10-07-2015, 07:18 AM
But back in the 20's you didn't just take a resistor of the shelf and wire it in. If it were across the coil, rather than being part of the winding it would have needed to be upper K Ohm in value. So possibly a glass tube device and then a holder.
As a point of interest, the LW and MW feedback coils in the bandpass filter of the Philips D57 I'm working on, were 450 and 260 Ohms. Not resistance wire but the finest enamel gauge. Rewound for me by Mike B and working again.
Gary
As a point of interest, the LW and MW feedback coils in the bandpass filter of the Philips D57 I'm working on, were 450 and 260 Ohms. Not resistance wire but the finest enamel gauge. Rewound for me by Mike B and working again.
Gary
