McVitie Weston valve collection, RCA Cunningham Radiotron valve, type 26
- maker:
- RCA Corporation
RCA Cunningham Radiotron valve, type 26, (RMW/D139 - McVitie Weston number), by RCA Corporation.
RCA Cunningham Radiotron valve, type 26, (RMW/D139 - McVitie Weston number), by RCA Corporation.