Jon,
A proper RF Probe is usable up to 500 MHz and beyond.
If you are going to use an RF Probe at VHF and UHF bands, then it will
need to be shielded from stray radiation. In your situation, you will
only be using it up to 22 MHz, and shielding it is not necessary. As
has been said, if you want to enclose it in something, just use whatever
you have available, or simply wrap it with tape. No enclosure is needed
as long as you do not contact the probe parts while doing a measurement.
Hopefully that provides some reasons for the differences of opinion you
see on the websites - it all depends on the frequency and other
conditions where you will be using it.
73,
Don W3FPR
Jon Perelstein wrote:
The web sites I've looked at seem to imply that I need to put the probe in some
sort of metal
shielding (thus the copper pipe for example), but some of your responses seem
to imply that I can
just leave it in the open. Is that correct? Can I just leave the circuitry in
the open? Or do I
have to mount it in something -- in which case I'm back to the problem of what
I mount it inside
of and how to mount it inside (e.g., insulators, mounting hardware).
AM
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