CONAR 221, 223 AND 224 TUBE TESTERS TUBE DATA BOOK. METER - SERVICE MANUAL. Type: (PDF). Size 767.6 KB. Page 26. Category METER SERVICE MANUAL. Front panel view of the Conar Model 220 Tube Tester. observe the test of the tube quality on the Perform any special tests as indicated on meter. CONAR MODEL 223 TUBE TESTER ASSEMBLY. METER - SERVICE MANUAL. Type: (PDF). Size 3.9 MB. Page 36. Category METER SERVICE MANUAL. CONAR. Appliance. Tester. COMPLETE INSTRUCTIONS INCLUDED. Tests Fans, Lamps, 220, 221 and 223 tube testers or the NRI Model 71 tube tester. Anyone with PDF copies of the manuals that are willing to share, I still use my "Conar the barbarian" 223 tube tester I found in a trash pile.These manuals are available for download and free of charge. Manual "Assembling and Using your CONAR Tube Tester Model 223". conar223.pdf. (3.9 MB). These manuals are available for download and free of charge. Tube Data Book for Conar 221, 223 and 224 Tube testers. 221_223_224_Data.pdf. (9.3 MB). CONAR. Tube Tester. Model 223. QUALITY EQUIPMENT BUILT ON A HALF CENTURY OF SERVICE IN ELECTRONICS If you paid anyone other than BAMA for this manual,.