OT: TV Tower.

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I know this is OT, but I respect the opinion of many here so here it goes.
I just bought a used 40' TV tower. $75 bucks. 45 miles asthecrowflies from Detroit I will get about 36 channels a dozen or so HDTV. FREE I walk the dog by this guy's house and he was wrenching his BMW motorcycle so I stopped in and asked him about that nice shiny tower he had... he showed me ...... incredible picture now it is all digital. A dozen are HDTV... for FREE!!!! There's never fuck-all on anyway... I pay for 150 channels of pure unadulterated crap. Between Netflix and FREE OTA TV... I'm saving some real Erdinger money now...
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"Robatoy" wrote:

------------------------------- And your question is?
BTW, run lots of stays to keep that tower in pure compression.
Lew
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???
So is this a tower or is it a mast?
A tower is free-standing like the Eifel or Blackpool, a mast is a slim structure supported by guys (stay wires if you prefer) like on a ship.
--
Stuart Winsor




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It is a self standing tower. A 4-foot section of mast is on top driven by a rotor. The footprint is triangular.
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In article

Ta. Stay wires would be redundant then unless you are worried about /very/ severe winds.
--
Stuart Winsor




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On 8/12/2011 12:52 AM, Stuart wrote:

Nope.
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On 08/12/2011 02:52 AM, Stuart wrote:

That depends...some towers are not ment to be true free standing. Most expensive towers can be true free standing.
--
All the Best & 73's
Dale Miller, KC2CBD
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I am a retired transmitter engineer, having spent most of my working life in broadcast, and the definition I gave is the correct one.
Any structure requiring stay wires is a mast whether it is a pole a few inches in diameter or a TV mast 1000ft high with a much larger cross section, including such as the mast at Waltham-in-the Wolds, which is an enclosed steel cylinder having a lift up its inside capable of carrying four men at a time.
As you say, towers are expensive so tend to be used only up to a couple of hundred feet. The notable exception in the UK, is the concrete tower at Emley Moor - which replaced a previous mast, like the one at Waltham, which fell down.
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Stuart Winsor




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On 08/14/2011 09:36 AM, Stuart wrote:

Then explain these guyed towers. http://www.rohnnet.com/rohn-45g-tower IMO if it is triangular or square it is not a mast but a tower, if round than it is a mast.
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Dale Miller, KC2CBD
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Sorry but masts can be any cross sectional shape, though triangular is very common due to maximum strength for minimum material. The only governing principal is whether it is self supporting or not.
http://www.alandick.com/broadcast_towers_masts.htm
It is a pity there are no illustrations but the text is clear enough, referring to "Self supporting /towers/" and "Guyed lattice /masts/" You may like to note that if you follow the link to masts you will find reference to masts of triangular section.
However,
http://tx.mb21.co.uk/gallery/gallerypage.php?txid "9&pageid 3
Has some interesting photographs and notes regarding the triangular section /mast/ at Sutton Coldfield. Note especially the BBC Engineering department letter at the bottom of the webpage referring to /mast/
There are details of lots of other Tx stations here too, including a very iced-up Holme Moss and the collapsed mast and new concrete tower at Emley Moor.tower
Again, note the references to /mast/ here:
http://en.wikipedia.org/wiki/Sutton_Coldfield_transmitting_station
I think we are falling into the same terminology problem where, for example, you americans, rather illogically, call a machine for planing a piece of wood flat (a planer) a jointer and a device for machining a piece of wood to thickness (a thicknesser) a planer
See:
http://en.wikipedia.org/wiki/Radio_masts_and_towers
and read the section "Mast or tower", Americans are out of step with both UK Broadcast engineers and civil engineers.
--
Stuart Winsor




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On 08/14/2011 07:07 PM, Stuart wrote:

Yes there in lies the problem...here in the USA we call the "pipe" portion of an antenna system a "Mast" and anything of lattice construction whether guyed or free-standing a tower. If I had of seen your email was in the UK I probably wouldn't have responded at all.
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All the Best & 73's
Dale Miller, KC2CBD
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The Stratosphere Casino is a mast?
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The question is: Anybody having any luck with OTA TV?
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On 8/12/2011 8:39 AM, Robatoy wrote: ...

Very little...when they forced the changeover from analog to digital in fringe areas, the signal went from snowy to the typical on/off of digital and we went from the three networks plus PBS and one local to the two networks most of the time and the third hit 'n miss and no PBS or local. That's with an external amplifier on the signal prior to the input to the digital converter; w/o it there's nothing at all.
I've intended to add another 6-10 ft to the tower but haven't got a round tuit handy enough to have done so, yet.
All in all, as is typical, a setback for rural areas...but then again, we don't count; all we do is supply the basic food items, what possible use are we so why bother about them? (Seems attitude of DC and State governments, anyway, afaict. :( )
--
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This tool may provide some useful information: http://www.tvfool.com /
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On 8/12/2011 8:25 PM, Steve wrote:

Unfortunately, the tool can't move the transmitters any closer nor boost their signal strength... :(
I _know_ where they are (there are, after all, only three affiliate signals within 150 miles and the local and PBS are very low level output.
--
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wrote:

Go to RemoteCentral.com and check out the HDTV forum, you will find discussion there about OTA TV and reception along the US/Ontario, Canada border.
www.remotecentral.com/cgi-bin/mboard/rc-sat/list.cgi
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Excellent. That's the kinda stuff I hoping to find. Thanks.
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On 8/12/2011 9:39 AM, Robatoy wrote:

I have experienced random reception with some of the OTA TV stations in my viewing area. I have a disk type antenna mounted about 5 feet above the roof. Receive three stations all the time, out of 12 to 20 found after channel search: others drop out randomly while viewing.
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On 8/12/2011 8:39 AM, Robatoy wrote:

Limited, but favorable. I have an antenna and WinTV USB adapter for my laptop which I use to watch TV on the balcony the rare times I'm interested in a sporting event.
The picture here in Houston, from numerous stations, is astounding compared to cable ... not surprising since, IIRC, OTA is not compressed (or not as much), as over cable or sat.
And it is farking free! ....
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