Add to Cart Quick view Collins L29 Brand New Peter Dahl Replacement Choke for the 75A-4, 75A-3, 75A-2 & 75A-1 P/N 668-0020-00 / PWDI13161 Collins MSRP: Now: $19.99 Was: Collins 75A-4 Brand New Peter Dahl Replacement Main Transformer P/N PWDP13053. This Filter choke can be prone to fail in the a fore mentioned Collins receivers. When this happens they no longer filter the Hum in the audio properly, and you can hear... MSRP: Now: $19.99 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $19.99 Was: Subtotal: Add to Cart