Lou, W7DZN wrote: "The setting resolution of the BFO and VCO is 10 Hz so when you step through filters you can get shifts in the CW note of up to 20 Hz between from filter to filter." and: "The K2 is very close at 10 MHz and below but up to 250 Hz off on 10 meters." ========== Aligned properly, both "problems" do not exist. 73, de Earl, K6SE