Could you tell the differience between an antenna at 40 ft or at 50 ft while
standing under it unless they were side by side. Not as easy as it may look.
I would go with loops in the 50 ft trees. Black covered # 16 ga stranded wire
(black guy ropes) and a spud cannon. What the Zoning inspector dosenot see
is usally not a problem.
Jerry W2JCN
-----Original Message-----
From: Paul Rollinson <Paulrollinson@sbcglobal.net>
To: 'STEVE NOTEBOOK' <stephen.tripp@snet.net>; 'George Sintchak'
<wa2vnv@optonline.net>; 'Patrick Thomas' <p-thomas@mindspring.com>;
vhfcontesting <vhfcontesting@contesting.com>
Sent: Fri, Jul 22, 2016 9:21 am
Subject: Re: [VHFcontesting] Height vs. foliage
Telescoping towers have a permanent height and a temporary height. My
permanent with mast is 40ft and temporarily (for contest) at 90'.
A lot easier to tell them it's a 22' telescoping tower and let them ask more
questions.
Thanks,
Paul Rollinson
Rollinson Associates
860-928-5147
860-928-3844 Fax
860-208-8814 Cell/Text
Paulrollinson@sbcglobal.net
Representing Component Part
Manufacturers for over 35 years
-----Original Message-----
From: VHFcontesting [mailto:vhfcontesting-bounces@contesting.com] On Behalf
Of STEVE NOTEBOOK
Sent: Friday, July 22, 2016 9:08 AM
To: George Sintchak; Patrick Thomas; vhfcontesting@contesting.com
Subject: Re: [VHFcontesting] Height vs. foliage
Hi Patrick and George,
George has given you a good suggestion using a house bracketed tower. Try
and find a Rohn45 which is much stronger and will support a lot more without
guys but of course more costly. I have 2 of these bracketed on my house at
20' and on my shed at 15' and no guys. The house one has supported a 6m 5ele
M2, 15' 2m yagi, 222 yagi, stacked
432 FO22, 903 looper, 1296 looper and a dual band vertical at the top. All
on a 20' mast with 14' above the thrust bearing. The other has a 6ele HF log
and now the 6m 5ele M2. I have changed the house tower to now support only
vertically stacked 12ele FO-12 on 2m and stacked
222 yagis in between with the whip at top. As far as safety goes the
original lacked but the trick I used was rope guys tied off at bottom of the
tower and when a big storm was coming I would run them out to trees where I
had eye hooks installed.
As far as crank up tilt over towers go, should you not be able to find a
used one be prepared to take a 2nd mortgage out. I have a 72' Tashjian
(previous Triax company) and it was pricey and a lot of work to install. I
paid over $3000 to have it shipped from CA to CT. The total cost was close
to 20k. The other option is to introduce the trees to a chain saw if on your
property. Topping trees is also a good idea. They will look ugly the first
year but will grow out the next and look fine, speaking from experience.
The goal is to overload the tower to just short of falling. This takes a lot
of guts with trials and errors. I have broken a lot of rules but never lost
a tower.
Just make sure your tower meets the "fall zone" criteria. Neighbors get
upset when it comes down in their yard or worse on their house.
If you wish, I will send tower pictures you might not want to duplicate at
home.
FYI, I have seen George's Rohn 25 and it too is overloaded but is guyed
which is much more forgiving.
73's Steve
K1IIG
HF-3ghz + 10ghz.
Patrick,
Assuming moving your home to higher ground location is not an option, a roof
tripod will be a (relatively cheap) option and give you a reasonable
improvement. A better solution would be a fixed tower (Rohn 25G) with a
house bracket at one end of the house. That could give you 25-40 ft above
your roof without guys if you don't overload it at the top. Do you climb
towers? Or you could use a Hazer or a bucket truck for antenna work. Another
way would be to use a hinged base and tilt it over for antenna work.
What kind of trees are around you and do they lose their leaves in winter?
How far are the trees from your antennas? Is your terrain flat around you
for several miles - no big hills in your most favored direction? Always
compromises to consider.
73's, George, WA2VNV
HF+50-1296, SOLP, FN30kv
146.760 Analog/448.825 UHF DMR
> Speaking of VHF contesting, and my ongoing poor results with my
> below-roof-mounted 2m beam at the home QTH, I figured I would ask the
> experts here for some advice.
>
> Operating under the knowledge that more height is better, I am already
> at a disadvantage being about 15-20' below average terrain.
> Additionally I am surrounded by extremely dense trees covering all
> heights up to about 50'. The city has an ordinance limiting antennas
> to 42', although there is provision for a variance.
>
> Assuming I come across $5-10k, I believe I could legally get away with
> putting in a freestanding 70' crank-up tower, but so far I have other
> financial priorities, and I haven't yet won the lottery.
>
> So here's the punchline: Is it worth getting a small tower or
> roof-mount quadpod (total height 25-40 ft), knowing the antenna will
> still being surrounded by trees? Or will I be happier in the long run
> saving my pennies and concrete, and just roving until I can afford
something taller?
> Due to my lot configuration, guying is not an option, but are there
> any other permanent-mounted, great-lakes-weather-resistant, tall
> options out there I should consider? I expect to operate up to 23cm,
> as possible, but would expect most "serious" work would be only up to 2m.
>
> Thanks for any advice,
>
> Patrick / KB8DGC
>
>
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> VHFcontesting@contesting.com
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