Cheers,
Not to make too big a hoohaw about it, but I am assuming
everyone is thinking about protecting various devices from "radiating
interference". That may be the problem, but I invite you also to consider
another very prevalent cause, partuclarly with transmitters:
the connectors........ If you are using RG58 or RG400, who made up your
antenna lead(s)? If it was you, are you competent to do so? This is not a
snub but a valid question.
I was RMI (radio magnetic interference) chairman of our local
club for many years, sent out to rationalise 'interference' problems
reported by neighbours and hams. The following is my experience in this
matter.
In Amateur Radio, many folk complain of "interference" when in
fact the problem is 'breakthrough' - their devices are 'listening' to
frequencies from which they should be properly shielded. The rest are 95%
caused by faulty connector preparation. If you (or your agent) did the work,
were they qualified? The instructions, to be found most often in the Am Rad
Handbook or by the valid manufacturer, are complete and detailed. If they
were not followed to the letter, faulty connectors are the most prevalent
cause.
As well, the correct model connectors are critical.. just
because it seems the right size does not mean it is the proper connector. In
addition, moisture, and vibration are the enemies of correct transmitting
coaxial fittings - and there are several 'classes' of these as well.
Weatherproof versions have a suffix to denote the specialty.
In sum, I would say if you worried the connectors onto the
coaxial cable without following the instructions to the letter, this may be
the probable cause. Solve that and the 'interference' disappears.
IMO,
Ferg
A064
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