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| Reviews Summary for Heintz-Kaufman 811A Gammatron |
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Reviews: 1
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Average rating: 5.0/5
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MSRP: $None.
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Description: Reference- Higher gain than new manufactures today!
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More info: http://
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write your own review of the Heintz-Kaufman 811A Gammatron.
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N8FVJ
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Rating: 5/5
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Jan 7, 2001 11:40
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Very High Gain!
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Time owned: 0 to 3 months
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As a reference I tested the H&K on a Hickok model #752 Gm type tube tester. I also referenced a new Cetron JAN 811A.
H&K
6.3 volts filament- 1450 mhos
5.0 volts filament- 1350 mhos
4.3 volts filament- 1150 mhos
3.0 volts filament- 750 mhos
CETRON
6.3 volts filament- 1100 mhos
5.0 volts filament- 900 mhos
4.3 volts filament- 700 mhos
3.0 volts filament- 450 mhos
Although the H&K tube has higher gain over the Cetron, this does not indicate the H&K will have longer life. This reference is not scientific by any means, just interesting. I am quite pleased with the performance of Cetron 811As and are very welcome in my amplifiers, especially so after Svetlana dropped production of the 811A.
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