Grazioli G-Max Vertical Collinear Antenna

[Copycat32]

Grazioli G-Max Vertical Collinear Antenna 27-28.5 MHZ 5KW Ground Plane..
I'm looking into. Possibly purchasing this antenna., has anyone used one or tell me if it's worh it I'm currently running the imax optimizer..
Thank You

 

[AudioShockwav]

There is a good thread going on this one here:

D

Thread 'Is the Grazioli G-Max really a 10/11m collinear? how does a coil delay the signal 180 degrees'

Dec 14, 2023

As per the title, all the photos are in the link
I did some googling some time back and found no info on how a coil between a 1/4 wave section and a 5/8 wave section will give the necessary 180 degrees of delay or if a coil can be used this way to make it work as a collinear
as we know a 1/4 wave antenna doesn't need a matching device nor does it if you lengthen it every multiple of a 1/2 a wave is 1/4 wave then 3/4 wave and so on
this antenna is 7/8 long overall.. is not the coil making it act like a 1-1/4 wave as far as matching is concerned by just adding inductance and nothing...

• davev8
• Replies: 43
• Forum: Amateur Radio Antennas

• 

73
Jeff