I have been working on the construction of a 31 meg low pass filter for receiver use. This type of filter could be useful for eliminating FM break through if it was a problem when receiving in the short wave bands, especially from 28 to 30 megs. The filter works perfectly, the response is virtually the same as two other commercially made units recently tested. The filter is designed for 50 ohms in and out. The images show the results.
