radio frequencies from a BYOC phase 90?

[nag hammadi]

hey guys.  anyone build a BYOC phase 90 and get RF issues?  i have built several of them for friends and they have all been great.  but one guy practices near a radio station, and gets REDICULOUS RF.  none of his othere pedals do it (including ones i have made for him).  i use hammond boxes.  i looked inside his and the battery cables were pretty long, as were a few of the hookup wires.  i am also grounding to both the input and output jacks. 

one friend said i should ommit the output jack ground...

none o fmy others have had the problem anywhere BUT in his practice space...  ?


as a side note, marshall amps do the same thing when used in the area.... ?

thought and comments?

[darkseid]

I never built it, but I have a few thoughts lol...........

You said a few of the wires are long, so you surely want to shorten them up.
Placing a cap or an RC in the circuit probably will work.

Filters can roll off the frequencies you don't want to amplify, so maybe adding a cap from signal IN to ground may work.
capacitor = 1/(2 * PI * resistor * frequency Hz) = roll-off frequency

Is the station AM? AM usually bleeds over any type electronics that is close by, there is several ways to fix that.

good luck.

[d95err]

Try the usual solutions. 47n to ground at the input and/or a ferrite bead in series with the input.

[A.S.P.]

make that 47p ?