On 12/23/14 11:12 AM, Ken wrote:
You are right, Jim, wider spacing is REQUIRED. From the ARRL Antenna Book:
“The line should be kept away from other conductors including downspouts, metal window
frames, flashing, etc. by a distance of two to three times the line spacing.”
The challenge is that there's not a lot of analytical backup in the
handbook (not that there should be) for that statement. "how much worse
is it at 2 than at 3"?
I think, though, that at 3 x spacing (based on the algebra in my
previous post), you're definitely down in the <1% kind of effect.
_______________________________________________
_______________________________________________
TowerTalk mailing list
[email protected]
http://lists.contesting.com/mailman/listinfo/towertalk
|