Thread: R1155 info req
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Old October 14th 03, 12:46 AM
Joe McElvenney
 
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Hi,

Hi, can anyone tell me if the BFO freq on this set
runs at half the IF ie 280khz before I go mad
from Ron...


Yes, it does!

I guess they used the second harmonic to reduce the de-
sensitization that could happen if the BFO were at the IF
frequency and activated the AGC. It might also have helped to
reduce pulling of the oscillator by a strong IF signal.

A great receiver for its day although the build-state was
typical Marconi of the time. I think however, that the average
operation life of a Lancaster precluded the receiver ever
reaching old age.


Cheers - Joe