SWR Bridge 1 to 1000 Mhz

This SWR bridge is not my own invention, OZ3SW and OZ9MO has improved the design after DJ7VY construction in ukw-berichte 1/83
This is a construction set made for the members of Frederikssunds EDR Club, all I did was a bit of gluing and soldering
Thanks for all the hardware help, parts help, calibrating and measuring ! you know who I mean !!
It is possible to measure return loss up to 1000 Mhz, the return loss range is 0-50 to 0-40dB depending on frequency.

The schematic
The small toroids inside the 4 big ones, goes all the way inside,
They are glued with 10 sec. fast glue called cyano.