Russian Power Tube
GS-35B Operational Data

The operational information shown below is gleaned from various e-mails, web sites, and hams around the world. If you have data to share, about this tube or any other, on any band, please send it to me for presentation!

Rumor has it that the input impedance of a GS-35B used in a cathode-driven, grounded-grid linear amplifier is about 35 ohms in parallel with 17pF. On HF, it is a fact that a properly tuned and loaded g-g GS-35B exhibits a reasonable approximation of a 50 ohm input impedance with simple capacitive input coupling. For a compendium of GS-35B and general PA data, check the W4ZT web page.

GS-35b TRIODE on 6m

Callsign

Va(KV) Ia(A) Ia(idle) Vg(bias) Ig(mA) Win Wout

K8CU

4.1 0.70 100mA   230 85 1500

OZ1DPR

3 0.4 100mA 30V 40 10 300

OZ1DPR

3 0.7 100mA 30V 80 50 800

OZ1DPR

3 0.95 100mA 30V 320 100 1550
GS-35b TRIODE on 2m

Callsign

Va(KV) Ia(A) Ia(idle) Vg(bias) Ig(mA) Win Wout

9H1PA

4.3 0.93 150mA   350 150 2750

DK5YA

3.7 0.82 100mA 30V 210 100 1900

DJ5RE

2.8 0.87 150mA     80 1500

DL4MEA (EME)

4.5 1.25 150mA 35V 300 200 4000

DL4MEA (Terrestrial)

4.5 1.0 150mA 35V 300 150 3000

GØRUZ

4.0 0.9     375 150 2500

KØPW

3850 0.58     235 65 1500

RW1AW

3.5 0.95 150mA   350 130 1925
GS-35b TRIODE on 70cm

Callsign

Va(KV) Ia(A) Ia(idle) Vg(bias) Ig(mA) Win Wout

CT1DMK

3.5 0.95 50mA 24V 200 100 1500

DL4MEA

4.5 1.0 50mA 35V 100 150 2500

EA1ABZ

3.15 0.7     300   1500

GØRUZ

4.0 1.0     375 150 2000

PA3CSG

3.6-4.2 0.8-1.0 150mA 28V 300-400 100 1900

RW1AW

3.5 0.95 150mA   400 150 1650

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This Page Last Updated: 29 October 2004
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