[SixClub] Band open
Roger on six
50MHz at rogerhalstead.com
Sat Apr 18 23:19:42 EDT 2015
Sorry about the long post.
I gotta get that 7L C3i back up.
I was surprised to find that the solder on the coax connector and both
ends of the hairpin had dissolved. I had given them 3 or 4 coats of
clear Krylon, but it and the solder were gone in less than 10 years.
Both 12L 2-meter Yagi antennas are in the same condition. I may use
epoxy covered with liquid electrical tape over the solder joints this
time although the liquid electrical tape alone has worked well where I
have used it.
About the only industrial area that places us down wind is Chicago and
the very SW corner of lower Michigan. (160 to 220 miles) So apparently
we receive a lot of acid rain from somewhere.
At 2 weeks the concrete in the base for the LM470 is to the point where
we can mount the tower raising fixture, but another two weeks before the
tower goes up. I still have to build a control box, connect the limit
switches and check their operation. THEN, maybe I can get the tribander
(C19XR) up and get the 7L C3i 6-meter ant up on the 45G. The goal is to
put it 12 to 15' above the top of the tower where the 3L 40 meter Yagi
will go. Probllem is, I have to hire all that done or depend on
volunteers and I'm a bit uncomfortable havig volunteers do that kind of
work.
I'd really like to replace that 45G with a heavy duty crank up, but I
think even a used one is out of my budget. THEN AGAIN last summer the
back yard never dried enough to get the equipment back there to dig the
hole. The base for the 45G is no where near large enough to support a
crank up the size of the LM470, let alone a BIG crank up. Had I known
I would no longer be able to climb, I'd have installed a major crank up
instead of the 45G. Back then the yard dried enough to support a
concrete truck with a 10 yard load. I also had a good job and could
have afforded the tower. A pension and SS don't quite cut it.
Times change: We've been here since 84. Until about 6 or so years ago,
the yard would dry up and turn brown around the first of August. Since
then we've had to mow the grass until it gets too cold for it to grow.
(late September or even well into October)
The contractor had to hand dig the 4 X 4 X 7' D hole for the LM470 and
"wheelbarrow" the concrete about 150 feet. They dug the hole and filled
it with concrete (two separate operations and days) in an almost
unbelievable time. Spec called for a 2500 psi mix. We used a very
stiff, 3500 psi mix. As for slump test, a pile made, cured with no
noticeable slump.
We ended up putting the base on the N side of the shop which is too
close to the woods for comfort. Those trees are "trash trees". They are
very soft and fast growing trees. They only reach 6 to 8 inches in
diameter and 70 to 80 feet tall and then die. The wood deteriorates
quickly and they fall in one or two years after dying. With the tower
extended, they can't reach the antenna, but with it retracted because of
wind, they could easily remove elements. I wish we'd have put it to
the W of the shop, but that ground turns to peat "somewhere". That
would have been about 30 feet from the NW guy anchor for the 45G and we
had to form up that hole because of the poor soil. I think we would
have needed a base at least twice the normal size at that Western
location although I may end up having another rerod base built and
install a base out there.
The new, larger base comes with several problems. A truck with 5 yards
did a number on my driveway. What would one with 8 to 10 yards do
although the base would be much drier. The base will be drier, but we
would moving nearly twice as much concrete almost another 100 feet. So,
we'd need at least 5 on wheelbarrows instead of 3. So I figure that new
base might cost more than what I have in the entire 100' 45G
installation. Thinking of it in that light, iI think I just convinced
myself not to do it unless I win the lottery (If I buy a ticket) and
then I'd build a new, larger home on 10 or more acres for an antenna
farm.probably won't get done. So I hope I can get permission to cut
enough of those "trash trees" to make the current location safe.
73
Roger (K8RI)
On 4/17/2015 12:43 PM, Benedict Cruise wrote:
> Good opening in west moving nw
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