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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K3 |   |   |  | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K300 | Klystron | 1954 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K3020 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K3020A | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K305 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K308 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K311 | Klystron | 1973 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K312 | Klystron | 1955 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K313 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K315 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K317 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K324 | Klystron |   |  | 
 | CV2304 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K328 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K335 | Klystron |   |   | 
 | CV2343 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K342 | Klystron | 1973 |   | 
 | CV6003 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K343 | Klystron | 1958 |   | 
 | CV10013 CV6003 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K346 | Klystron | 1958 |   | 
 | CV6003 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K350 | Klystron | 1973 |   | 
 | CV5426 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K351 | Klystron |   |   | 
 | CV2494 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K357 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K359 | Klystron |   |   | 
 | CV5985 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K361 | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K361B | Klystron |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K366 | Klystron | 1963 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K367 | Klystron | 1963 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K391A | Klystron | 1973 |   | 
 | CV6142 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K77A | Double Output Pentode | 1935 | B9 | 
 | QP22A | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K90B |   |   | IO | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| K9373B | Camera Tube |   |  | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KB9-150W | Reflex Klystron | 1959 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KCF30 | Triode Pentode | 1946 | IO | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KH1 | Triode | 1927 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KH1 | Hexode |   |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KLL32 | Double Pentode | 1946 | IO | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KR3 |   |   |   | 
 | CV158 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KR33-31 | Neon Lamp |   |  | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KR4 |   |   |   | 
 | CV180 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KR6/1 | Velocity Modulated Valve |   |   | 
 | CV116 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KR6/2 | Velocity Modulated Valve |   |   | 
 | CV237 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KR6/3 | Velocity Modulated Valve |   |   | 
 | CV238 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KRN2 | Velocity Modulated Valve (Klystron) | 1954 |   | 
 | CV87 CV323 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KRN3 | Klystron |   |   | 
 | CV130 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS | Diode |   |  | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS6-1000 | Reflex Klystron | 1960 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS7-1000 | Reflex Klystron | 1960 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS7-85 | Reflex Klystron | 1962 |   | 
 | 2K26 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS7-85A | Reflex Klystron | 1962 |   | 
 | 5976 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS9-30 | Reflex Klystron | 1960 |   | 
 | 6975 VA203B | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KS9-40 | Klystron | 1960 |   | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KTW73M | Pentode | 1937 |   | 
 | CV3527 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KU54 | Thyratron (Hydrogen) | 1953 |   | 
 | BT107 CV3875 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KY50 | Rectifier EHT |   |  | 
 | 2L2 U25 U47 | 
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| Type | Structure | Date | Base | PDF | Sensibly equivalent¶ to: |  
| KY80 | Rectifier EHT |   | B9A | 
 | 2J2 R20 U26 U49 | 
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