[Motorola] TU-255 cavity

[Jack Antonio]

I have a duplexer built out of 4 TU-255 cavities.

What are the specifications on insertion loss, and
is there any documentation on the cavity or duplexer
assembly. The cables between my units are obviously
not factory, and I'm wondering if they are the right
length.

I just tuned one up , and am seeing 3 db loss on
the transmit side, is this normal?

Thanks

Jack Antonio WA7DIA/4