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Thread: Audio levels

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  1. #1
    Join Date
    Nov 2006
    Location
    Thorntown, IN
    Posts
    168

    Default Audio levels

    I've been successfully making digital contacts with most settings the same as in ssb operation. I've learned that psk is ussually always usb and rtty is usually lsb so I continue to keep learning new stuff. So this brings my next question regarding receiving levels. My soundcard has line level inputs w/o a preamp. All seems fine but the audio levels on dm780 is only about 6%. Most of my friends are running at least 20%. As I've been making contacts I assume this is fine but wonder if I'm missing anything with the lower audio drive. I can pretty easily tell where the sigs are in the waterfall at this level. The other thing I wonder is where I should set my dsp, nb, and agc. I have a lot of local noise due to power lines running around three sides of my property and living in town with neighbors that have wireless modems, plasma tv's, and such. I have agc set to fast like for cw, nb is on and af dsp on about 1/4. Maybe I should have all these turned off? It does bring up the audio drive level quite a bit but I assume it's also letting a lot more crap through to the sound card. Maybe that's the point--to let the sound card deal with all this stuff. Just looking for suggestions and to see if I'm doing things right. FWIW radio is an original ic-756, rigblaster pro interface, M-audio delta 2496 audiophile soundcard with line level inputs/outputs only. Thanks.

    Jeff

  2. #2
    Join Date
    Jul 2004
    Location
    Newport Beach, California
    Posts
    6,095

    Default

    Jeff, I use the mic connector through the Rigblaster Plus as the line out on my FT-890 is just too light. But I usually run DM780 at about 5 to 6% with no problem.

    I see absolutely no benefit to using 20% unless you need the waterfall to light the room.

    73,
    Bill
    Member: Backyard Engineering Group

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