I built this antenna expecting better performance from my WiFi
setup. Stock antennas are 1/2 wave verticals at the back of the
router. New antenna is a 16 element coaxial collinear @32' agl.
Total transmission system losses work out to 5.299db @2.412
ghz (includes feedline + N connectors).

So, why does this antenna only have about (rough measurement)
1-3 db gain over the stock antenna? I was meticulous in my work,
measuring the antenna parts with a digital caliper and checking
the connections with a DVM along the way.

Maybe my design is a fault? I built the antenna just like this:

http://wireless.gumph.org/content/4/...s-antenna.html

Except in my version, I've got 16 elements made from RG58. I also
made 2 four element antennas for the back of my thinkpad and they
seem to be working about twice as far as the antennas they replaced
(inverted V's).

Any ideas?

73's de Ken KG0WX - Kadiddlehopper #11808,
Flying Pigs #-1055, Grid EM17io,
Elecraft K2 #4913, XG2, 4SQRP Tenna Dipper,
Heath GD-1B, MP-1(X)antenna