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Hi everyone,
I have an R-390a. When tuning "through" a CW signal, the CW signal warbles and is distorted. Once I've stopped tuning and set the audio response to "NARROW" and the bandwith to about 200hz,, the signal sounds like a pure DC note. A friend of mine who services lots of boatanchors including the R-390a says this is normal. He says I've got the RF Gain set too high and that's causing the signal to be distorted. I'm not so sure. Even with the RF gain set lower, I still hear the warbling and distortion as I tune "through" a CW signal. If I turn the RF gain *way* down, I don't hear it (but I don't hear the CW signal much either). AM reception is just fine and SSB reception using the BFO is just fine...no distortion or warbling as I tune through a SSB signal. So...my question for those of you that have R-390As or know them well, when I tune "through" a CW signal, should I hear a nice DC note all the way through or should it warble and show some distortion. I *am* using a matching transfomer with my 8 ohm speaker. 73 and thanks for any help you guys can give me! Derek WB0TUA |
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