Craig, my apology to you, personally, that my "violation" comment was in reference to the photo on your website. I have to believe that image is a stock photo from the manufacturer of the product and
Hi Bob, I've used scraps of copper tubing (I was a mechanical contractor) to build all sorts of low resistance conductors and busses, mostly for 12-V stuff. One of the things I did, without really th
Copper tubing is a waste of money. Buy copper strap instead. You get much more surface area for your money. Copper tubing has one whole side (the inside) that is wasted. Copper strap makes use of bo
Question... When you drive an 8ft ground rod into the ground and are ON ground water ( you know this since the base of your tower you dug to 8ft began filling with water at the bottom and this site i
Gary's right although copper strap can be overpriced depending on where you find it. Copper tubing is such a common commodity it's hard to overprice it. One other advantage tubing has is it's easy to
I think the advantage of strap, pricewise, is that it can be a LOT thinner than the wall on tubing. At 1 MHz, skin depth in copper is around 2.5 mils. This implies that you could use sheet around 20-
Not without a center conductor. Otherwise you'd have a waveguide beyond cutoff. Mike W4EF............................................ _______________________________________________ _________________
JC Smith wrote: Gary's right although copper strap can be overpriced depending on where you find it. Copper tubing is such a common commodity it's hard to overprice it. One other advantage tubing has
Hi JC, I think I understand what you are saying but some may not. A copper tube doesn't have better conduction at higher frequencies than a solid conductor just because the frequency is increased. Bu
Hi Gary, I probably should have been more specific. I was saying the copper tube would be a better conductor at high frequencies because of its increased surface area (the stuff I use it typically 5/
Wouldn't it be better than a round wire? greater surface area to volume ratio and all that. _______________________________________________ _______________________________________________ TowerTalk m
Only if you're propagating the wave in a transverse mode. DC is below cutoff, but it's carried on the inside(as well as inside the metal, etc.). The question might be, if you have a seamless tube, an
If the shield of a coax cable carries a lightning strike about half of the energy gets transferred to the center conductor of the cable and propagates down the cable just like a radio signal would.