[222mhz] 220 duplexer

[Chris Boone]

Came across (2) itmes what looks to be a 216-220MHz duplexer used on the
Inland Waterway Communications System (IWCS) and it looks a lot like a DB
Products; has their tan color on it, 5 cavities of what LOOKs like Band
Pass/Reject design PER leg inside a weatherproof fiber box (obviously to be
mounted close to the antenna)..but there is no model number, etc on it....I
have tried Googling and still no joy...anyone have any model numbers or info
on this??

BTW I have retuned one set to the highest 220 rptr pair (out 224.98/in
223.38)....WOW!! with only 3 cans tuned, I get little insertion loss and
100+db notch on my IFR1500 in the tracking gen mode...cant wait to get all
10 cans tuned and see how it works as a 220 duplexer!