[geoff]

On 7/11/2016 5:00 p.m., Phil Allison wrote:

** Nothing stops you using a regular log pot operating in the reverse sense, with gain increasing in the CCW direction.

A very satisfactory solution is to use a 12 position rotary switch and a chain of 11 resistors wired across adjacent contacts.

For 4 dB steps, the values a

15, 27, 39, 68, 100, 180, 270, 470, 1k, 1.5k & 3.9k



..... Phil


Makes for more accurately repeatable settings too, if that's a benefit
to one's particular way of working.


geoff