This content is restricted to site members. If you are an existing user, please log in. New users may register below. Existing Users Log InUsername or EmailPasswordType in the text displayed above Remember Me New User RegistrationChoose a Username*Company Name*First Name*Last Name*Address 1*Address 2City*State*Zip*Country*Phone*Email**Required field Comark Kokusai Electric Comark LLC’s S-Series Transmitters S-Series Transmitter HPA Service Bulletins 090623 Obsolete Transmitters and Products (RevA 6-23-09) 040706 Spellman Ion Power Supply Replacement (IOT) (RevA1 9-12-05) 030630 VSWR Diagnostics w/Directional Couplers (RevA 11-10-04) 030629 Cooling System Flush Procedure (RevB 8-9-04) 030626 Recommended NTSC Test Equipment Setup 030514 HVPS Resistor Board 030403 S Series IOT Troubleshooting Table 030331 Stack Pole Resistor Maintenance 030324 Comark Customer Service Support Guide 030224 Screw Terminal Connectors 941211 S-Series IOT Crowbar Test 940911 High Voltage Safety Guidelines Cooling Service Bulletins 090303 Pump Seal Replacement Instructions 060122 Cooling Pump Motor Lubrication Procedure 040705 Periodic Flow Meter Testing Alert 900720 Cooling System Flushing Notification Exciter Service Bulletins 050630 AGC Aural Adjustment Remote Control Pinout Listing S-Series Klystrode & IOT Optimum/Ultimate TransmitterElite TransmitterLinear TransmitterAffinity TransmitterIOX TransmitterAdvantage TransmitterS-Series Transmitter