If you catch a grizzled old radio amateur propping up the bar in the small hours, you will probably receive the gravelly-voiced Wisdom of the Ancients on impedance matching, antenna tuners, and LC ...
Designed for general-purpose applications, the Model 412 audio attenuator and amplifier provides 80 dB of attenuation in four-decade steps, plus fine attenuation in each step with a single-turn ...
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