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LF: RE: Re: Re: Noise cancelling by using optic transmission of RX signa

To: <[email protected]>
Subject: LF: RE: Re: Re: Noise cancelling by using optic transmission of RX signals
From: "James Cowburn" <[email protected]>
Date: Sat, 19 Dec 2009 17:54:35 -0000
In-reply-to: <002501ca80cc$2df97f90$0301a8c0@your91hoehfy9g>
References: <38A51B74B884D74083D7950AD0DD85E828ACB3@File-Server-HST.hst.e-technik.tu-darmstadt.de> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <F115BE2FFFB942B48FA14864D7293A44@JimPC> <001e01ca80b0$392cb0b0$8d01a8c0@JAYDELL> <002501ca80cc$2df97f90$0301a8c0@your91hoehfy9g>
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As opposed to a false resonant antenna?    Troll food!! 

Best wishes and merry Christmas to all


Jim G7NKS







I said recently that the wire connecting these type of mini antennas is in
fact the antenna. It was the same with the Partridge Joy stick of
yesteryears, the long connecting wire to the small loading coil was doing
most of the work.
There is no substitute for a real resonant antenna at the working frequency.
G3KEV


----- Original Message -----
From: <[email protected]>
To: <[email protected]>
Sent: Saturday, December 19, 2009 1:36 PM
Subject: LF: Re: Noise cancelling by using optic transmission of RX signals


> >I think the role of the ground with active whips is often neglected - the
output of the whip preamp
> >is the voltage differential between the whip element and the circuit
ground, so the ground
> >connection is just as much part of the antenna as the whip element itself
is.
>
> That's an important point that is often overlooked or ignored. A mini whip
mounted up at 5 meters is
> a 5 meter antenna. You can easily prove this by mounting it at ground zero
on top of a ground
> screen. Been there, done that.
>
> Jay W1VD  WD2XNS  WE2XGR
>
>




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