Re: Lafayette Model HA-600A VERY DEAF
The description [red text] is wrong.
FET1 and TR1 are a 'hybrid' cascode pair.
FET2 is the mixer.
FET3 is the local-oscillator.
The switched resistors in the source connection of FET1 are presumably to alter the bias/standing-current of the cascode pair depending on waveband.
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