06-05-2015, 04:53 AM
Philco did not start selling their own brand of tubes until June 1930, which is also when they began to use their own brand in their radios.
The 511 Series would have had RCA or Cunningham tubes originally.
Arran, you can tell it's a 511 by the spacing of the knobs. Knobs spaced far apart like that indicate a 511. If the two left and right knobs were closer together, it would be a 65, 76 or 95.
The 511 Series would have had RCA or Cunningham tubes originally.
Arran, you can tell it's a 511 by the spacing of the knobs. Knobs spaced far apart like that indicate a 511. If the two left and right knobs were closer together, it would be a 65, 76 or 95.
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Ron Ramirez
Ferdinand IN
