Dale Parfitt wrote:



The preselector is sort of like an attenuator with a tunable notch that
will let the frequency it's tuned to pass through with little attenuation.



Just the opposite- a tunable passband as opposed to a notch (band reject)\


Had the right idea but the wrong word. Was distracted by one of my cats
who learned how to use the pull string on a talking toy while I was
writing it.