4B-4X Vacuum Tube Types
4B - 4CX250B
4CX250R - 4HT6
- 0-11 Tubes
- 12-12B Tubes
- 12C-12H Tubes
- 12J-12Z Tubes
- 13-16 Tubes
- 17-19 Tubes
- 1A-1F Tubes
- 1G-1Z Tubes
- 20-24 Tubes
- 25-29 Tubes
- 2A-2Z Tubes
- 3-34 Tubes
- 35-39 Tubes
- 3A-3V Tubes
- 40-48 Tubes
- 4B-4X Tubes
- 50-56 Tubes
- 57-59 Tubes
- 5A-5Z Tubes
- 60-62 Tubes
- 63-69 Tubes
- 6A Tubes
- 6B Tubes
- 6C Tubes
- 6D-6E Tubes
- 6F-6G Tubes
- 6H-6J Tubes
- 6K-6M Tubes
- 6N-6S Tubes
- 6SA-6ZY Tubes
- 7-72 Tubes
- 73-79 Tubes
- 7A-7Z Tubes
- 8-84 Tubes
- 85-8SN Tubes
- 9 Tubes
- A-CY Tubes
- D-DY Tubes
- E-EAM Tubes
- EB-ECC Tubes
- ECF-EK Tubes
- EL-EZ Tubes
- F-G Tubes
- H-O Tubes
- P Tubes
- Q-T Tubes
- U-VR Tubes
- VT1-VT198 Tubes
- VT2-VT99 Tubes
- VY-Y Tubes
- Z Tubes
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