Hi,
I have quite a bit of info on this set, including pictures, circuits,
component layouts, model variants etc. Plus companion Tx, the T1154.
See
http://www.zipworld.com.au/~sb/radio/
Simon VK2UA
On Mon, 13 Oct 2003 23:46:50 +0100, Joe McElvenney
wrote:
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