FOR SALE: Crystal i.f. Filters Ideal for homebrew SSB and CW applications. 2.35 kHz bandwidth Center frequency is 1.4 MHz These filters were made for Redifon and racal in the U.K. Dimensions are: 3" X 1" X 1-1/8" tall. Will sell these individually or in pairs for USB / LSB Price is $30.00 each or a pair for $50.00 Shipping is additional.