A Rule I learned while working on Apollo at NASA MSC: "Regardless of
how large you make the MTBF of each part ... put enough of them on the
rocket and something will always be broken."
Everyone today seems to want 5 decimal places of precision for the
length of the wire. Your "long mathematical equation" works just fine. 😉
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
Washoe County
On 10/6/2021 2:00 PM, Bob McGraw wrote:
For years I've carried and used a 50 ft spool of #22 insulated
stranded hookup wire. I un-spool the length I guess-ta-mate to be the
required amount, put a 1/2 hitch at the spool the wire comes on, and
toss the spool end into the nearest tree, allowing the spool to hang
down from a limb. The other end connects to a specially designed
banana jack on the camper. When finished operating, just turn the end
loose, the spool drops down, back off the 1/2 hitch and wind the wire
on the original spool. No insulators, rope, heaving lines,
launchers, or other things required.
I also carry a 100 ft spool of #22 in case I wish to put up a longer
wire. In that case I may use the 50 ft spool as a ground radial of
what ever length I may think needed. Some may ask "how long is the
wire antenna?". The answer is a very complex mathematical equation;
" long enough to go from my termination point on the camper to the
desired tree limb".
My viewpoint.......more parts = more issues.
73
Bob, K4TAX
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