Re: Extend Range

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

AND if you ran that out a few more feet...you could just run a wire to the
door/window.


"petem" <petem001@xxxxxxxxx> wrote in message
news:InE4f.6253$Ms1.435542@xxxxxxxxxxxxxxxxxxxxxx
| if you use twice the length you have yourself a 1/2 wave antenna..
|
| 4 time a full length antenna..
|
| anything between and you have a un tuned antenna witch is usually worst
then
| no antenna
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|
| "Rich" <Never@xxxxxxx> a écrit dans le message de
| news: -s6dnWD9LfCSlc7eRVn-tQ@xxxxxxxxxxxxxx
| > What would happen if I add a longer wire to the receiver?
| >
| >
| >
| >
| > "alarman" <alarman2000@xxxxxxxxx> wrote in message
| > news:rpD4f.77592$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
| >>
| >>
| >
| >
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