Re: LF: Re: 500kHz attenuation graphs?

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Subject:	Re: LF: Re: 500kHz attenuation graphs?
From:	Roger Lapthorn <[email protected]>
Date:	Wed, 4 Nov 2009 22:48:19 +0000
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Thanks Ian. At first glance this looks most useful.

73s
Roger G3XBM

2009/11/4 Ian Marsh <[email protected]>

Wonder if this would help. It's a free BBC document on the estimation of LF/MF broadcast service areas. There are graphs for the 200 KHz to 1500 KHz region for differing ground conductivities. It's available at:

http://downloads.bbc.co.uk/rd/pubs/reports/1975-01.pdf

Older editions of the NAB Engineering Handbook at least had graphs for the MW broadcast band if I remember correctly but someone seems to have lifted our work copy and the latest edition is priced at $199.

Cheers

Ian / G4EXD

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