I had to clean up a site after someone used ¾ copper pipe for the halo. Standard sweat solder connections. Shrapnel everywhere. So what is the electrical properties of ¾ copper pipe after lightning has pierced through it??? J
Jeff From: [email protected] [mailto:[email protected]] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:41 AM To: [email protected] Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire 3 wide copper strap gives you 6 of surface area. ½ pipe gives you 1.57 surface area. So even 1 strap provides more surface area than ½ pipe. I think that you will find it less expensive than pipe and with the added benefit of not having to splice it every 10 feet. ¾ pipe gives you 2.355 surface area. The inside area of pipe does not count. RF will not flow on the inside of a tube/pipe. 73 Gary K4FMX _____ From: [email protected] [mailto:[email protected]] On Behalf Of David Jordan Sent: Tuesday, March 16, 2010 12:18 PM To: [email protected] Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Strap meaning solid copper, not copper or silver tinned braid. However, one might argue that the copper tubing has an equal amount of surface area and is more robust than the thin copper strap being sold.. if you fold 3 wide copper strap into a piece of tubing you get a ¾ OD tube. So, does the inside surface count? If not then the strap is the clear winner with double the surface area. What a hoot, Dave Wa3gin _____ From: [email protected] [mailto:[email protected]] On Behalf Of Gary Schafer Sent: Tuesday, March 16, 2010 11:59 AM To: [email protected] Subject: RE: [Repeater-Builder] Copper pipe rather than 2/0 copper wire Copper strap is better as you get the benefit of both sides of the copper. 73 Gary K4FMX
