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Posted to sci.electronics.design,alt.binaries.schematics.electronic,sci.electronics.cad,sci.electronics.basics
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Garage Door Opener Range.
"Tom Miller" wrote in message
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"John Fields" wrote in message
...
On Thu, 08 May 2014 18:21:45 -0700, John Larkin
wrote:
On Thu, 08 May 2014 19:44:21 -0500, John Fields
wrote:
On Wed, 07 May 2014 13:27:29 -0700, Jim Thompson
wrote:
This new, very well-insulated, foil-backed, house has one drawback...
the garage door opener range with the garage door closed is only about
20'
Any ideas on how I could extend that range?
...Jim Thompson
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What I'd do would be to drill a hole through the garage wall next to
the door but up high, then connect a length of 50 ohm coax to a
weatherproof 900MHz rubber duckie antenna with a 90 degree mounting
flange/bracket and pass the coax through the hole from the outside
of the garage to the inside.
Next, I'd mount the rubber duckie to the outside wall with the whip
oriented vertically, and weatherize the installation.
Finally, I'd mount another rubber duckie on the inside wall, with
the whip oriented vertically, and connect the coax.
Voila! passive repeater, - probably with some gain - nice clean
install, and your warranty stays intact since you haven't even
touched the holy RX.
John Fields
Gain?
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2.5dB over isotropic.
http://www.terra-wave.com/shop/89096...l27hveoggt6rf4
Whoosh...
It's not at 900 MHz.
Whoosh whoosh...
Or even 1900 MHz. Do you even think before typing?
Whoosh whoosh...
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