[Premium-Rx] Mini-circuit amps

[Ka9p at aol.com]

I'm getting ready to fiddle with a MIni-Circuits ZFL-500LN amp ahead of a 12 
way splitter to use as a poor man's multicoupler.  Because it was all cheap :)

The amp has nominally 20 - 25 db gain or so, which I'd like to reduce to make 
the system a unity gain set up.  Can anyone hazard a guess what the best 
approach to doing this might be?  I've considered an attenuator on the output of 
the amp, but was also curious whether the gain might be usefully varied by 
reducing the supply voltage, and what effect that might have on noise figure 
(which is OK at less than 3db) or 3rd order IMD (which ain't very good already at 
about +14 db).

Thanks for any ideas.

Scott
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