"The Devil" wrote in message
news:9ubkj05djakea5j57krt6po72het1i9brg@rdmzrnewst xt.nz
On Sat, 04 Sep 2004 22:29:27 +0200, Sander deWaal
wrote:

Might as well use 220K or 470K if it's driving a valve grid.

High value pots are notorious for bad tracking.
To the best of my knowledge, ALPS and Noble don't offer over 100
kohms in their better potmeters.

Potmeter? If a voltmeter measures volts, then a potmeter must measure pots.

Sander, I thought you were off the stuff since the last time you were in
jail. What happened?

Do they not? Didn't know that.

A stepped attenuator might do the trick though.

Ah, now that would be ideal. I'd like to do something like that. Maybe
employ 256 steps with reed relays. There are plenty of cheap radio
remote control receivers and transmitters around. It would be a nice
solution to put all the front end attenuation and switching on a PCB
and then have a pair of outs for whatever preamp circuitry you wanted.

The usual way to do 256 steps with relays involves an up/down counter and
some binary decoders.