N4A Iota Expedition
July 2007

N4A Victory!  Photo of the 2007 NA expedition Plaque
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Our Chariot Awaits

The boat at the docks in Davis, NC


Dockside

The view from the dock.


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How Far?

Yeah, that looks like more than 200 yards....


Curious Native

The natives seem both friendly and curious about these newcomers.


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Another Local

More interest from the locals. This one seems less friendly.


Land Ho!

Approaching the N4A QTH


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N4A-Facing Europe

The view from the dunes at N4A facing Europe.


N4A Hooch
Higher-res version
N4A temporary quarters for the weekend.  The small hut in the foreground is the generator housing.


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N4A Hooch-with antennas
Higher-res version
N4A Hooch-View from the sea side, dressed out with the antennas.


N4A Antennas
Higher-res version
N4A antenna setup. One 33 foot mast, with 40 meters dipoles.


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N4YDU

-Thinking positive thoughts


W4KAZ

Better turn the keyer speed down a bit more...


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N4A run station

The run station: Ten Tec Delta


Sunset
Higher-res version
The sun goes down Saturday evening and the rates go up!


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***

N4A Antenna Support Gear Close-ups
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Hi-res version
A bundle of three mast sections, taped together for storage. DON'T get tape or other sticky gook on the male ends of the joints! This year, sand in the joints caused us a bit of trouble on take-down. I think I'll try using a dry graphite lubricant on the joints next time I use the mast. I'll also have a couple of strap wrenches handy to help move the stubborn joints.
This tubing was obtained from K4TMC, The Mast Company. Henry has lots of other interesting items too.


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Hi-res version
Close up of the male end of the section joints.


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Hi-res version
End on Close up of the male end of the section joints.


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Hi-res version
One of the guy stakes cut from pressure treated deck balusters. Its 21 inches(about 53 cm) long and 2.5 inches(6cm) square. Perfect for use in the sand. Easy to drive and easy to remove, with good holding power.


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Hi-res version
Photo of the hinge pin and guy plate(two seperate pieces), with the hinge pin u-bolted to a 3 foot( about 1 meter) long aluminum rod. The aluminum rod was bent while raising the mast, so a steel rod or tube would be a better choice. Some sort of extension is required for holding in the sand at a beach.


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Hi-res version
Closer view of the hinge and guy plate.


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Hi-res version
Close up view of home-brew hinge pin machined from a short length of aluminum square and attached to an aluminum pin.


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Hi-res version
Close up of a 'ground anchor' purchased from Harbor Freight Tools. The close up shows the set screw and bushings used to hold a mast section. (Note: the ground anchors are apparently now a discontinued item at Harbor Freight.)


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Hi-res version
The whole pole anchor. This was perfect for use in deploying the vertical antennas quickly, and made a solid base. One section of surplus mast was inserted into this anchor and the verticals were attached to the mast about four feet above ground level. We used four radials on each vertical, but the water table was high enough that a four foot ground rod may have been sufficient.


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