VHF triode but Noval base — different from CV1135's Octal+dual top cap
Electrical Specifications
Absolute Maximum
Anode Voltage (max)Max Anode Voltage300V
Anode Dissipation (max)Max Anode Dissipation3.5W
Typical Operating
Anode Voltage (typical)Anode Voltage300V
Grid 1 Bias VoltageGrid Voltage-10.5V
Notes
Grid and anode are both on top caps (not base pins) to minimise lead inductance for VHF/UHF use — not pin-compatible with standard octal triodes like 6J5 despite being electrically derived from it.
Heater current varies between sources: 0.2 A (radiomuseum.org, r-type.org abm0004) vs 0.3 A (r-type.org acl0172). The 0.2 A figure is more widely cited.
The 7193 and 2C22 are sometimes listed as equivalents; these share the same dual-top-cap VHF triode design but may have different ratings.
Anode resistance (ra) of 6667 Ω is derived from mu/gm (20 / 3.0 mA/V), not directly stated in available sources.