Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Thu, 6 Oct 2005 19:28:49 -0400
<snip> Would you then create a group of 1/4 wave radials tied together at the center, but floating above ground as the antenna is grounded to the tower? The antenna has its own matching and isolation
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Thu, 6 Oct 2005 19:33:55 -0400
I've lived in the country most of my life and only noted the singing close to the lines on windy days and even then it wasn't loud. Those are for dampening low frequency oscillations in the lines. I
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Fri, 7 Oct 2005 02:35:25 -0400
Thanks Tom, This AV640 is on a 32 foot Aluminum tower on the west end of the shop that is tied into a ground system. There is about 75 to 80 feet of LMR-400 that runs through conduit from just behind
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Fri, 7 Oct 2005 16:11:04 -0400
And here I had to tie the green grounding/bonding wire to every panel, sub panel, transfer switch enclosure, water pipe, and gas pipe. Roger Halstead (K8RI and ARRL 40 year Life Member) N833R - World
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Sun, 9 Oct 2005 03:41:52 -0400
Like Tom I no longer disconnect as the storm would be past by the time I'd get everything unhooked. Since finalizing the ground system I've had no problems and the tower takes an average of 3 direct
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Mon, 10 Oct 2005 15:28:34 -0400
I remember having to replace the coax inside a number of amps back then. One end of the braid would overheat to discoloration and melt the dielectric which of course shorted the coax. *IF* I remember
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Mon, 10 Oct 2005 23:29:34 -0400
It is a hydrocarbon based lube, penetranant, and rust inhibitor. I use LPS 1, 2, and 3. LPS 2 is often used for corrosion proofing aircraft older aircraft as it contains enough low viscosity, highly
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Wed, 12 Oct 2005 01:53:50 -0400
I have a gallon of it out in the shop, but I don't remember what's on the can other than dust. Just remember there are lubricants and then there are lubricants.<:-)) Jet engines use fuel (Keorsean)
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Wed, 12 Oct 2005 17:55:15 -0400
We did an old 50' American Steel (2 bolt). Instead of the truck we just used an extension ladder to push, as a lever when we could first get it under and in. Then we just continued to use it to push
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Thu, 13 Oct 2005 17:43:51 -0400
If you have the ones that are a single arm the hole in the end is for a clevis pin, not the thimble. The thimble fits through the clevis. Don't forget to safety wire the clevis pin which screws in pl
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Sat, 15 Oct 2005 14:43:14 -0400
I use a bit of Silicone grease (DC-4 or DC-5) although there are other makes out there. Just a thin film on the surfaces will do the job. However don't get it on the outside surfaces as nothing will
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Mon, 17 Oct 2005 16:16:05 -0400
I would use it for my next driveway/slab. I would NOT use it for a tower base. Not only is it a waste of money, it is not appropriate for a tower base since the specs for a tower base do not call for
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Mon, 17 Oct 2005 18:51:19 -0400
I sometimes *choose* to send a reply to the sender in addition to the list a if they are like me they do not read everything on the list, the concrete issue being one. I only read the ones that look
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Mon, 17 Oct 2005 23:54:51 -0400
I sure wouldn't worry about it affectin lightening damage. http://www.rogerhalstead.com/ham_files/tower.htm My tower went up late 2000 to early 2001 with the antennas and mast being installed late in
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Wed, 19 Oct 2005 16:18:20 -0400
If you can find any old rotors of the same type including the old CDE they *probably* use the same pot. At least it'd be worth a check. There are a lot of those around although who knows the state of
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Thu, 20 Oct 2005 16:32:10 -0400
Here's my project. http://www.rogerhalstead.com/ham_files/tower.htm I just shot some photos of the "elevated guys", but don't have them added yet. After 5 years since initial installation, (4 since a
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Mon, 24 Oct 2005 00:00:41 -0400
This is for a laterally supported load (no side, or tipping forces). My opinion: I'd be very uncomfortable with more than half that on a Ham M or Ham IV, BUT even 400# is a *lot* of weight. Not many
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Tue, 25 Oct 2005 18:20:51 -0400
Never depend on limit switches on a windy day. I released the brake on a HDR 300 and the wind spun it past the stops before I could even start the motor running. They need physical stops at 360, 400,
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Thu, 27 Oct 2005 21:11:56 -0400
One thing to add to the soft pins and shock absorbers. Avoid resonance. In industry we rate the shock absorbers according to the load and the frequency. Nealy all will dampen over a fairly wide range
Author: "K8RI on Tower talk" <k8ri-tower@charter.net>
Date: Tue, 1 Nov 2005 00:23:21 -0500
With mine it doesn't have to be covered. Just heavy rain or snow between me and the satellite and it's a dark screen. I need a larger dish. Roger Halstead (K8RI and ARRL 40 year Life Member) N833R -