GS-31B Tube 1.5kW New in Box! (hf, vhf, qro, pa, power, amp)
GS-31B 1,5kW Power Tube. With 3,5kV on plate >2.0 kW can be expected on 144MHz in a grounded grid amplifier! Intermodulation distortion of the 3rd order - minus 32 dB. Anode Dissipation - 1.5 kW.
Grid Dissipation - 22 W. Cathode- Oxide coated Heater voltage - 12,6V. Heater current - 3.4A.Maximum CW Anode voltage - 3.0 kV. Maximum Instantaneous value Anode voltage- 6.0 kV. Maximum CW Cathode current- 1.4 A. Cathode pulse current- 8.0 A. Transconductance at Ua= 2.0 kV Ia = 350 mA --> 22.5 mA/V. Capacitance Input /Output /Feed-through -19 pF /3.8 pF/0.12 pF-Max. Seal and Envelope Temperature - 250 C max. Anode Temperature - 200 C max. Cathode Connector Temperature - 120 C max.
They make a mistake and the grid current overload. It is better use the maximize anode voltage. Caution should also be exercised when operating the tube with filament voltages that may go below the nominal 12.6 volts. If your line voltage drops enough to cause your filament voltage to go below this level, you should adjust the filament voltage so that it will stay at or slightly above 12.6 volts under all conditions. Low filament voltage not only contributes to rapid tube failure, it will also cause your tube to have low output.Some users claim to run the filament voltage as high as 14 volts. Unlike directly heated cathode tubes, significant loss of the oxide coating on the indirectly heated cathode can occur with low filament voltages. High filament voltage can significantly shorten the life of the tube. You may shorten the life of the tube slightly by raising the filament voltage but not nearly as much as you will shorten it running low voltage.
Always provide for a method to test and adjust your filament voltage. It is Sale for 1pc (One) Brand New GS-31B 1,5kW Tube. The item "GS-31B Tube 1.5kW New in Box! (hf, vhf, qro, pa, power, amp)" is in sale since Wednesday, August 15, 2018.This item is in the category "Consumer Electronics\Radio Communication\Parts & Accessories\Tubes". The seller is "qro-stuff" and is located in Europe. This item can be shipped worldwide.
- Maximum Output Power: 3 kW
- Frequency range: HF-VHF-UHF
- Model: GS-31B
- Country/Region of Manufacture: Russian Federation
- Band: HF-VHF-UHF
- MPN: Does Not Apply
- Brand: Unbranded/Generic