Re: Extend Range

["Rich" <Never@xxxxxxx>]

I could run a piece of coax 20 ft to the edge of the room shorting up the
transmitting distance.




"alarman" <alarman2000@xxxxxxxxx> wrote in message
news:rpD4f.77592$lq6.23052@xxxxxxxxxxxxx
>
> "bdolph" <bdolph@xxxxxxxxxxx> wrote in message
> news:U7D4f.2468$4O1.2194@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> > Many years ago I used to make a dipole to extend the range of these
> > transmitters.  I could get them to transmit across a street to another
> > house.  It must be the correct dimensions and trimmed to the
> > transmitters frequency.   Somebody as linear may have the dimensions to
> > build this.  Let us know if you find them.
>
> wavelength in meters = 300 / frequency in MHz
>
> A 433 MHz transmitter has a wavelength of .6928406 meters, or 27.270206
> inches. You HAM guys can check my math, but
> theoretically, you could make a quarter-wave antenna of approx. 6.82
inches.
>
> js
>
>