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6K6GT and 5Y3GT probably

The tubes are likely a 6K6GT and 5Y3GT based on the other tubes in the set.

I couldn't locate the R489A chassis in my copy of Rider's, but you may have luck thru some of the online vendors. Among others, www.tubesandmore.com will research and sell copy of schematics.

Good luck,



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  • 6K6GT and 5Y3GT probably - Gary Kaufman 03/9/0406:42:56 03/9/04 (0)


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