Curious heater wiring
T1154M Ser. 86102
This is the second of two ‘sad’ T1154Ms that I was presented with back in early 2010.
Although it may not appear so, this one was the better of the two, externally. Although not shown in the photograph, both meters, complete with Perspex covers were present, as were the 4 valves. However the ‘Front Door’ was missing and it had been modified ... Note the blue wire dangling out of the PA compartment and the screened wire hanging loose underneath!
The fuse holder was damaged and there was a curious pull-
Apparently the previous owner, now a ‘Silent Key’ was known to have tinkered with the set and it seemed likely that he had ‘modded’ it in line with one of many ‘improvements’ that were published in the 1950s.
Although based on the AD67 and AD77 transmitters (Marconi’s designation for the T1154
was AD87D), and thus a genuine VFO-
The T1154 is renowned for drifting, and this is perhaps the reason for the curious
heater wiring with the additional pull-