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  1. New FU-251F Electron Tube Can Replace 4CX250B 7203 For Air Cooling Equipment

    No one is EVER ignored!

    eBay

  2. vintage tubes tube sockets 7203/4CX250B

    eBay

  3. EIMAC 4CX250B 7203 Radio Transmitting Power Tube

    eBay

  4. EIMAC 7203 4CX250B W/ E F JOHNSON Socket & Chimney

    New EIMAC Transmitting tube in original packaging with data sheets. Also comes with an E F JOHNSON tube socket and chimney.

    eBay

  5. GU70B GU-70B NOS NIB Soviet Transmitting Tetrode (4CX250B) Made in USSR in 1990

    One (1 pcs)GU70B GU-70B NOS Soviet Transmitting Tetrode (4CX250B). Made USSR in 1990.

    eBay

  6. 124-112 Tube Socket 4x150A, 4cx250B, 4cx250F Type

    Used. Pictures taken to best of ability showing as much as possible

    eBay

  7. 2 Pcs Custom Anode Connector for Eimac 4CX250B 4CX350A 8874/3CX400A7 and others

    These are used with 4CX250B, 4CX350A, and 8874 families of tubes. They will also fit glass types like 811A, 572B, etc. This is for your protection and peace of mind as well as ours.

    eBay

  8. Power Tube Testing Service for Low Power Eimac Electron Tubes 8877 8874 4CX250B

    This includes but not limited to the following types You are not purchasing a tube. This is a service for testing your tube. Upon Receipt we will visually inspect, clean, and test the tube for gas, shorts, and cathode emission.

    eBay

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