Topband: BPL

[Thomas Damboldt]

Hi all,

> At 02:20 PM 8/15/03, KG6DV at cs.com wrote:
> 
> >Look at the NTIS filing, they seem unaware of the posable effects on their 
> >MF/HF systems. Their filing mentioned concerns for their low VHF systems 
> >and then only if they were located close to a power line.
> 
concerning "close to the power line" can result in a fatal misunderstanding of those operating not "close to the power line". The unintended (yet unavoidable) RF fields radiated by BPL do not only propagate as "ground waves" but also as sky waves via the ionosphere. As there may eventually be hundreds or thousands of sources, the sum of the radiated fields - even if only a few milliwatts per source - can spoil the HF spectrum at any place in the world, even at KH7......and not only "close to the power line".

73
Thomas, DJ5DT
17. Aug. 2003