Klausmobile Tube Tester Files
Saratov, 04/1970 - This 'RF Oscillator Tube, a ECC42 clone' according to Franz Hamberger, looks very much like 6N3P - tiny plates, smallest ever built in noval package. But the rest of the tube is different - see photograph for comparison. Unlike the ringing 6N3P, this one is shy and needs no special anti-oscillating efforts.
| Standard specifications per each triode | |||
| Parameter | Maximum | Operating Point | Measured |
| Ua, V | +300 | 90 | 112 |
| Ug, V | -100 | -1.5 | -2.0 |
| Ia, mA | 18 | 10.5 | 10 |
| Pa, W | 1.5 | 1.0 | 1.1 |
| Gm, mA/V | - | 6.8 | 6.3 |
| Rp, kOhm | - | (3.7) | 3.5 |
| Mu, V/V | - | 25 | 22 |
1. Curve at normal Uheater, full operating power. Note that -10V grid bias limitation cannot reveal the high Ua area of this low-mu tube.
2. Closeup to 10mA
3. Gm measurements
Legend: White curves: Ig<5uA Yellow: 5<Ig<20uA Red: 20<Ig<300uA. Measurements terminate at Ig>300uA
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