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LF: Re: Noise cancelling by using optic transmission of RX signals

from [jrusgrove] [Permanent Link][Original]
To: <[email protected]>
Subject: LF: Re: Noise cancelling by using optic transmission of RX signals
From: <[email protected]>
Date: Sat, 19 Dec 2009 08:36:08 -0500
References: <38A51B74B884D74083D7950AD0DD85E828ACB3@File-Server-HST.hst.e-technik.tu-darmstadt.de> <[email protected]> <[email protected]> <[email protected]> <[email protected]> <F115BE2FFFB942B48FA14864D7293A44@JimPC>
Reply-to: [email protected]
Sender: [email protected]
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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