Some more little advances
I reinforce tubes inside as @Hugues advertice with little pieces of wood, I drilled a little bigger hole not to fail, then sand the wood until fits inside the tube (lot of work ), glue it a little and push with a smaller cf tube until the hole appears in it´s place
Then any antenna that I have in stock looks adecuate and I couldn´t find a 90degree adapter so I have to build my first antenna…if work or not is two cents appart.
First solder the two pieces
It´s little larger so, when I find who calibrate it, I can do it.
Then invent a balun (don´t do it at home) and protect solder with hot glue
Cover with heat shink tube and finished product