05-15-2019, 02:21 PM
"...The volume regulator stopped being an antenna attenuator..."
From my grasp of the circuit , ( which isn't good), that seemed a little silly, trying to insert resistance between the antenna and the first stages. The majority of attenuation ( or perhaps I should say 'gain'), appears to be accomplished by the grounding of the cathode of that 3rd 24. But like you, I would have thought our interests in "authenticity" would lead to a substitute of a triode tube with those twin diode sections,. . . NOT (GASP!), a semi-conductor in a 90-year-old radio! [Image: https://philcoradio.com/phorum/images/sm...on_eek.gif]
From my grasp of the circuit , ( which isn't good), that seemed a little silly, trying to insert resistance between the antenna and the first stages. The majority of attenuation ( or perhaps I should say 'gain'), appears to be accomplished by the grounding of the cathode of that 3rd 24. But like you, I would have thought our interests in "authenticity" would lead to a substitute of a triode tube with those twin diode sections,. . . NOT (GASP!), a semi-conductor in a 90-year-old radio! [Image: https://philcoradio.com/phorum/images/sm...on_eek.gif]
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
