Waveguide ? Amplifier ?

[Happy_Hamer]

The seller does not even know what it is?

ham radio waveguide AMP OR FILTER ? - eBay (item 160444458464 end time Jun-19-10 09:01:01 PDT)

Any ideas? I found it while search ham amp

 

[Quiksilver]

How many ebayer's do???

Possibly a diplexer...

 

[Captain Kilowatt]

I say it's either an amp for really high freqs like UHF or higher or maybe a combiner. It looks like it has OUTPUT on one end and the other end with two ports looks like TEST on the top port.