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Date: Tue, 16 Mar 2010 15:23:19 -0500
From: "Mike.WE0H" <we0h@gmx.com>
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Subject: Re: LF: 8.97kHz antennas
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Maybe those cables & pipes would radiate some of the signal? Whatever is 
used to make the signal go far away is fine. It just might be worth a 
try to see if the ground loop works in the city. Just like you guys 
figured out how to make a LF antenna radiate good enough with your tiny 
backyards, this VLF antenna might work good enough with all the cables, 
pipes & buildings in the city. Out in the country in the open is always 
best but to figure out how a city dweller can get out on the VLF band 
with an antenna in his backyard, this could get more guys on the air. 
Any antenna is better than no antenna, we have all heard that phrase before.

Mike
WE0H



Roger L wrote:
> Thanks Alan.
> 
> Yes I can understand that poor ground conductivity would result in a 
> larger loop within the ground and that with high conductivity the loop 
> would be very small. With regard to piping and cables, I'm thinking that 
> any such tests would have to be done well away from buildings and 
> property ideally in the middle of a large field out in the country or on 
> a stretch of moorland perhaps well away from cables and pipes. In an 
> urban area cables and pipes are everywhere and anything could be happening.
> 
> 73s
> Roger G3XBM