David Taylor <djtaylor@bigfoot.com> wrote:
> Underneath the heatshrink sleeving is a piece of brass tube that is
> soldered inside to the coax braid, the centre conductor is then allowed
> to protude the 1/4 wavelength amount, 31mm.

A couple of years ago, Don Widder proposed the "simplest" antenna, but he
specified 32mm for the sleeve and the exposed conductor.
I haven't figured out how far off that is. I wonder if he's at the edge of
the channel range, or maybe free space instead of coax, by mistake.

Once upon a time From Don Widders:

You can just make an antenna out of the end of the LMR195. Remove about 3
inches of the plastic outer 'jacket' of the coax. Then pull the copper
braid back over the remaining jacket. Get a piece of brass tubing at a
hobby shop that will just slide over the braid and cut a piece of the
tubing to 32 mm. Trim away any excess braid. Cut the center conductor so
that it extends exactly 32 mm from where it exits from the braid.

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Clarence A Dold - Hidden Valley (Lake County) CA USA 38.8,-122.5