| M17/73-RG212 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
| MIL-C-17 | 81349 | MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M |
| RG212 | 95303 | RCA CORP RECEIVING TUBE DIV |
| RG212U | 95303 | RCA CORP RECEIVING TUBE DIV |
| RG212W | 95303 | RCA CORP RECEIVING TUBE DIV |