A tower is a self-supporting or cantilevered structure, while a mast is held up by stays or guys.
Both towers and masts have limited floor space and are non-building structures, as opposed to regular buildings which have greater floor space for occupancy.
The Petronius Compliant Tower is an oil platform standing 2100 ft or 640 m (to the top of the spire) and is the tallest non-guyed structure in existence but is mostly underwater.
A mast is a man-made support structure, commonly used on sailing ships as support for sails, or on land as radio masts and towers used to support telecommunication equipment such as radio antennas ("aerials" in the UK).
Most of the taller masts are located in the United States, where a prevalence of masts of around 2000 feet (609.6 m) in height is the result of special rules in that country limiting structures and objects taller than 2000 feet.
The Petronius Compliant Tower is an oil platform standing 2100 ft or 640 m (to the top of the spire) and is the tallest non-guyed structure in existence but is mostly underwater.
en.wikipedia.org /wiki/List_of_masts (331 words)
List of masts(Site not responding. Last check: 2007-10-16)
Pylon of Elbe crossing 2 - a freestanding steel framework tower used as pylon for four circuits of 380 kV.
Towers and buildings with masts on them (that are a hybrid) are in their own list.
Two shorter towers may be a better option the one taller one, for example, or a higher tower might not be useful if the signal is blocked by terrain nor if all the listeners are in a concentrated area and a higher tower cannot pay for itself.
list-of-masts.ask.dyndns.dk (1277 words)
List of masts - Encyclopedia, History, Geography and Biography(Site not responding. Last check: 2007-10-16)
There is often crossover in term usage as some skyscraper use the tower term, some towers use the mast term, and ironically 'skyscraper' has some word heritage from references to high sailboat masts.
Top masts are ranked by pinnacle height; in the case of a tie, the older structure is ranked as higher.
See Radio masts and towers for more info on masts and related structures.
List of masts(Site not responding. Last check: 2007-10-16)
While commonly used on sailing ships as support for sails, radio masts and towers are also used for telecommunication equipment such as radio antennas, also known as aerials in the UK.
For other high structures, see List of skyscrapers, List of towers, or the all-encompassing List of the world's tallest structures.
For general information about masts and related structures, see the main article: Radio masts and towers.
List of the world's tallest structures - Encyclopedia, History, Geography and Biography(Site not responding. Last check: 2007-10-16)
This is a list of the world's tallest structures, past and present of any type.
Scattered among these are other structures including oil platforms, electrical towers, bridge towers, etc. List is organized by absolute height since it includes many different classes of structures.
For categorized lists of high structures, see List of skyscrapers, List of towers and List of masts.
Even better would be two 100-foot towers, but that's beyond the scope of most MWers.
As for the null, it could be due to a nearby building or tower phased against your vertical by an effect called re- radiation.
Big squawk FMs and TVs are a problem here...WNTC-TV-9 and WITN-7; and WERO-99.9 and WNCT-FM- 107.9 (last two 100 kW) would be a problem with an active antenna unless I chose transistors carefully.
The agent went to the station's transmitter site and found a sign on the tower
The noted violations involve Ramh's failure to maintain a main studio management and staff presence, and its failure to establish monitoring procedures to ensure compliance with authorized operating power, mode of operation, and AM directional system parameters.
A building located at the station's tower site appeared to be the
