how tall tower???
 

Ask the HOA - They will measure it to the microinch, then tear it down.
Ask the City (County) Engineer -- they will respond "Ain't no tower there"

Seriously -- how about this one

Wait for a sunny day! Measure your shadow. Stanley tools makes a device for
this (;-). Measure the tower's shadow. Calculate the tower height using the
following:


Height of tree Your height

--------------------------------------------------------------------------
=
--------------------------------------------------------------------------

Tree's shadow Your shadow


Alternatively, you can place a calibrated pole upright and measure it's
shadow in place of measuring your shadow.

About 2200 years ago a greek guy - Eratosthenes used geometry to estimate
the circumference of the Earth. Dog gone if he didn't come close!
URL: http://en.wikipedia.org/wiki/Eratosthenes

--
CL -- I doubt, therefore I might be !
Lo! I cast a shadow, therfore I be !


"Tam/WB2TT" wrote in message
...

"lorentsonci" wrote in message
...
I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?

how tall tower???
 

A Boy Scout technique from 55 years ago comes to mind.

It requires one arm, one thumb, and two eyes.

It needs a little geometry associated with similar triangles.

Extend your arm with one eye closed and your thumb at one extreme of
what you want to estimate. Open that eye and close the other. Estimate
the difference in distance between the two observations. Multiply that
distance by 10. Not bad for a first 'gesstimate'.

BTW, do the Boy Scout still teach this?

/s/ DD

lorentsonci wrote:

I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.

how tall tower???
 

On Sun, 28 May 2006 22:31:59 -0500, lorentsonci wrote:
I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.

If in the U.S.A., contact the FCC and get the information from their
database. Elsewise, contact the wireless regulatory agency of the
country that the tower is located in.

Jonesy
--
Marvin L Jones | jonz | W3DHJ | linux
38.24N 104.55W | @ config.com | Jonesy | OS/2
*** Killfiling google posts: http//jonz.net/ng.htm

how tall tower???
 

Allodoxaphobia wrote:
On Sun, 28 May 2006 22:31:59 -0500, lorentsonci wrote:

I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.


If in the U.S.A., contact the FCC and get the information from their
database. Elsewise, contact the wireless regulatory agency of the
country that the tower is located in.

Jonesy
In the USA if it has a light on it then it is over 200 FT tall. If there
is no light on the tower it is less than 200ft tall. 200 ft is the magic
number for the FAA and the FCC for tower lighting.
If you can see the section joins then count them an mult by 20 ft. 20 ft
is the height of the average tower section. Your tower could use 30 or
40 ft sections though. You will have to inspect the tower up close to
estimate the height of a section.

Dave N

how tall tower???
 

"Ed" wrote in message
. 192.196...


Measure the length of the shadow, and record the time. Look up what
the height of the sun was at that pouint in time from tables, and use
geometry.


The original poster didn't indicate he could get to the tower, but if he
could, there's a better way than above that doesn't require "tables".
.... simply measure the length of the tower's shadow. Then with a
yardstick, or equivilent, measure the length of the vertical yardsitck's
shadow. You now know the height and shadow length of the yardstick.
You
also know the shadow length of the tower. The two are proportional.

The height of the yardstick divided by the length of its shadow is equal
to the height of the tower divided by the length of its shadow. A simple
algebraic expression ... easy to solve for the height of the tower.


Ed K7AAT



You are right, I knew there was a trick to it, but couldn't remember it.

Tam

how tall tower???
 

David G. Nagel wrote:
Allodoxaphobia wrote:
On Sun, 28 May 2006 22:31:59 -0500, lorentsonci wrote:

I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.


If in the U.S.A., contact the FCC and get the information from their
database. Elsewise, contact the wireless regulatory agency of the
country that the tower is located in.

Jonesy
In the USA if it has a light on it then it is over 200 FT tall. If there
is no light on the tower it is less than 200ft tall. 200 ft is the magic
number for the FAA and the FCC for tower lighting.
If you can see the section joins then count them an mult by 20 ft. 20 ft
is the height of the average tower section. Your tower could use 30 or
40 ft sections though. You will have to inspect the tower up close to
estimate the height of a section.

Dave N

Almost right, over 200 feet or close to an airport or heliport, in
which case the max unlighted height slopes to zero at the airport
and follows a slope that depends on the type of airport.

Title 47, Part 17.21 and Part 17.17

--
Jim Pennino

Remove .spam.sux to reply.

how tall tower???
 

how tall tower???
 

David G. Nagel wrote:
wrote:

David G. Nagel wrote:

Allodoxaphobia wrote:

On Sun, 28 May 2006 22:31:59 -0500, lorentsonci wrote:


I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.


If in the U.S.A., contact the FCC and get the information from their
database. Elsewise, contact the wireless regulatory agency of the
country that the tower is located in.

Jonesy

In the USA if it has a light on it then it is over 200 FT tall. If there
is no light on the tower it is less than 200ft tall. 200 ft is the magic
number for the FAA and the FCC for tower lighting.
If you can see the section joins then count them an mult by 20 ft. 20 ft
is the height of the average tower section. Your tower could use 30 or
40 ft sections though. You will have to inspect the tower up close to
estimate the height of a section.


Dave N


Almost right, over 200 feet or close to an airport or heliport, in
which case the max unlighted height slopes to zero at the airport
and follows a slope that depends on the type of airport.

Title 47, Part 17.21 and Part 17.17

Correct.... But most cell towers are not near airports.

Correct... But the protected area is 12.2 kilometers in diameter which
means a good number are.

--
Jim Pennino

Remove .spam.sux to reply.

how tall tower???
 

lorentsonci wrote in
:

I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.


That's a tough one, Towers get taller the closer you get to them. You need
to contact the manufacturer or installer.

m

how tall tower???
 

Here is an example of a tall, top loaded tower:

http://www.bslb.org/photo/20050813/n...s/DSC_1806.jpg

http://www.bslb.org/photo/20050813/n...s/DSC_1785.jpg

Looks like SSV tower with 20 foot sections. I estimate that the near tower
is a little over 200 feet high. Also looks like brackish water in the
foreground and far west location.

73, Mac N8TT

--
J. Mc Laughlin; Michigan U.S.A.
Home:
"Dave Platt" wrote in message
...
In article ,
lorentsonci wrote:

I think somone , smarter than me , will have a answer,,,, "you are
driving down the hiway and see a cell/antenna tower, it is off the
hiway but you don't know how far,,,, and you would like to know how
tall the tower is,,,????? Is there a simple (kiss) way to find out?
thanks in advance. cl.

If this is a homework/exam question... well, in that case, stop
reading and go hit your books, OK? You'll be better off in the long
run if you learn to figure such things out for yourself.



If the tower isn't too far away (too close to the visual horizon) then
you can probably treat the distance between you and the tower as a
flat, horizontal surface - that is, ignore the curvature of the earth.

If that's the case, then you can calculate the distance using
trig if you know the distance to the tower and the angular height of
the tower. You can measure the latter with a plastic protractor.

If the road you're on is straight, there's a relatively easy way to
figure out how far away the tower is from the road. Do the following:

- Drive along the road until the tower is directly off to one side -
the line from you to the tower is perpendicular to the road.

- Use a protractor to measure the number of vertical degrees that the
tower covers.

- Make a note of the odometer reading.

- Drive straight, on the road, until you have to look backwards at a
45 degree angle to see the base of the tower, and then stop. Use
the protractor to confirm the angle, so you know right where to stop.

- Take another look at the odometer.

- The difference between the two odometer readings - that is, the
distance you've driven from your starting point to your stopping
point - is identical to the distance from the starting point to the
tower.

- Multiply the distance you drive, by the tangent of the angle which
describes the tower's apparent height at the starting point. This
will be the height of the tower, plus/minus whatever errors crept
in to your measurements.

- Go through the geometry to truly understand why this works.

- Use a fluorite-lens transit and a properly charged flux capacitor to
confirm that there are no thermal or gravitational anomalies which
might have distorted the light or the distance.

If the road is curved, or the land is hilly, or the tower is far
enough away towards the horizon, then you'll need a more complex
approach... e.g. go measure it, or call the owner and ask, or do a
lookup in government records (FCC) to find the operating license
permits for the radios on the tower.

--
Dave Platt AE6EO
Hosting the Jade Warrior home page: http://www.radagast.org/jade-warrior
I do _not_ wish to receive unsolicited commercial email, and I will
boycott any company which has the gall to send me such ads!