Hi Janek, yes I agree a long fence wire and a local high power station would be 
enough for that. Also the lack of any obvious mixing association and the 
closeness to Lakihegy do push ideas in the direction of ICM. It will be 
interesting to see if Paul-Henrik can tie it down.

Best Wishes
Alan G3NYK

--- On Tue, 8/12/09, Jacek Lipkowski <[email protected]> wrote:

> From: Jacek Lipkowski <[email protected]>
> Subject: Re: LF: Broadcast audio splatter on 136kHz
> To: [email protected]
> Date: Tuesday, 8 December, 2009, 9:06
> Hi Alan
> 
> Just like you said - i have no personal expierience with
> the "rusty bolt" effect on LF/MF, and am extrapolating HF
> ideas down to LF :) Hypotheticaly speaking the structure
> size to get enough voltage into a metal-metal oxide junction
> is not that great. A metal fence >100m long should be
> enough for local signals.
> 
> Paul-Henrik gave two frequencies: 171kHz and 225kHz (i
> can't see how they can give around 135.4kHz via mixing, so
> there is probably a third station involved). These could be
> Radio Russia from Kaliningrad (600kW) and Warsaw 1 from
> Solec Kujawski (1MW). Obviously the two are not local to
> him, so ICM might be probable (the "rusty bolt in the sky"
> :).
> 
> VY 73
> 
> Jacek / SQ5BPF
> 
>