Amplifier Replacement Parts

811A Four Matched Vacuum Tubes, High-Mu Power Triode, 160W, 30 MHz, Set of 4

Part Number: PLB-811A-4

4.91 out of 5 stars ( 11 )

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3-500ZG Pair Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 2

Part Number: PLB-3-500ZG-2

5.0 out of 5 stars ( 1 )

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3CX3000A7 Ceramic Vacuum Tube, High-Mu Power Triode, Each

Part Number: PLB-3CX3000A7

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3-500ZG Vacuum Tube, High-Mu Power Triode, 500W, Ceramic Base, Each

Part Number: PLB-3-500ZG

5.0 out of 5 stars ( 4 )

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572B Three Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 3

Part Number: PLB-572B-3

4.8 out of 5 stars ( 10 )

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572B Pair Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 2

Part Number: PLB-572B-2

4.81 out of 5 stars ( 16 )

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572B Four Matched Vacuum Tubes, Power Triode, Direct replacement for the 811A, Set of 4

Part Number: PLB-572B-4

5.0 out of 5 stars ( 19 )

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811A Three Matched Vacuum Tubes, High-Mu Power Triode, 160W, 30 MHz, Set of 3

Part Number: PLB-811A-3

4.63 out of 5 stars ( 8 )

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811A Vacuum Tube, High-Mu Power Triode, 160W, 30 MHz, Each

Part Number: PLB-811A

5.0 out of 5 stars ( 1 )

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3CX800A7 Ceramic Pair Matched Vacuum Tubes, Compact Power Triode, 750W PEP Output to 350 MHz, Set of 2

Part Number: PLB-3CX800A7-2

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3CX1500A7 / 8877 Ceramic Vacuum Tube, High-Mu Power Triode, 1500W, 250 MHz, Each

Part Number: PLB-3CX1500A7

4.0 out of 5 stars ( 1 )

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572B Vacuum Tube, Power Triode, Direct replacement for the 811A, Each

Part Number: PLB-572B

5.0 out of 5 stars ( 2 )

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4CX800A Single Ceramic Vacuum Tube, Thompson Brand, GU74B Equivalent, RF Power Tetrode, 800W Max. Dissipation, Each

Part Number: PLB-4CX800A-T

5.0 out of 5 stars ( 2 )

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3CX800A7 Ceramic Vacuum Tube, Compact Power Triode, 750W PEP Output to 350 MHz, Each

Part Number: PLB-3CX800A7

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811A Pair Matched Vacuum Tubes, High-Mu Power Triode, 160W, 30 MHz, Set of 2

Part Number: PLB-811A-2

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 9, 2026 if ordered today

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Cooling Fan, Micro, 24VDC, 2700 RPM, 2 Watts, .08 Amps, 3.62 X 3.62 X 0.98 in., Each

Part Number: DMV-259-2026

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3-500ZG Four Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 4

Part Number: PLB-3-500-ZG-4

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3-500ZG Three Matched Vacuum Tubes, High-Mu Power Triode, 500W, Ceramic Base, Set of 3

Part Number: PLB-3-500ZG-3

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4CX1000A Ceramic Vacuum Tube, Radial-Beam Power Tretrode, 1000W, 110 MHz, Each

Part Number: PLB-4CX1000A

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OM-Power Amplifier Tetrode FU-728F for OM2000+, OM2000A, OM2500 and OM4000, Each

Part Number: PLB-FU-728F

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