| 01/201/301 TYPES |
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| RATHEON 01A ST SHAPE |
| UK X-201 BALLOON |
| RADIOTRON UX 201-A BALLOON |
| CUNNINGHAM CX 301-A BALLOON |
| Plate Voltage = 90
VGrid No. 1 Voltage -4.5V Amplification Factor (mu) = 8 Plate Resistance (approx) 11Kohms Transconductance = 725mµ Plate Current = 2.5 mA |