[Elecraft] Mics

Jim Brown Jim Brown" <[email protected]
Tue Jan 6 09:33:00 2004


On Tue, 6 Jan 2004 09:51:34 +0000, Julian, G4ILO wrote:

>there's no need for a pot. The gain could be controlled from a menu option, 
>as it is now, but with more settings and greater gain available at maximum.

Only if active, variable gain, electronics was added for the
microprocessor to control. There's more to it than just programming the
microprocessor. The current design switches a resistor in and out of
the circuit to change the gain by loading the mic. To get the
electronic equivalent of a pot, one would need to vary the bias of some
electronic element. There are several good ways to do that, but none of
them are free. :)

Jim K9YC