VK3NX
Australian Amateur Radio Station
( 6cm Septum feed )
6cm Feed Assembly  with Scaled version of RA3AQ
Septum                                     and DB6NT Preamp.
The feed was scaled directly from RA3AQ's 1296 MHz optimised version for f/d of 0.39 -0.45.

(NO TUNING SCREWS WERE REQUIRED.)
Feed probes were SMA's  (diam. = 1.27mm)  extending  
10.0mm into the W/G.  They were located 9.5mm from the
"back short"

Achieved 24dB RL      and   34 dB Port-Port Isolation