I recently moved to a new QTH and want to put up a 70' tower for a 20m monoband yagi and a 15/10 duoband yagi. I have 10 acres, but the terrain is challenging. Almost all of it is on a fairly steep s
Thanks Jim and JP. That's very useful information. I don't have massive redwood trees. All of the trees on my property are live oaks and the largest is probably only 25' tall and not very massive, so
Anyone know of a professional tower installer in the San Francisco Bay Area? I'm planning on putting up a 70' tower with a 20m monobander and a 15/10 duobander. I have no prior experience with towers
My run will be approx. 400-450 feet, so I'll have to find a similar source of hardline. 73, Jerry _______________________________________________ _______________________________________________ Tower
I visited the county (Contra Costa, CA) building department this morning to inquire about a permit for my tower project. They require structural plans and drawings stamped by a licensed California PE
Thanks, Steve. I know what you mean about it seeming like they make up the rules as they go along. Neither of the two guys I spoke to in the country building department had ever heard of amateur radi
Kevin, Although my mailing address is Martinez, I'm not actually within the Martinez city limits. I'm in unincorporated Contra Costa county, and hence only county regulations apply to my situation. I
It may be a requirement, but I hear that it's widely ignored in the industry, as witnessed in this video: http://io9.com/#!5639113/the-scariest-video-you-have-ever-watched-in-the-name-of-science 73,
I almost went that route when I was living in a subdivision with a HOA and CC&Rs, but decided that I ultimately didn't want to wage war with the neighbors, even if I was "technically" in the right re
I plan to install a 50' tower and a tri-bander for 20/15/10 and was originally considering a U.S. Towers 55' crank-up model. While researching towers, I came across a company called Universal Towers
Darn! I was hoping that everyone would either love or hate aluminium towers so I could make a definitive decision one way or the other. My biggest constraint is space. I live on 10 acres, but almost
This is really great information. Thanks everyone! I think I have enough info to go ahead with an aluminum tower installation. Next step is to get the engineering calculations that the County require
Has anyone filed a building permit application with Contra Costa County, California? I've just gotten the wet-stamped engineering calculations for my 64' tower back and am ready to file for the build
The ARRL Antenna Book has a chapter on the use of the Smith chart. That's a good place to start. _______________________________________________ _______________________________________________ TowerT
Anyone have a drawing of the hole pattern needed for the Rohn TB3 thrust bearing they could send me (or point me to)? You'd think this would be on the Rohn web site, but darned if I can find it. 73,
Anyone know of a source for a 2" OD 5 to 20 foot steel mast in the vicinity of the S.F. Bay Area? Something with around 87 k psi yield strength would be ideal. Lots of on-line places sell these, but
That goes to show how much I don't know about masts. I'm planning to use a Rohn TB3 thrust bearing at the top of the tower -- what tubing OD would I specify to a metal dealer to get something that is
I'm putting together a TH-7DX and am having trouble with the hose clamps used to hold the telescoping sections of the elements together, especially the smaller diameter tubes. The instructions say to
Lots of interesting suggestions. Thanks everyone. Here are some more observations that touch on some of the points mentioned. Yes, the MFJ-sourced clamps look kind of junky. The screw heads are lumpy
I found some Ideal brand clamps at Home Depot. They are marked as all stainless and aren't attracted to my magnet. They may not be the best quality, but they're certainly better than the junk MFJ inc