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210PGSensibly equivalent¶ to:See also:
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The Cossor 210PG is a heptode or Pentagrid mixer and is also known as the 210SPG.The grid is wound with a variable pitch to give a variable-μ characteristic and so this would have been used in domestic broadcast superhet receivers.The 210PG dates from 1934 and would have been fitted with a screw top cap, sadly missing as so many valves from this era seem to be.The 210PG is a directly heated mixer designed for battery operation and with a filament current of 100mA could be used with dry batteries.![](../pics/aaq0415a.jpg)
The reverse of the envelope is plain metallisation.The classic envelope is 45 mm in diameter, and excluding the B7 base pins is 104 mm tall.References: Data-sheet, & 1043. Type 210PG was first introduced in 1934. See also 1934 adverts. |
Pin Connections
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | tc | ![](../static/key.gif) g2 | g1 | g3,g5 | f | f | m | a | g4 |
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Absolute Maximum Operating Conditions¶
| Vh | Ah | Va | Vs | Vg | ![](../static/pdflogo.gif)
| 2.0 | 0.1 | 150 | 80 | -9 |
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Updated June 06, 2023.
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