[BC] Dolby B On FM Stations

[Mark Humphrey]

On 12/23/06, Tom Dimeo <mwam at box311.net> wrote:
> To me, the station sounded better when receiving
> it normally rather than when using the Dolby B decoder in the
> receiver.
>
> The dial was slipping when I stopped using it, anyone know
> where I might be able to purchase some dial cord?

A major drawback to the Dolby B system is that it's
threshold-dependent.  If levels into the decoder are set too low,
there will be too much high-frequency roll-off and the audio will
sound dull.  That's why the calibration tone was supposed to be
transmitted daily, but many people never bothered to set up their
decoders properly.

Many stations installed the Dolby encoder ahead of other processing,
and this also caused calibration errors.

For the dial cord, try Antique Electronic Supply:

http://www.tubesandmore.com/

It's listed as "Dial Drive Cable" (the politically correct term)

Mark