DB-420 16 bay UHF folded dipole.

[NQ6U]

The joining connections are likely at 75 ohms as part of the phasing design. Much simpler, but I ran a pair of home brew phased loops on 2 meters for a long time till it blew down. Used RG-6 for the phasing harness. The 75 ohm matching sections are common.

This, exactly.