|There are plenty of excellent
sites on the web giving very in-depth valve data, so I would rather
concentrate around those valves that are of special interest, either
historically or, based around the themes and items in this site.
||High power audio
output valve - the successor to the famous KT66 in 1956
Short Path AC Green Spot
||From 1927, this
early indirectly heated AC valve was revolutionary.
||A new audio valve
from 1961 by Mullard.
"U's for VHF"
100mA B9A range - issued in 1954/5 to cope with the burgeoning VHF/FM
demand as the UK goes high frequency. Used in the Bush VHF90 on this site
and many other 1950 VHF radios. Data on the UABC80, UCC85, UCH81, UF89 and UY85 set of valves.
series issued in 1951 from Osram. Data on the X79, W77, DH77, N78
and U78 set of valves.
'View Master' Series
||Set of valves
recommended for the home built television enthusiast in 1952; COvers
the D77, KT61 and DH63 valves.
||A rare 1924 valve
that was only used for a brief period.