Shruthi caps (solved)

On the 4 pole mission BOM it lists c9, c15, c22 and c26 as 220pf styroflex caps - would it be ok to use 220pf polypropylene film caps instead? (only asking as it would save me having to order the styroflex ones if I don’t have to.

The reason for styros is mainly tighter tolerance and better temperature stability. Polypropylene have up to 20% and this is the filters core which has to be matched for correct function (especially the Pole Mixing, which is the 4PMs main feature i guess).

You may stuff in any Cap you like, but i wouldnt expect it to work as intended :wink:

Ok, you convinced me, one order to Farnell on its way as we speak :slight_smile: