[Antennas] How to break a Faraday GRID?

Wed, 11 Jun 2003 06:02:15 -0400

If you are going to put an antenna on the roof and run a feedline into the house, 
why not connect the feedline directly to the radio?

I tried this "passive repeater" arrangement recently on 900 MHz with a pair of 
antennas connected by about 50 feet of coax.
They were set up along some hallways in a hospital and intended to help pass a 
signal to a distant ACTIVE repeater. The results were pretty dismal!

Theoretically it should work, but I am an empricist. If it doesn't work, you have to 
do something else!

On 10 Jun 2003 at 15:54, Chris BONDE wrote:

> Awhile back someone was talking about a 'passive repeater'.  Others
> mentioned the use thereof in an office and in a house below the
> horizon to the main repeater.  If you house is a FG then maybe a
> passive repeater would work.  The only point would be that the
> bandwidth may not be too great.  I have never used one so maybe
> someone can comment.
> 
> Put an antenna for Rx on the roof, run the wire into the house then
> put an antenna where you will be having the receiver.  Some clain that
> this will work for cell phones in an office.
> 
> Donno?
> 
> Chris opr VE7HCB
> 
> 
> At 04:09 PM 2003-06-10 -0700, you wrote:
> >Thanks Dave for your information, in such case (and if I understood
> >correctly) I have to feed an external wire at the same time that I
> >feed my indoor antenna (for instance a small magnetic loop), is that
> >what you mean?
> >
> >If so, ok I will try it, I suppose that such wire will have to be
> >resonant in the same band as the antenna does.
> >
> >Thanks for the reference, I will search on that.
> >
> >73s Juan
> >At 10/06/2003, you wrote:
> >>If you could place a wire on the "outside" of the grid and feed the
> >>wire, maybe the wire would induce currents in the grid which would
> >>not be balanced in all directions and you would get some sort of
> >>radiation.   This might be similar to the DDRR antenna.
> >>
> >>Go to http://www.google.com , and search on DDRR ANTENNA for more
> >>data.
> >>
> >>Good luck with what ever you try.
> >>
> >>73,  Dave, N3HE
> 
> 
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