Ron,
You are probably suffering from multipath distortion. I had the same thing and only learned of it when I acquired a Sequerra Model 1 tuner and its scope display clearly showed multipath distortion. I had thought it was the other tuner's fault. I use the same whip antenna you have and it will not correct this problem especially for my favourite station. To correct this, i will install a directional APS antenna and rotate it until the multipath signal is reduced or eliminated. This may be your problem. Bowwor someone's tuner that has a multipath measuring meter or display and see for yourself.
You are probably suffering from multipath distortion. I had the same thing and only learned of it when I acquired a Sequerra Model 1 tuner and its scope display clearly showed multipath distortion. I had thought it was the other tuner's fault. I use the same whip antenna you have and it will not correct this problem especially for my favourite station. To correct this, i will install a directional APS antenna and rotate it until the multipath signal is reduced or eliminated. This may be your problem. Bowwor someone's tuner that has a multipath measuring meter or display and see for yourself.