Does anyone have the schematic for the optional noise blanker kit Heath offered for the SB-104? Thanks in advance, 73, Mark WB8JKR Support Amateur Radio, have a Ham for dinner Member ARRL, QCWA, OTC, Society of Cable Telecommunication Engineers WAS, WAC, WTO, DXCC MIXED, DXCC PHONE, GJDXCC, VUCC 2M, 1st place Ohio single op 1988 ARRL SweepStakes Novice 3/71, General 8/72, Advanced 8/78, Extra 8/89