Although both of these will serve to reduce the drive power and get you on the air, they are less than optimal.
The problem with reducing the B+ is the max PEP goes with it. You'll want to preserve that for positive modulation peaks. As Gary Schafer sez you want to keep the driver PEP up to where the amp needs it for full output, as long as the plate dissipation is not exceeded during dead carrier. Better to keep the plate hi and pull back the screen V. A simple attenuator wastes heat, may be difficult to adjust over a wide range, and offers no improvement in modulation performance over the stock exciter running at full power, (limited positive peak capability). But, a better idea than lowering the B+. g Geoff wrote: > >...Reducing the B+ level on the plate of the 6146 is another way. >...A "T" connector, and a dummy load works well, also. > > Just tossing out some more ideas.
