19-06-2017, 10:16 PM
An interesting point is that this Eagle FM tuner had a three-gang tuning capacitor. Typically, where a grounded grid RF amplifier was used, two-gang tuning was employed. Given the low input impedance presented by a grounded grid stage, it was easier to use a wideband, untuned input, and that might have been slightly better from the noise perspective, as well. Conceivably though, the third gang was used to provide a bandpass interstage, rather than to tune the input.
Cheers,
Steve
Cheers,
Steve







