Type | Substitutes | Base Diagram |
---|---|---|
4HM5 | 4HA5, 4HK5, 4HQ5, 4HK5† | |
Notes: | † - Series circuit no controlled warm-up | |
Web References | 4HM5 (RCA (RC30)) @ Franks Electron Tubes 4HM5 (Westinghouse) @ Franks Electron Tubes 4HM5 @ RadioMuseum.org |
Basing | 7GM |
Heater Voltage | 4.2 | Volts |
Heater Current | 0.3 | A |