Neil -
No, it's because the tube serves a dual function. In CW/SSB V6 operates
as a product detector, oscillating at 50 kHz and mixing in the one
tube. The Cathode, Grid, Screen and Plate perform the oscillation (T1)
and Mixer function of the PD. In AM, the oscillator is disabled by S2,
and the Cathode, Suppressor and Plate operate as a triode audio
amplifier, the AF Preamp stage.
73, Garey - K4OAH
Glen Allen, VA
Drake 2-B, 2-C/2-NT, 4-A, 4-B, C-Line
and TR-4/C Service Supplement CDs
<www.k4oah.com>
Neil M Califano wrote:
Why is the product detector tube in the R-4A also listed as an amp? Is it just
because it is a tube and unlike a diode will amplify the signal?
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