Re: LF: Licence / NOVs etc

[Roger Lapthorn <rogerlapthorn@gmail.com>]

Brian,

The official line is, I believe, that any form of communication by electricity, wireless or whatever you call it below 9kHz does need a permit from OFCOM as such communications are covered by the Wireless Telegraphy Act and its amendments. Others may have a more informed view.

Unofficially, I am taking the view that earth-mode at 4W on sub-9kHz is unlikely to cause a problem, so I'm carrying on my tests whilst waiting for an NoV (3 months now waiting patiently).  If I decide to run 100W or more in these tests then I think I should wait for official clearance. Likewise I think others in the UK considering radiated tests using high power on 8.97kHz or thereabouts are waiting.

I'm unsure of lightbeam transmissions: clearly we don't need NoVs to shine torches, use a microwave oven or turn on the headlights, but maybe OFCOM would require it if asked, HI.

73s
Roger G3XBM

On 17 June 2010 20:29, Brian Reay <g8osn.news@gmail.com> wrote:

Not intended as loaded questions or to stir a row:

What are the licence requirements for a VLF transmitter which doesn't use an antenna but "transmits" via the ground?

Are all ("DC to light") frequencies covered by the various acts of Parliament (WTA etc) covering such things on the more widely used frequencies?

As a general comment, I'm finding the various posts re the VLF experiments, esp. those below 10kHz, totally absorbing.

73

Brian

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