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579audfilter [2007/03/28 15:30]
n5na created
579audfilter [2007/05/20 20:43] (current)
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 ====== Century 22 Audio Filter Mod ====== ====== Century 22 Audio Filter Mod ======
-**From the Ten Tec Reflector March 4, 1999**+**From the Ten-Tec Reflector March 4, 1999**
  
 Recently I acquired a nice Century 22. This rig uses an audio filter between the detector and audio amplifier for all of it's selectivity. When I advanced the "​filter"​ control for maximum selectivity,​ I noticed that the peaked or resonant frequency of the filter was very low, around 350hz. This did not correspond to the manual'​s specification of 750hz and made for uncomfortable listening. Recently I acquired a nice Century 22. This rig uses an audio filter between the detector and audio amplifier for all of it's selectivity. When I advanced the "​filter"​ control for maximum selectivity,​ I noticed that the peaked or resonant frequency of the filter was very low, around 350hz. This did not correspond to the manual'​s specification of 750hz and made for uncomfortable listening.

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