





 
> Another feature that would be nice... a directional antena option. I don't
> like super long range stuff because it could interefere with others. If
> there were a way to focus the low power guy to be able to go long range in 1
> direction, that would be awesome!

I like the idea of directional antennas too, but what freq. this link
will be on will limit the size of the antenna.  the last link design i
saw was on 433.920 Mc, even there a yagi with decent gain will be rather
large to take with you. also if full duplex was needed the antenna would
have to be brood band, from my experiences that is very hard to do with
a common yagi. 

another thing to consider would be to use a simple antenna (i.e. a 1/4
wave) and higher power.  if this is on 443.92 it would be simple to
raise the power up to 1-3 watts with a simple pa stage. i take it this
would be a fm signal which would allow you to use a non linear amp,
making it more efficient.


as for cost $100 to $150 would be good for me. 


now for some questions.

what freq. is this link on?

what chips are you using for the transmitter and receiver?

what is your website, if any?

what power level will this put out?



btw, i am not a digital guy, cant stand the 1's & 0's, so please keep
that in mind if i stated something that is wrong in this case.   






 
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