CTR Engineering, Inc

CTR Engineering website

  • Welcome To CTR Engineering, Inc
  • Custom Manufactured Products and Sales
    • Automotive Components
  • Antennas
    • Connectors
  • Ameritron (and other) Amplifier Repair Service
  • AL80B AL572 AL800 AL800H Correction Kit
  • Ameritron AL1200 AL1500 AL82 Upgrade Boards
    • Filter Capacitor Board AL82 1200 1500 installation
  • Ameritron 811 and 811H Upgrade Kits
  • AL811 and AL811H Fan Kit
  • EBM G2S085 G2E085 Blowers
  • Heathkit Drake Dentron Parts
    • SB220 SB200 SB-221 SB201 Relay 120Vdc
  • SB220 Heathkit, Drake L4, TenTec, Collins, Henry high voltage filter capacitor
  • 811A 572B 3-500Z Vacuum Tubes For Sale
  • RF Chokes, RF Switches, RF Capacitors, and other parts
    • Relays
    • Fixed Capacitors
    • RF Switches Medium and High Power
    • RF Chokes and Inductors
    • Power Supply Plugs and Connectors
  • TOF-1 Amplifier Tuning Aid
  • RF Transistors and Semiconductors
  • HV Tester
  • Kenwood TL922 X54-1300-10 Boards
  • Universal High Quality Power Supply Boards
    • Rectifier Bank
  • Universal Relay Line Buffer
  • Universal Step-Start System
  • Amplifiers and Equipment For Sale
  • Download Files Page
  • Contacting Us (please read)
CTR Engineering, Inc

Dailey 1948 Designing Thoriated Tungsten Filaments

October 30, 2021

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  • April 2019

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