[UK-CONTEST] 80m antennas

[Dave Sergeant]

On 22 Apr 2010 at 18:49, Roger G3SXW wrote:

> Callum - there's no such thing as 'average-uk'. Ground varies from clay
> to sand to granite to . . . . within small distances.Geological maps
> helped me decide which house to buy when I saw that one is on the London
> Clay Belt (Thames) and the other wasn't. 73 de Roger/G3SXW.

Can the geological maps tell you this to fine enough accuracy for this? 
My house is built on sand - fortunately with good foundations - and Top 
Band is effectively a right off. But Richard G4ZFE only a few hundred 
yards away is on clay, as is Tony G3OFW at a similar distance. So there 
seems no easy rule.

73 Dave G3YMC

http://www.davesergeant.com