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  1. M

    Dx979 + 667v issues on SSB

    I doubled up on my supply cable last night with a run of #4. With the added #4 conductors and the existing #6, the voltage drop has been reduced to less than a quarter volt. I am still hitting the brick wall on the key up, however. I did gain a few watts when at full modulation.
  2. M

    Dx979 + 667v issues on SSB

    Just a small update. The voltage drop is the #6 cable. I see only 0.1vdc drop at the power supply terminals when keying and modulating SSB. I also notice that the problem is apparent only when the amp's SSB delay and/or the pre-amp is on. With the SSB delay is off the radio modulates properly...
  3. M

    Dx979 + 667v issues on SSB

    Hello guys, I'm new to the forum but not so new to the hobby. I'm not a expert of course, although I know there are some here, hence my question. As the title states, I have a dx979 connected to a 667v. On AM I'm modulating to roughly 450W from a 100W dead key. Input to the am from the radio is...