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Entry  Thu Nov 8 18:44:01 2007, tobin, Configuration, PSL, ISS 
    Reply  Fri Nov 9 17:33:33 2007, rob, Configuration, PSL, ISS 
Message ID: 89     Entry time: Fri Nov 9 17:33:33 2007     In reply to: 85
Author: rob 
Type: Configuration 
Category: PSL 
Subject: ISS 

The 3.7 MHz is actually on the light. It's the beat between the 29.5 MHz sidebands and the 33.2 MHz sidebands. There are pads in the ISS PCB for a filter to notch this frequency--John is working on it.

I also found a 1.2 ND filter on the lens which focuses the beam on the ISS diodes. I replaced it with a 0.6 ND filter, which brought the ISS DC level (on the screen) up to ~4.2 (it saturates at 5). Once John finishes the filter we should be able to crank up the gain.
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