I have a 60' mast made of three 2" x 20' thick wall steel scaffold poles welded together with angle iron reinforcements at the joins. Very strong. I have it erected against a 50' pine tree, and want
I thought also that when making these applications, you were never supposed to use the word 'tower' - its too emotive. Try instead 'mast', 'pole', 'antenna-support'. Has anyone else got any interesti
I think that the kindest way (to the tree) to fasten an antenna support is not to wrap rope or wire around it, but instead to use a 4" or 6" coachbolt screwed into the trunk, at 90 degrees to the dir
is coachbolt I'm not sure why it is hard to implement. All you do is climb the tree, taking with you the bolt, and a couple of spares in case you drop one. Also a hammer to bang it into the tree 1/2"
I see VK4VKD has a new page these days http://homepages.ihug.com.au/~aeitower/ and there's a link to an engineering report http://homepages.ihug.com.au/~aeitower/15mOMTEP.htm Does anyone have any com
Its quite normal for the average Joe, used to seeing 8-wheelers on the tarmac, not to have any idea just how heavy these trucks are ! Watch the wheels of one parked up on a verge one day, and you can
Look at these pages first... http://www.qsl.net/iz7ath/web/02_brew/11_balun/pag01_eng.htm For the 4:1 balun page... http://www.qsl.net/iz7ath/web/02_brew/11_balun/english/pag08_eng.htm http://www.qsl
suitable size. Get your local welding shop to weld the ring on to the bolt-top. The advantage here is that the bolt can still be screwed into the tree with a spanner. Treat with cold-galvanising pai
http://www.titanex.de/ This company sells a number of log periodics that cover 40-10, and one that covers 80-10. Array Solutions http://www.arraysolutions.com/pricelist.htm is the US dealer. 73s Tim
I wonder if some radio club has ever borrowed HAARP for a weekend, and put it on the Ham bands ? I've occasionally heard of Hams doing this with other big antennas, such as broadcast rhombics and cur
There have been a number of posts recently on Towertalk about homebrew / homemade masts and towers, and none have received much of a response, probably for the usual reason that everyone is too nervo
Do you guys across the pond get the BBC World tv channel on satellite ? If so, check out this program - the opposite in technology: Sunday:21:30GMT Rough Science - Time and Transmitters Kate Humble a
As a total novice at this, I'd be interested to know why it is SO dangerous. What are the things that can go wrong ? 73s Tim EI8IC _______________________________________________ See: http://www.msco
This is the old VK4VKD operation - has been around for a number of years in Oz. Nice new factory photos - looks like the guy is going bigtime. Quite a few magazine articles in various international m
Hi Jeff - why not just place it on a website ? That way, you only have to 'send' it once, and its available for everyone. 73s Tim EI8IC Weather Stations", and lot's more. Call Toll Free, 1-800-333-90
I wonder what the difference is, at those heights, between a GP as you describe, and a vertical dipole ? Seems to me that if you take half a standard dipole for the top bit, and half a fan dipole for
That's a great example - thanks for sharing, Jim. 73s Tim EI8IC _______________________________________________ See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather Stations
Brett - its just the name that is the same. The UK Strumech towers are very different mechanically - they are nested crank-ups. The VK design is unique, as far as I know. 73s Tim EI8IC www.qsl.net/ei
Check out the '3rd place.jpg' - some ideas for a home brew cherry picker ? http://www.hobartwelders.com/mboard/showthread.php?s=&threadid=3422&highlight=second+place (the above URL should be in one p
Whilst looking at this page http://www.qsl.net/aa0mz/nbred.htm I came across this excellent photo of a windmill tower here: http://www.qsl.net/aa0mz/notresp.jpg This got me wondering why windmill tow