CANFI head V2 is off to the board maker .. thanks to several people for contributing feedback, thoughts, measurements and simulations, V2 features a top side foil to try and improve the match looking back in a 3GHz+
Feedback would suggest an ENR of around 14 to 15dB at 432, I'd be very keen to hear from anyone who has measured the ENR from their pair at 1296 and above ...