Need info: Varian 212MS microwave YIG filter
 

Here's one for you microwave guys...

I'm looking for any kind of info, specs, etc,
for a Varian model 212MS microwave YIG filter.
The data plate on the unit says it covers the
freq range of 1.8 to 12.4 GHz. It has Type N
connectors for input and output, and solder
pins for the DC control voltage. It came from
an old piece of HP test equipment. Anyone
have information on this filter? I was unable
to find anything on the internet using Google.

73,
Dean K5DH