My question addresses RTTY (FSK D) and the Dual PB capability. I understand the theory of what is being done, but I have yet to see the advantage of Dual PB on an RTTY signal as opposed to normal passband. I am curious if any of the RTTY ops have seen a definite advantage of using Dual PB over normal passband tuning. 73, Steve, K4FJ K3 #290