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Philco 6K7
bobbyd1200
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Posts: 2
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Joined: Nov 2024
City: Syracuse State, Province, Country: New York
#1

5 hours ago
I am restoring a Philco 37-60. The am reception is very good, but the shortwave is very weak. Run 6 Philco removes the ground off G3 and adds it to -2.5v.
My radio still has it to ground, question if I put G3 to -2.5 volts will that increase the sensitivity for shortwave.
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morzh
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#2

2 hours ago
The suppressor grid (if by G3 you mean the S) is usually at the Cathode potential, which in this caes is GND.
I am not sure how it would affect the sensitivity, if moved to negative potential.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
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  1. The PHILCO Phorum
  2. Philco Radio Discussions
  3. Philco Electronic Restoration