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Audio and Video Talk
Valves / Vacuum Tubes
ecf80 in place of ecf82 in Radford sta25?
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<blockquote data-quote="charles" data-source="post: 832221" data-attributes="member: 2759"><p>Similar but not exatly the same.</p><p></p><p>In the RCA receiving tube manual (8-64) 6U8, 6GH8 and 6EA8 all have different characteristics.</p><p></p><p>All depends on the specific circuit design.</p><p></p><p>Nowadays some substitute the 7199 with a 6U8A valve by means of a valve adapter because of different pin-outs. </p><p>These two valves have different characteristics. Reason is because the 7199 valve is becoming very scarce.</p></blockquote><p></p>
[QUOTE="charles, post: 832221, member: 2759"] Similar but not exatly the same. In the RCA receiving tube manual (8-64) 6U8, 6GH8 and 6EA8 all have different characteristics. All depends on the specific circuit design. Nowadays some substitute the 7199 with a 6U8A valve by means of a valve adapter because of different pin-outs. These two valves have different characteristics. Reason is because the 7199 valve is becoming very scarce. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
ecf80 in place of ecf82 in Radford sta25?
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