A word on INRAD filters...

As you can see from the spectrum analyzer pictures below, INRAD filters have both a better formfactor (they are steeper) and a lower ultimate rejection level.

This seems to be true for the 2.2 / 2.4Kc and the 1.8Kc filters

Notice that the INRAD filters are a bit bigger. Nevertheless they fit neatly into the TS570.

Go to the INRAD Webpage

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