15
neutralization less critical, and more closely matches the 811 amplifiers to 100-watt radios. This resistor
reduces ALC overshoot in troublesome radios, like the IC7300.
The 200-ohm padding or swamping resistor requires drilling a single hole. Mounting screw size is #4-40, which
is about .110-inch diameter. A standard 1/8
th
inch is good enough. Remove the tubes before drilling. Be sure
to not leave burrs. Supplied compound goes between the resistor and chassis. The AL811H does not need an
isolation capacitor, the AL811 does need the supplied isolation capacitor.
Figure 20 AL811H 200-ohm Pad
Figure 21 AL811 200-ohm swamping resistor and capacitor
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