This is how it should be done, with Swiss precision.
<http://tx.mb21.co.uk/gallery/gallerypage.php?txid=840>
These are photos of conversion of a British TV tower for digital TV. In
Parts 1 through 4, the Swiss helicopter has lifted off the old analog
antennas and positioned the first bay of antenna panels for DTV. Part 5
begins where four men have climbed that first stick and positioned
themselves around the top. Then the helicopter lowers another whole bay
of antenna panels neatly down between the four of them. No swing, no
drama, no trapped thumbs... just a pleasure to see.
73 from Ian GM3SEK
>-----Original Message-----
>From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of
>K7LXC@aol.com
>Sent: 25 October 2013 16:43
>To: towertalk@contesting.com; nv8a@charter.net
>Subject: Re: [TowerTalk] Fwd: Raising 25G with a helicopter
>
>> I only watched a little and couldn't see how it was attached. How
were
>they going to detach the cable?
>
> They have an electrically operated hook - push the button and the
hook
>opens up.
>
> Yes, there were a bunch of obvious safety violations.
>
> I've used helicopters several times and it's a nifty albeit
expensive
>way to go. The instances were where you couldn't use a crane for big
yagis.
>
> The interesting part is that while the chopper is hovering, it's
in
>equilibrium so all you have to do to move the load is push or pull it
-
>pretty interesting. Doesn't take much to do that.
>
> The biggest thing to look out for is that all of the moving air
>creates a BIG static build-up on the antenna so you need to discharge
it
>before
>you grab the antenna.
>
> And the one I rented about 15 years ago was $450 an hour.
>
>Cheers,
>Steve K7LXC
>TOWER TECH -
>Professional tower services for amateurs
>
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