On 1/15/2014 4:55 PM, Ralph Mowery wrote:
While on the subject of tower bolts, why does Rohn 25g tower use two
differant size bolts on the legs ?



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Obviously none of the respondents have had to mate two obstinate
sections of Rohn 25g together.

The smaller hole is for a drift to force the sections into alignment so
the larger bolt can be installed. Then you have an empty hole just right
for a smaller bolt. I suppose it adds a little strength to the joint,
but not much.

Paul, KD7HB

"Jerry Stuckle" wrote in message
...

Actually, the FCC doesn't limit towers to 200'. But anything over 200'
has to be lighted and registered so it can appear on air navigation
charts. Then there are all kinds of other hassles like ensuring the

You are correct on the limit. I knew I remembered something about 200 feet
but did not recall it correctly.

In the US it seems that you can put up whatever you can afford. Most of the
hams I know have towers from about 40 to 60 feet. A few at 100 to 120. It
all depends on where you are at as to the local and state rules. If you
move into some housing developments they can have a rule of no outside
antenna. Some towns and counties have rules that you can put up a 40 or 50
foot tower.

I talked to one ham on the air and he told me that he lived in a development
and it speciffically stated there could not be any rules on the towers. The
man that started that development was a ham.

In the county I live in there are no rules at this time, but some housing
developments have them and you sort of have to give up your rights to lots
of things if you move in there. I made sure that when I bought a house there
were no rules other than the ones of the state or county.
I only went to 60 feet of tower because that was about the ammount of money
I had to spend and it was as far up as I wanted to climb. I am not afraid
of heights, but not in the physical condition to climb any higher and do
much after I get there.

For Gareth , here is the federal rules from the ARRL website. While the
rules keep the states from making some unreasonable rules, it does not apply
to housing develompnet areas where you sign away your rights if you want to
move into that area.

§97.15 Station antenna structures.

(a) Owners of certain antenna structures more than 60.96 meters (200 feet)
above ground level at the site or located near or at a public use airport
must notify the Federal Aviation Administration and register with the
Commission as required by part 17 of this chapter.

(b) Except as otherwise provided herein, a station antenna structure may be
erected at heights and dimensions sufficient to accommodate amateur service
communications. (State and local regulation of a station antenna structure
must not preclude amateur service communications. Rather, it must reasonably
accommodate such communications and must constitute the minimum practicable
regulation to accomplish the state or local authority's legitimate purpose.
See PRB-1, 101 FCC 2d 952 (1985) for details.)





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"Paul Drahn" wrote in message
...
On 1/15/2014 4:55 PM, Ralph Mowery wrote:
While on the subject of tower bolts, why does Rohn 25g tower use two
differant size bolts on the legs ?

Obviously none of the respondents have had to mate two obstinate sections
of Rohn 25g together.

The smaller hole is for a drift to force the sections into alignment so
the larger bolt can be installed. Then you have an empty hole just right
for a smaller bolt. I suppose it adds a little strength to the joint, but
not much.

Paul, KD7HB

I have helped install a couple of towers and have done that, but did not
know that was the reason.

Have also used that Tower Jack to help out, but only knew about that in
the last 10 or 15 years.



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On 1/17/2014 12:09 PM, Ralph Mowery wrote:

"Paul wrote in message
...
On 1/15/2014 4:55 PM, Ralph Mowery wrote:
While on the subject of tower bolts, why does Rohn 25g tower use two
differant size bolts on the legs ?

Obviously none of the respondents have had to mate two obstinate sections
of Rohn 25g together.

The smaller hole is for a drift to force the sections into alignment so
the larger bolt can be installed. Then you have an empty hole just right
for a smaller bolt. I suppose it adds a little strength to the joint, but
not much.

Paul, KD7HB

I have helped install a couple of towers and have done that, but did not
know that was the reason.

Have also used that Tower Jack to help out, but only knew about that in
the last 10 or 15 years.



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I built a jack a couple of years ago, but have not had a chance to use
it yet.

Paul

"Ralph Mowery" wrote in message
m...


For Gareth , here is the federal rules from the ARRL website. While the
rules keep the states from making some unreasonable rules, it does not apply
to housing develompnet areas where you sign away your rights if you want to
move into that area.

§97.15 Station antenna structures.

(a) Owners of certain antenna structures more than 60.96 meters (200 feet)
above ground level at the site or located near or at a public use airport
must notify the Federal Aviation Administration and register with the
Commission as required by part 17 of this chapter.

(b) Except as otherwise provided herein, a station antenna structure may be
erected at heights and dimensions sufficient to accommodate amateur service
communications. (State and local regulation of a station antenna structure
must not preclude amateur service communications. Rather, it must reasonably
accommodate such communications and must constitute the minimum practicable
regulation to accomplish the state or local authority's legitimate purpose.
See PRB-1, 101 FCC 2d 952 (1985) for details.)

-----ooooo-----

Interesting (Don't know why Outlook Express hasn't quoted you with ""s.

Perhaps it is the vast spaces in your country and the perceived need for
emergency communications over those distances that extends to you those
privileges?

"gareth" wrote in message
...

Interesting (Don't know why Outlook Express hasn't quoted you with ""s.

Perhaps it is the vast spaces in your country and the perceived need for
emergency communications over those distances that extends to you those
privileges?



That hapens to me sometimes when quoting text. Not sure why part of the
time OE puts in the mark like it is suspose to and about one out of 20
times it will not put it in and I often add it.

I think our contry is more about individual freedom. Most of the time the
laws are written as to what you may not do instead of what you can do.
Unless it is for safety or tax reasons, as long as you are not bothering
anyone else, the rules of the land are not too restrictive. Atleast that is
the way the FCC rules were written for hams.

Much of the country is open spaces, or the land is large enough that a tall
tower will not fall on others property if it does fall.



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"Paul Drahn" wrote in message
...

I built a jack a couple of years ago, but have not had a chance to use it
yet.


I built, or really had one of the guys in the shop where I work help build
one for me just before I put up my tower. Built out of scrap material and
in some spare time. Probably cost them $ 200 worth of labor..hi hi.. I
almost hate retirement ( retired 2 years) as I lost access to small pieces
of material and the equipment and people to help make small things. We had
a machine shop that could make almost anything that was not too complicated.
Couple of lathes, shears, benders, milling machines, and don't remember what
this one machine was called (thinking Iron Man) that could punch holes and
various shapes in steel and do some bending of very thick pieces.



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The towers do not always have to be lighted above 200' nor painted.

WVIR's tower is neither!

https://stations.fcc.gov/station-profile/wvir-tv

On 1/17/2014 6:37 PM, Channel Jumper wrote:

The towers do not always have to be lighted above 200' nor painted.

WVIR's tower is neither!

https://stations.fcc.gov/station-profile/wvir-tv



Only if it is sheltered by another structure of greater height.

Otherwise, you are wrong (as usual).

And how do you know how tall it is? Did you get out your trust ruler
and measure it?

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"Jerry Stuckle" wrote in message
...
On 1/17/2014 6:37 PM, Channel Jumper wrote:

The towers do not always have to be lighted above 200' nor painted.

WVIR's tower is neither!

https://stations.fcc.gov/station-profile/wvir-tv



Only if it is sheltered by another structure of greater height.

Otherwise, you are wrong (as usual).

And how do you know how tall it is? Did you get out your trust ruler and
measure it?

You can look up the antenna registeration number. It is listed at whatever
height it is. Seem to remember 98 but not sure if feet or meters. It is
also listed to be painted and lighted to some offical antenna regulation.
Does not say if it is actually painted or lighted, just it meets the
standard.



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