19-11-2015, 06:52 PM
(19-11-2015, 02:52 PM)Refugee Wrote: I doubt the aerial tuning would affect the mixer that much because the output impedance will only change very little as it is adjusted.
It is just a stand alone unit between the aerial socket and the mixer.
Let's recap ...
The set appears to have low gain.
When a signal is injected directly into the mixer's anode circuit via the meter lead, thus completely bypassing the aerial tuning arrangements, the gain increases.
This suggests there is an alignment problem but whether it is the aerial coil or the oscillator coil - both will cause the same problem if they are not tracking properly - we don't yet know.
