You guys have lost me there! lol,btw that schematic i posted was from the facebook group SI47XX for radio experimenters,From what i understand the stock one will work in my old ts-700g,where is the best place to fit it in that radio,any ideas,is it in the output coax from the tx/rx relay to the nb board? or in the input to the 1st mixer?,also will the one with the 10nf caps work in my hf rx,to keep it simple,the shielding can is maybe 6mm deep at the most so no way to fit a torroid inductor,!,maybe an axial type,if A i can find one in the 100 too 250 nh range and B is it realy needed?,Tia.