Antique radios, Old Time Radios
1645A
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Country:
United States of America (USA)
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| Identical to |
1645A
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| Similar
Tubes |
Other characteristic (electr. data):
1645
Differences not known by us:
5652
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| Filament |
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| Description |
Vacuum photocell with capacitance-balancing electrode and S-4 response. Similar to 1645, 'A' version selected for increased sensitivity of 30 uA/lumen. Sales limited to Times Fascimile Co., RCA communications and SigC.
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| Information source |
Tube Lore (II)
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Collection of
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