Re: LF: Earth-mode or not earth-mode

[Gary - G4WGT <g4wgt@tiscali.co.uk>]

Hi Roger LF,

On 5 February 2011 08:01, Roger Lapthorn <rogerlapthorn@gmail.com> wrote:

Gas pipes are non-metallic I think?

You are correct Roger, the attached photo of my variometer is made on a piece  of gas pipe. It seems to be PTFE or some similar material, I can't melt or soften it using a large hot soldering iron & not even warm in a microwave oven.

73

Gary - G4WGT.

Not sure I like the idea of connecting many watts of VLF power into high voltage pylons or gas pipes. In the UK we would be locked up as suspected terrorists!

Having a few watts VLF piggyback a water pipe connected to my central heating radiators sounds as if it should be more legitimate. After all,  we use such connections often as the ground systems for verticals.

This raises the question about the legality of putting VLF signals along utilities - is this actually permitted? After all, there are intercoms and data systems that intentionally use the mains electricity wiring. Anyone know what IS permitted?

73s
Roger

Via my 2.4GHz handheld (iPod Touch 4g)

On 4 Feb 2011, at 23:10, Stefan Schäfer <schaefer@iup.uni-heidelberg.de> wrote:

> Jacek,
>
> Am 04.02.2011 23:58, schrieb Jacek Lipkowski:
>>
>> btw. i have an international gas pipeline nearby: http://en.wikipedia.org/wiki/Yamal%E2%80%93Europe_pipeline
>> opportunity for dx maybe? :)
>
> At least it would be a good radial for a VLF antenna ;-) Dou you think there is a conductive (metallic) contact up to north Russia? Would be interesting to do some tests there and maybe observe the same results as Roger.This would be a nice antenna for ELF but i'm not sure if the gas provider would like that DX was done on his pipeline ;-)
>
> 73, Stefan
>

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