Hi to the list, can anybody tell me if the filter below can be used in the S-Line? Regards, Ulrich / DK7BC (COL) 526-9692-010 Collins mechanical filter. F 455 FD 25, standard S-line FA case. Fc = 455 KHz, BW = 2.5 kc (± 1.25 kc). 100k ohm in / out impedance