Please click your language flag. Bitte Sprachflagge klicken.


Information - Help 
ID = 40222
Tube type:  Numerals- and Symbols indicating tube   Indication 
Identical to HB105
Successor Tubes Z550M  

Base SPECIAL TUBEBASE in general
Was used by Industrial

Very early Pixie indicator by Haydu Brothers. The prefix itself, H-B, looks to be the acronym of Haydu Brothers. Designed as low cost indicator with single etched anode plate and pins terminating in short cathode rods on its back side, one small rod behind each digit cut out in the plate.
See also H-B106.


Collection of



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]

Data Compliance More Information