[BC] dbu to microvolts program

[Mark Humphrey]

On 4/9/07, Richard Fry <rfry at adams.net> wrote:

> Really, the term "dBu" is incomplete if using proper SI unit designations.
> If it is a voltage field, then the unit of measure is in multiples of one
> volt, and needs to include the distance in space over which that voltage
> exists.

To confuse matters even further, there's also the audio term "dBu", an
abbreviation for "decibels unloaded" relative to 0.775 volts RMS
across a high impedance (bridging) load.  As most of you know, this is
equivalent to 1 mW ( 0 dBm) into 600 ohms.

While we're on the subject of decibels, I've often wondered why we
don't adopt the term "dB$" to measure profit, loss, pay increases,
etc.  After all, money tends to affect many people (especially CEOs)
in a logarithmic manner, in accordance with the Weber-Fechner law.
Maybe a good topic for AF someday?

Mark