[MRCA] 60 Meter portable operation questions
Robert Nickels
ranickel at comcast.net
Fri Jan 6 10:51:32 EST 2017
On 1/5/2017 8:16 PM, Gene Smar wrote:
>
> I’m just getting around to putting in my two cents on this item
>
I guess I will to, although in large part I will just pass along what I
have been told by others who were more experienced with portable field
operation, primarly KB0SFP, and had to learn for myself that he was
right about vertical antennas. I've seen it proven many times, on both
ends of the circuit, that a 30 ft. Jackite pole with a wire up the
center, ground-mounted with three 30 ft. long counterpoise wires
arranged in a "crows foot" pattern at the base will perform as well on
40 meters as any comparable wire antenna. Of course it is a
quarter-wave on 40 which helps, but 60 meter operation is very
satisfactory with an auto- or manual tuner. The same is true for the
higher HF frequencies, and an autotuner like an SGC or marinet type at
the base makes for a very simple all-band antenna that just works.
Advantages of a vertical include quick setup requiring only one support
(takes me about 3 minutes), multi-band operation with a tuner, and the
fact that vertical real-estate is generally easier to come by than
enough open space to string up wires, not to mention support the ends.
Some have even installed Jackite poles as semi-permanent antennas by
simply adding a few wraps of electrical tape above the point where the
sections are friction-fit, to prevent the upper section of slipping with
temperature changes. Since the surface area is small they hold up
well in windy conditions.
It's easy to modify the Jackite pole to accommodate a wire inside the
sections (just attach something large enough to prevent the top end of
the wire from sliding back down), and there's already a set of pegs to
wind it on for storage when telescoped together (< 4 ft). Standard
conduit hangers from the hardware aisle make it easy to mount these
poles to anything or a ground mast or tripod-type mounting. And if
you look for them, you can find them in a nice shade of green or "Army
Camo"!
73, Bob W9RAN
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