sonicboy 0 #1 December 14, 2005 Hi all ! since you guys seem to know loads about every A on earth, i thought i'd post to ask for a bit of advice... there's this 110meters antenna (360feet) in the neighbourhood... thing is, the shape is more like the eiffel tower than a lollypop. what do you think about the width of it compared to it's height ? does the mention of '2sec handheld delay' make you hair stand up ? photo's posted so you get the idea.... thanks, and all the best to all !!! d. Share this post Link to post Share on other sites
DexterBase 0 #2 December 14, 2005 That massive stinger on top, and the other dish array on the adjacent structure is what makes my hair stand up. The Antenna itself looks pretty doable. Do you know what it's transmitting? Share this post Link to post Share on other sites
sonicboy 0 #3 December 14, 2005 yeah, it's a TV and Radio transmitter. i read the different posts about US antennas with interest, but dont know the technical terms, and how to translate them in our european norms. here are 2 wider views, just to appreciate why my interest Share this post Link to post Share on other sites
piisfish 136 #4 December 14, 2005 David, tu vas frire si tu sautes ce machin... Contacte des gars qui bossent dans le domaine... mais à mon avis c'est comme si tu te mettais dans un micro-ondes... Ueli G. a pas réussi a faire couper une antenne Swisscom au Säntis, même de nuit... Celle des photos avec LJA... Mais c'est un truc a te faire péter et cuire tout ce qu'il y a dans ton corps.. A plut Le Fishscissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
sonicboy 0 #5 December 14, 2005 'Contacte des gars qui bossent dans le domaine... ' ... t'as un mail pour ça ? i read that tv & radio emitters werent so dangerous... am i completely mistaken ? (photos posted because identifcation is most impossible, except for Fish who knows the area by heart ) Share this post Link to post Share on other sites
piisfish 136 #6 December 14, 2005 ask Swisscom what they think about it, or people like Ueli. Andreas should also have an idea, he has electrical knowledge and can be helpful...scissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
sonicboy 0 #7 December 14, 2005 yeah, ok. I'll post a mail to the operator, sort of 'hi, i'm david, do you think jumping your antenna can be dangerous?' yeah. will contact andreas, good idea. thanks fish. go back to work now Share this post Link to post Share on other sites
piisfish 136 #8 December 14, 2005 sending PMscissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
piisfish 136 #9 December 14, 2005 It's UHF for television and FM for radio. Don't know if that helps explaining the risks...scissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
TomAiello 25 #10 December 14, 2005 Quote(photos posted because identifcation is most impossible, except for Fish who knows the area by heart ) Photos like that are OK. My "no identifying photos" rule was aimed primarily at 2 particular photos that kept getting reposted, both of which included signs indicating name, or both name and location, of popular objects.-- Tom Aiello [email protected] SnakeRiverBASE.com Share this post Link to post Share on other sites
piisfish 136 #11 December 14, 2005 so Tom, what do you think of UHF and FM ??scissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
sonicboy 0 #12 December 14, 2005 hi tom, thanks for the precision - i wanted to clear that before getting told off so, if i understand correctly dexter's post, the question is much more 'what emissions does the antenna send' than 'what do you think of the shape of the thing' ? Share this post Link to post Share on other sites
TomAiello 25 #13 December 14, 2005 Quote...the question is much more 'what emissions does the antenna send' than 'what do you think of the shape of the thing' ? Yes. The shape of the tower looks very jumpable to me.-- Tom Aiello [email protected] SnakeRiverBASE.com Share this post Link to post Share on other sites
TomAiello 25 #14 December 14, 2005 Quoteso Tom, what do you think of UHF and FM ?? In general, I think they are fine. Much depends on the actual strength of broadcast and your proximity to the transmitter. I've looked over the safety regulations for several UHF and FM transmitters in the US. I've never found one that required workers to stay further than 200 feet away when the transmitter was at full power (and it was a very powerful tower). And that's for workers who need to spend a significant amount of time at that range performing some task or other. In all honesty, the number of towers I've found that I was actually concerned about radiation exposure on is very limited. Short answer: climb fast, turn around, and get off, then don't worry about it unless you're doing it 4 times a week.-- Tom Aiello [email protected] SnakeRiverBASE.com Share this post Link to post Share on other sites
base428 1 #15 December 14, 2005 I've got a local 320' antenna that is similar. It's an outside climb (bolts) AM tower, which makes getting on it quite interesting. So yes, your tower looks jumpable. AM Tower Pic(c)2010 Vertical Visions. No unauthorized duplication permitted. <==For the media only Share this post Link to post Share on other sites
sonicboy 0 #16 December 14, 2005 ok, cool, thanks for the answers ! if ever someone's a great engineer out there, here's the 'diagram of emissions' i found on the net..... do you understand what it's about ?! hang loose d. Share this post Link to post Share on other sites
piisfish 136 #17 December 14, 2005 you should edit the name of the attachment scissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
sonicboy 0 #18 December 14, 2005 thanks fish, nearly got caught on that one Share this post Link to post Share on other sites
wwarped 0 #19 December 14, 2005 Quoteok, cool, thanks for the answers ! if ever someone's a great engineer out there, here's the 'diagram of emissions' i found on the net..... do you understand what it's about ?! hang loose d. while this is not my area, it appears to depict the radiation strength as viewed from above the antenna. jump eastward to get the most radiation. jump northwest to get the least. 'course you ought to consider landing areas, prevailing winds, obstacles, etc. if a "great engineer" out there disagrees, please correct me! . DON'T PANIC The lies in learning how to throw yourself at the ground and miss. sloppy habits -> sloppy jumps -> injury or worse Share this post Link to post Share on other sites
BASE813 0 #20 December 14, 2005 apart from what the A is producing (which is certainly another issue -----> http://www.basejumper.org/forums/album_cat.php?cat_id=6 if you were initially worried about jumping such an object due to its shape, then maybe this post will help you: http://www.blincmagazine.com/forum/showthread.php?t=18156 Share this post Link to post Share on other sites
sonicboy 0 #21 December 14, 2005 okay!!! yeah, now you mention it, obvious! thanx!!! Share this post Link to post Share on other sites
sonicboy 0 #22 December 14, 2005 ok, now back to maths basics... should do me some good i'll have a go at it. thanks to all of you for the advice. great. hang loose, d. Share this post Link to post Share on other sites
JFK 0 #23 December 15, 2005 Quote there's this 110meters antenna (360feet) in the neighbourhood... Hey David, is this the total height? Would you be planning on climbing the top part? Jul.JFK #1013 PM Me No Adrenalin.... No Fun! "Minds are like parachutes the Share this post Link to post Share on other sites
piisfish 136 #24 December 15, 2005 from another webpage, structure is 120mscissors beat paper, paper beat rock, rock beat wingsuit - KarlM Share this post Link to post Share on other sites
sonicboy 0 #25 December 15, 2005 hi! as Fish says, reports say 120m. (400feet)... i doubt there's no ladder on the side, even of the top part, there usually always is. but anyway, there's no real plan yet, just thoughts! Share this post Link to post Share on other sites