Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 67160
United States of America (USA)
Developer: Raytheon Mfg. Co.; Cambridge, MA 
Tube type:  Full-Wave Cold-cathode-rectifier   Power-supply 
  Ca. 1925 up to 1945 rare.
Identical to 4621_WLS
Similar Tubes
Normally replaceable-slightly different:

Base UX-Base (4 Pins (2 thick, USA 1924, UX)
Was used by Radio/TV-reception etc.

Page 671 of the Fall 1928 issue of the Sears Roebuck catalog lists the 4621 as equivalent to the BH cold cathode rectifier tube which was used in battery eliminators for radio receivers. It handles high peak currents of 80 to 90 ma (up to 125 ma with a maximum peak plate current of 400 volts) output - but needs proper elimination of RF noise by proper shielding and filtering. The BH was made by the Raytheon Manufacturing Co of Cambridge, Massachusetts. The tube is also listed on page 711 of the Spring 1929 catalog.

Information source Tube Lore (I)   page 16.
Sears, Roebuck Catalogs (Silvertone)   Page 671 Fall 1928 issue
4621_WLS: Picture from Rod Clay
David Erali

More ...
4621_WLS: Fin Stewart
Fin Stewart


from Just Qvigstad

You reach this tube or valve page from a search after clicking the "tubes" tab or by clicking a tube on a radio model page. You will find thousands of tubes or valves with interesting links. You even can look up radio models with a certain tube line up. [rmxtube-en]