[amsat-bb] Re: 70cm Helicoil Good/Bad expensive?

[Joe Leikhim]

Helical antennas are wonderful things. However with one caveat, they 
respond in "normal mode" over a wider bandwidth than the desired axial 
mode. What this means is that your receiver is more susceptible to 
overload from _out of band_ signals than it might be using a Yagi having 
a resonant match. Be sure your preamp is a high end model with 
coincidentally, " a helical" front end filter.

-- 
Joe Leikhim

Leikhim and Associates
Communications Consultants
Oviedo, Florida

www.Leikhim.com

JLeikhim at Leikhim.com

407-982-0446