The QST Article from September 1989, "The Care and Feeding of an Amateur's
Favorite Antenna Support - the Tree" says Cadmium plated (but I think avoiding
Copper is the main thing). The author also mentions removing when done. It's a
pretty good article. He is not a fan of topping trees!
73,
Gary kk0sd
-----Original Message-----
From: TowerTalk <[email protected]> On Behalf Of Grant Saviers
Sent: Thursday, August 20, 2020 10:41 AM
To: [email protected]
Subject: Re: [TowerTalk] Tree's and Screws
I've put a lot of Zn plated and mostly hot dip galvanized lag bolts into trees
of all varieties over the years and seen no problems except the need to back
them out a bit as the tree grew around them. A good sign I think. When
installed, I leave at least 3/8 to 1/2" slack for growth.
The arborist or mill that might prune or harvest the tree someday would
appreciate their removal when no longer needed. Instant trashing of a saw
chain.
Absolutely no copper or Cu alloys (bronze, brass) or plating should be used.
Stainless I think is ok, but rarely has been my fastener.
Grant KZ1W
PS: hope you don't contest with your call ;)
On 8/20/2020 05:09, Larry Stowell wrote:
> I think it was on this reflector that somebody mentioned what material
>
> a screw good be with out harming the tree? I want to tie off a dipole.
>
> thanks
>
> 73 Larry K1ZW
>
>
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