GS35b Data
Gs35b is a Russian Power triode available on various radio markets all over Europe for an acceptable price. Compared with an 3CX1500 / 8877 this tube is rather cheap and performing quite well. With 3kV on plate >1.5kW can be expected on 50MHz in a grounded grid amplifier. A good design for a 50MHz PA (By OZ1DPR) can be found on Home-Page http://hjem.get2net.dk/OZ1DPR
Maximum Overall Dimensions
Length : min 173 max 177mm
Anode Diameter : min 99.7 max 100.2 mm (Red copper)
Grid diameter : min 59.5 max 60.3 mm
Cathode Diameter : min 40 max 40.5 mm
Heater Diameter : min 25.6 max 26.2 mm
Weight : 2.8Kg
Electrical Characteristics
Heather is AC 11,9-13,3 V / Typical is 12,6 V / 2,95 (+/- 0,3)
A
Plate Dissipation 1500 W
Plate Voltage 3000 V
Plate Voltage max 6000 V (Pulse)
Plate Current 1.4Amp
Heating time > 1.5 minute
Grid Voltage min -400 V max +100 V
Required Air flow 1500 l/min
Grid Dissipation 26 W
FQ max 1000 MHz
Plate Temperature 200 degrees Celsius max !
Grid Temperature 120 degrees Celsius
Cathode Temperature 120 degrees Celsius
Grid current ??? mA (max ??? mA)
C (g-a) 4,5 (+0,5 -0,7) pF
C (c-g) 21,5 (+/- 3) pF
C (c-a) 0,12 pF