300 meter Radio Tower Crash in the Netherlands!

[The F Mister]

60 meters concrete, 60 meters steel. No guys. Lisbon. I consider it a nice looking tower...

http://radiomap.eu/pt/lisboa_distrito/monsanto_05.jpg

120 meter is not that much. The look of the structure is somewhat inherit to the height of the tower. I mean, beyond a certain point you just need guys to support if you like them or not.

 

[The F Mister]

Apparently they do know how to make towers in Barcelona
http://nl.wikipedia.org/wiki/Bestand:Torre_de_comunicacions_de_Montjuic1_-_Barcelona_(Catalunya).jpg

 

[davideduardo]

Here's a question:

How come in Europe and some parts of Asia, the transmitters are 1/2 way up the tower in what is a concrete silo with a tower attached to the top? Wouldn't it be easier and cheaper to build a self supporter or big guyed tower and keep all of the equipment at the bottom?

Always wondered why you never see these in the U.S.

Canada has a nice on in Toronto... very efficient land use for a city on a lakeshore.

US has lots of land, which Europe does not have. In reverse, that is sort of why public transit works in Europe and hardly works at all in the US.

Self supporting structures take less land, and putting the transmitters a hundred meters or so above ground means microwave and communications antennae can feed right to the transmitters. The higher position is also more efficient for cooling.

In many cases, government owned radio and TV has built the structures, so cost is less... or was less... of a factor.

 

[PTBoardOp94]

Apparently they do know how to make towers in Barcelona
http://nl.wikipedia.org/wiki/Bestand:Torre_de_comunicacions_de_Montjuic1_-_Barcelona_(Catalunya).jpg

This structure is in the center of Olympic Park in Barcelona. Some idiot American on his trip to Spain assumed that was a structure used to house the Olympic flame.

The idiot American was me, if that wasn't clear. :

 

[gtomas]

David hits the nail on the head on all points...

Speaking of various transmitter towers, this is the one in Zagreb, Croatia, where I live. It was also government built. Currently it carries 3 DVB-T multiplexes and 6 FM radio stations (that have regional or national coverage). One of which (Radio 101) I used to work for

http://igorfuna.com/transmitting-sites/croatia/sljeme

There are of course numerous microwave links on the tower, not just for broadcast, but for telephony and telecommunications etc.


Regards,
Goran Tomas

 

[DudeFan]

Here's another impressive concrete self-supporter. It replaced a guyed hollow steel tube that collapsed in the wind.

http://www.thebigtower.com/live/EmleyMoor/Index.htm

 

[DutchGuyOnAir]

Close ups of the tower fire and collapse: http://fmtvdx.eu/zendmast/smilde/hoogersmilde17.html

 

[rrsounds]

Here's a question:

How come in Europe and some parts of Asia, the transmitters are 1/2 way up the tower in what is a concrete silo with a tower attached to the top? Wouldn't it be easier and cheaper to build a self supporter or big guyed tower and keep all of the equipment at the bottom?

Always wondered why you never see these in the U.S.

Compare the line loss of mains power versus RF power over a given distance...ideally, for efficiency's sake you want the transmitter as close to the antenna as possible. Plus, you only need one or two electrical feeds as opposed to at least one feedline per antenna...and how many antennas do you think were on that tower? The physical construction cost of having the transmitter up next to the antenna might not make sense in an environment where every signal has its own individual tower, but the more clients there are on a tower, the more they can share common costs. Especially in those countries where all the RF generation/maintenance/QC is the responsibility of one organization, I'm sure at some point it all adds up.

Close ups of the tower fire and collapse: http://fmtvdx.eu/zendmast/smilde/hoogersmilde17.html

Amazing photos! How about those flaying guy wires in pic 11 and 12! They look like horse tails!!

Kind Regards,
David