One clarification the the below statements. The "single point ground" often gets misused in these discussions. A single point ground is NOT a place or spot in the earth but it is a point of common co
A small hi-pot tester is invaluable for checking most suppressors. You can easily check the voltage that they are supposed to break down at. Polyphaser makes/used to make a unit called FIST for this
I think it was Jim Lux that had an arms length list of references posted about that a day so or ago on lightning prevention with dissipaters. I don't know what this has to do with WD4K? His post does
You didn't say what band the repeater would operate in? With 145 feet of cable I would assume that the antenna would be something less than that in height above ground? The higher gain antenna will g
Hi Randy, You do realize that an 8 bay antenna at VHF is going to be around 45 feet in length? That is going to consume almost 1/2 of your tower. The effective height of that antenna will be at its c
I had the same idea Jim. I have an old garage door opener with a long lead screw that has been lying in my garage for a few years. Even have the remote for it!! 73 Gary K4FMX ________________________
Not a good idea. You don't want the possibility of an arc inside the concrete by not having a solid connection between metal parts. 73 Gary K4FMX Just there has to be at least 20 ___________________
I had a hygain th3 stored in my garage for about 15 years and found that all the plastic had become brittle. The trap end caps would fall apart when touched. I ordered new end caps and when I went to
Just a thought: Does a shock absorber in the mast like this really take any stress off the rotor gears? The shock absorber will wind up allowing the antenna to twist further than it would without the
Hi Chuck, Yes I understand how the force is spread over time with the absorber. My question is more concerned with how it will affect the forces when oscillations are present. We know that energy ca
I don't know about the UV properties of the donuts but I do know that the UV will consume tires on a car. I have a car that sets in the same place in the driveway most of the time with the right sid
Let me see if I can remember some of this. The 3rd order intercept point is a fictitious number that can never really be reached. It is an extrapolated number from a set of measurements at lower sig
Try tinning the braid heavily so it fits tighter. 73 Gary K4FMX _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contes
On the nickel plated ones take a file and remove the plating where you are going to solder. The brass under it tines quite easily. 73 Gary K4FMX _______________________________________________ ______
For the cost of saving one yard of concrete I would think it would be a whole lot more expensive and work than starting over. 73 Gary K4FMX _______________________________________________ ___________
Look on their web site the price is there. Not cheap! 73 Gary K4FMX _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@co
When I put up my TA-33 they recommended grounding one side of the driven element to the boom with the supplied strap. I found that the antenna had two points of minimum swr. One was in the ham bands
Hi Bob, I am interested in your home made raising fixture for the LM-470. Any info you can give about it? Thanks Gary K4FMX _______________________________________________ ___________________________
There is a material called "star board" that is very tough and looks somewhat like Teflon. It is used a lot in the marine industry. It can be had at most plastic supply houses. You could probably get
Now there you go! Best idea yet. Why is it that so many people think that the radials have to terminate in an almost perfect ring around the base of the vertical? Just run all the lines to a common p