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RE: Sweet, I could go for a 442. mt

An issue of supply is Ham amplifiers use the 811A and 572B tubes as sourced from Shuguang and US supplier is RF Parts. However, RF Parts are out of stock on the 572B they named Taylor. RF Parts tests every tube and their Taylor brand work well. However, another factory called Psvane supplies 811A and 572B. Psvane bought out the Chinese Guiguang Tube Factory. Perhaps RF Parts will pick up Pvsane brand and test the tubes before sale. Psvane is a group that separated from Shuguang and bought another Chinese factory. Anyways, Hams are not out of luck yet. However, I would stock up on spares.


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  • RE: Sweet, I could go for a 442. mt - sony6060 08/7/2105:37:07 08/7/21 (0)

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