michel wrote:
Hello all,

As a new Novice amateur I am considering to build my first antenna.
I know that starting with a j-pole is simple and easy. However. I see many
plans on the internet.

One of interest is the stacked 5/8 wave j-pole.
I only see this in a stacked version. In a not stacked way I only see the
half wave version with a quarter stub.

Can a 5/8 wave length and 1/2 wave stub work as a real 5/8 wave antenna?

Looking forward for any suggestion!

I don't know what construction technique you have in mind, but I
prefer to build them from 1/2" copper pipe. If that's what you intend
to do, then just cut the vertical radiator 5/8ths instead of 1/2
lambda. Build the rest the same (1/4 wave stub). Attach your coax to
the stub section using hose clamps, and tune by sliding the clamps up
or down until you achieve best SWR. Works great.

ac6xg