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1 RCA JAN CRC 813 Vacuum Tube 200 Watt PEP Power Pentode for Radio Transmitters | eBay
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2 x RCA 813 Transmitting Tube | eBay
1 RCA JAN CRC 813 Vacuum Tube 200 Watt PEP Power Pentode for Radio Transmitters | eBay
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2 Vintage RCA 813 NOS New In Box Vacuum Tube Pair Filaments Tested - BangyBang Tubes | Reverb
Shuguang Vacuum Tube 813 For Tube Amplifier Replace FU13 High Power – IWISTAO HIFI MINIMART
813 Linear Amplifier Project – W4NPN
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