Re: Introduction PCC189 in Mullard tuners?
Indeed Nuvistor is correct, the U.H.F. tuners employed just two AF186 transistors and gave a very good account of themselves, easy to align and having a far better noise figure than any valve tuner. I imagine the performance was not too far behind modern silicon tuners of to-day. The grounded base R.F. amp set the noise figure well above the mixer noise.
I refer to the Philips mechanical unit with a four section integral tuning capacitor in a silver plated frame and copper lined plastic top cover.
Victor
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