Subject: TS850S sidetone mode I have a modification which brings the CW sidetone level adjustment out to the MON LEVEL control on the front panel of the TS-850. SSB MON LEVEL function is not affected by the mod. Installation requires proficiency in SMD soldering and de-soldering. If you need this mod, send SASE to: K0ZL BILL LEAHY 5293 ARBUTUS ST ARVADA CO 80002 PH: 303-424-4858