[Lowfer] Re: Antenna Question

[Mike Staines]

Thanks, Warren.
Guess I have to dig out the arrows and sling-shot.

73,
mike
___________________________________
Quidquid latine dictum sit, altum sonatur.
<Whatever is said in Latin sounds profound.>
----- Original Message ----- 
From: <k2ors at comcast.net>
To: <lowfer at mailman.qth.net>
Sent: Saturday, November 17, 2007 3:23 PM
Subject: [Lowfer] Re: Antenna Question


> Mike,
>
>>that it would be MUCH easier for me to install the Ashlock loop in the =
>>horizontal plane rather than the typical vertical.
>
>   Except that its the vertical sections that do the useful radiating.
> At LF and VLF all signals are vertically polarized. The fact that the 
> earth is a relatievly good conductor at these frequencies means that the 
> ground would effectively 'short circuit' any horizontal electric field 
> gradients.
>
> See the excellent article by Adcock which I quote below:
>
> http://www.lwca.org/library/lfprop/adcock/lfprop1.htm
>
> "  Before going too far, it should be pointed out that all low frequency 
> transmissions are vertically polarised only. In fact, it is almost 
> impossible to radiate any horizontal component unless you are transmitting 
> from an aeroplane. Radiation of vertical polarisation was referred to in 
> an earlier article (Ref. 3). Some horizontal component can exist in the 
> received signal, and this will be discussed later."
>
>
> --
> 73 Warren K2ORS
> WD2XGJ     136-140kHz
> WD2XSH/23 505-510kHz
> WE2XEB/2   160-189kHz
> WE2XGR/1 505-515kHz
>
> FN42hi
> http://www.w4dex.com/wd2xgj.htm
> _______________________________________________
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