For that short distance, it will not matter if you use 50 ohm of 75 ohm coax. 73, Don W3FPR On 1/15/2016 8:15 PM, Bert Rollen wrote: > I am setting up a LP-PAN with my K3. > > Will I cause much problem by using a 75 ohm jumper on the IF ? (I happen to > have several fairly nice 24" Belden 8263 BNC jumpers on hand). >