04-11-2016, 06:09 PM
(04-11-2016, 05:52 PM)boater sam Wrote: Thanks Mike, I have looked at everything else, the cores are unmoved, I cannot establish the frequency range with my equipment, I would not know how to with 2 coupled coils either. Short & medium waves are fine, sensitive and tracking well, Valve voltages/currents are roughly correct, all have been substituted. Components that were suspect have been changed, small value caps seem OK, resistors are all 20% and in tolerance.
Why would a broken pot increase the Q?
Lawrence, I thought of just replacing the coil/pot arrangement but have nothing suitable to hand. It would need to be a pair of coupled coils as per the original because of the switching. Which Denco?
Not absolutely sure, might be red, some Denco tech stuff here:
http://www.vintageradio.me.uk/info/MaxiQ...inDTB4.pdf
Lawrence.
