THE GREAT MULLARD MAGIC BLOG

  Jose from Soller in Majorca contacted me today asking what valves his trusty Ekco needed and that he was searching for Mullard valves.  I told him that I would come and have a look and identify them for him but that I  would need a week's free board and lodgings - ha-ha, said he.    Realising I was on a 'no hoper 'with this approach, I sorted him out some valve data and then thought, well, it's about time we had another blog entry, so, here's my freshly prepared valve line up list for many Post War and well known AC, DC & universal mains...

Here we have a few more words on the MH-SVT from Mullard from 1951 along with a few of my own added in blue text:- This valve testing apparatus is capable of carrying out tests as similar as possible to those standard production tests to which all Mullard valves are subject. The tests are not of course as exhaustive as those carried out during manufacture but they do ensure that the valve under test is satisfactory in all respects insofar as it is within the approved tolerances of operation. Use of Punched Cards:  arrangement of the test circuit and selection of test...

In January of 1948, a group of engineers at Mullard Research Laboratories, Salfords were given the brief to design and bring to production within two years (24 months), 'a valve testing apparatus suitable for use by dealers and service engineers'.  The aim was to showcase this exciting new post war development at the British Industries Fair Radio Show in late 1950 at the Castle Bromwich, Birmingham halls.   The target was met and sure enough, on Mullard's stand at Site 64, the 'valve testing apparatus' was proudly presented to the waiting market. The design brief and the problems in meeting this requirement...

Ello peeps, well, I'm back from my travels and am in a good mood so, I thought I would share this radio related radio joke with you, anyhow, here goes............ An elderly couple are listening to a preacher on their Atwater Kent breadboard radio when the preacher tells the listeners "If you need healing today, I want you to place a hand on the part of your body you need healed, then place your other hand on the radio's output valve and you will be healed!"    The old man slowly places a hand on the power output valve then  inches his other hand  firmly...

The Radio Corporation of America (RCA) was formed in 1919 by General Electric, AT & T and United Fruit with the encouragement of the US Federal Government which wanted to maintain US leadership in long distance communications.  Post war American Marconi was bought by General Electric and transferred to RCA.  General Electric and Westinghouse made RCA their exclusive marketing channel for receivers and tubes in return for cross licenses to their patents.  In 1941 RCA had decided to bring its R&D on to a single 260 acre site it purchased near Princeton University. The chosen site was close to its...