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Audio and Video Talk
Valves / Vacuum Tubes
Valve data books
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<blockquote data-quote="charles" data-source="post: 762775" data-attributes="member: 2759"><p>The most reliable information is from the manufacturer's valve data books.</p><p></p><p>The RCA ones:</p><p></p><p>Complete information including the graphs regarding say for a 2A3 valve is available</p><p>in the 1942 and 1959 edition. In the 1963 edition there is only one paragraph. </p><p></p><p>What happens, new valves appear in later editions and the obsolete ones disappear.</p><p></p><p>So one try to collect much as possible of these manuals.</p><p></p><p>The ARRL handbook is is a good reference source. The latest ones are in two volumes. Valves still appear in the</p><p>these handbooks but on a much smaller scale. Radio Amateurs still uses valve equipment. </p><p></p><p>A question: What is the correct emission (Ia) of a KT 66. Is the figure correct in the later AVO valve data manuals.</p><p>The answer is 85 mA.</p></blockquote><p></p>
[QUOTE="charles, post: 762775, member: 2759"] The most reliable information is from the manufacturer's valve data books. The RCA ones: Complete information including the graphs regarding say for a 2A3 valve is available in the 1942 and 1959 edition. In the 1963 edition there is only one paragraph. What happens, new valves appear in later editions and the obsolete ones disappear. So one try to collect much as possible of these manuals. The ARRL handbook is is a good reference source. The latest ones are in two volumes. Valves still appear in the these handbooks but on a much smaller scale. Radio Amateurs still uses valve equipment. A question: What is the correct emission (Ia) of a KT 66. Is the figure correct in the later AVO valve data manuals. The answer is 85 mA. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Valve data books
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