Copper Talk » Open Forum » Archived Messages » 2003 » 07/01/2003 to 07/31/2003 » Help on SSB power on a 2950 « Previous Next »

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galileo
Posted on Monday, July 07, 2003 - 6:58 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
Can someone give me some pointers on turning down the power on SSB on an RCI 2950...Thanks, Tom Shaw
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Kc0gxz
Posted on Monday, July 07, 2003 - 11:20 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
galileo

Most people remove Q-32, which is the modulation limiter. Doing this will increase modulation on AM, but will destroy audio quality on SSB. It also disables VR-12 (SSB ALC) and variable power for SSB.

Make sure that Q-32 is has not been removed. If it has been removed, you will not have control of your SSB power of the front of your radio. If that's the case, replace it with a C945 transistor. They are easy to find since they are used in many different circuits. If you have a junk radio laying around, I'm sure you will find a few in there.

VR12- Sideband High Power (ALC).

Jeff, kc0gxz.
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Hazardus
Posted on Thursday, February 12, 2004 - 9:49 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
I fried the Q32 on my amp, so can I just remove it and put a C945 transistor instead of it? Im a real noob at car audio . Also what is/does SBB do?
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Tech8541
Posted on Thursday, February 12, 2004 - 11:24 pm:   Edit Post Delete Post    Move Post (Moderator/Admin Only)
q32 is a 945.