WJ Miniature Crystal Filters 75,100,300,500,1K,4K BW, 21.4 MHz C.F. NOS A rare and hard to find item: Here are miniature crystal filters, used by Watkins-Johnson in radios like the 9040 series (8628, etc.) 1 3/4 long x 1/2 wide x 7/16 thick, 4 pins on bottom, I have at least 7 each of these, you pick value. byJuly 5, 2026
