(!!!!) (Pair #5) 6F6G Marconi Spain NOS 1949 (31.6ma and 32.0ma)
$ 129.99
1 matched pair) 6F6G Marconi Spain NOS 1949
1 tube) 31.6ma Gm=2450 taller bottle - dark gray phosphor coating
1 tube) 32.0ma Gm=2620 - light gray phosphor coating
Test settings:
Vplate=285V
Vscreen=285V
Vgrid=-20V
Good Ma range = 32-38ma
Good Gm range = 2400-2600
Recommended for
- Sparton Nocturne 1186 from 1936
- Fire Stone Sir Chef S-7404-3 1939
- Montgomery-Ward Airline Model 62-226
- Supratek Cortese
- Victoria
- WE 106 preamp clone
- Wards Airline Radio
See more: vacuum tube
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