Modern power amps (built after about 1975) do NOT need AGC -- in fact, they often create lots of distortion (splatter, clicks, sideband noise) when you use AGC. The RIGHT way to control power (drive) is to use the power control on the rig that you're using to drive it. Simply bring up the power on the transceiver until you reach the desired power from the amplifier.
While many power amps include an AGC line, their manuals often tell you not to use it. The manuals for my Ten Tec amps (Titan 425, Hercules I, Hercules II) specifically tell you NOT to use AGC. 73, Jim K9YC --Original Message Text--- From: Monty Shultes Date: Sun, 30 Nov 2008 10:02:50 -0500 To get the ALC signal from the 15 pin DIN plug I was hoping to use a VGA cable, cut one end off, and wire it up accordingly.
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