Modular Noise Problems

[Grant Richter]

Romeo-

>
>The other problem I have and am not so sure what to do about is that my
>Electronotes Option 2 multimode VCFs are picking up a local FM radio
>station (94.9 FM).  At first I thought it was a cool accidental effect,
>but now that it turns up in everything I do I'm really fed up with it.  A
>friend of mine said it might have something to do with my patch cables
>acting as antennae (I'm using 1/8" mini cables) but I don't understand
>why the problem is only arising in these filters.  
>

Make sure you have a solid EARTH ground to the metal case of the
unit. This is the only help I know of for radio interference.
One way to look at it is that the EARTH (yea the big one)
is the common return line for all radio stations. The transmitting
antenna is one plate of a capacitor and the receiving antenna the
other (mucho simplified explaination). Having a earth grounded metal
case "drains off" the RF energy, hopefully, before it gets into your gear.

P.S. did you ever get the PCB done for the Buchla Low-Pass Gates?

Bon Chance,