non-truebypass helping rf noise ???

[vdm]

hey guys,

i was just trying my siliface II into my 'umble, and the umble has a few noise problems - the first being quite bad RF interference pickup.

i was using a half-dead dpdt switch and just used it as an SPDT on the input of the siliface and the 'umble is always on, and it works really nicely - the siliface pushing the umble into sweet distortion/fuzz.

but i noticed when the siliface was engaged the RF noise practically dissapeared and im just asking what it could be in that circuit that is getting rid of that noise??

thanks

trent