[time-nuts] Need a simple ID for some gear

[David]

> I don't know a whole bunch about microwave gear, so I need a 
> little help.  I came across a small box in a pile this 
> evening and I don't have a clue what it is.
> 
> It's a T construct, with SMAs at both ends of the horizontal. 
>  The vertical end looks like it's terminated to gnd.  
> Internal construction in a plate which connects all three 
> terminals.  Above and below the plate is a ceramic triangle 
> with a circular black insert.  Each plate of the outer case 
> has a circular magnet the same size as the black insert on 
> the ceramic plates, on the external side, and there is a U 
> shaped steel clamp which covers the entire assembly.  
> 
> This is probably a really easy question for some of you out 
> there....what is it?


Opening guess- a microwave isolator, the third port being a 50 ohm load
rather than a short to ground? 
http://en.wikipedia.org/wiki/Circulator
Problem is they tend to be relatively narrow band (say 5%) so I have an
expanding junk box that never quite has the one that would be useful !

Cheers