I've never heard the term "Multiple Protective Earthing" system before;
maybe it's called something else here in the states or by other vendors?
Also unfamiliar with an "electricity supply board timer". What's the
"rate" you're refering to? KiloWatt-Hours? How could you convert daytime
rate to nighttime?
As far as AC filtering, not sure what's available in the UK, but I use
Tripp-Lite Isobar for filtering and AC surge suppression on all ham
equipment. Another vendor is Polyphaser. They make whole house protection
de ed -K0iL
From: George Shaw
Sent: Sunday, 19 September, 2004 12:05 PM
Subject: [RFI] PME (Was: Earth isolation)
Folks great info, I learnt a lot, though my original question got lost
somewhere in the math :-) thanks to all who contributed to the discussion.
The original question was more to do with interference caused by a nearby
antenna used by another radio operator (not a ham) getting to my audio
equipment which is connected to my TxRx. My own equipment is near quiet as
have proven when the neighbour was not operating. I suspect that my mains
picking up the Tx from next door, I was thinking of a mains filter, what
type, who makes them (240V-50Hz)
Now another question. Any thoughts or comments/data on Protective Multiple
Earthing systems and interference or use near/in radio installations?
Also anyone ever had a electricity supply board timer (used to change for
daytime high rate to evening/night time low rate) cause interference to
radio or telephone circuits by introducing a click, click, click steady
George Shaw MI3GTO / 2I0GTO
" Any Sufficiently Advanced Technology
is Indistinguishable from Magic"
---Arthur C. Clarke
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