Kalibr L3-3 vacuum tube tester. Electron Tube meter.

Description

L3-3 tube tester is really the best tube tester for precise and versatile audio tubes testing for home audio, guitar amplifying, vintage radio. You can google "L3-3 card generator" for making your own cards for any tube you want to measure and test easily at home:
Tube Examples for testing:
- 300B, 2A3;
- 6L6, EL34, EL84, 6550, KT66, KT88;
- 12AX7, ECC88, ECC81;
- 5U4G, 5V4G, 6Z30, GZ32, GZ34,
5AR4
Please note that English, France, Spain L3-3 User Guides available in digital scanned format. You can get them after getting L3-3 device.
L3-3 tube tester can properly work for any Voltage and frequency worldwide standards.
110V-127V, 50-60Hz;
220-240V, 50-60Hz;
power supply mode can easily switch on the main fuse, plus manually stabilisation adjustment
makes power supply correct.
This L3-3 was prepared and tested with good results according to the manufacturer specification:
- main 250V stabilisation - stable with normal pulsation;
- Ua anode voltage stabilisation - stable with normal pulsation;
- Ug2 grid 2 voltage stabilisation - stable with normal pulsation;
- Ug1 grid1 voltage stabilisation - stable with normal pulsation;
- tube power filament AC/DC voltage  - stable under 1,5A load;
- S, Gm meter - stable and accurate readings;
- microammeter - stable and accurate readings;
- 500 V symmetrical for kenotrons - works good.
This lot contains only L3-3 device with non original power cord.