The only official representative

of OAO “NPP “Kontakt”

for power tubes

and SHF devices sales


Representative for products of

“Tesla ElectronTubes s.r.o.”


Official dealer

of SC “S.E.D.-SPb.”

(JSC “Svetlana”),

St.- Petersburg, Russia

Limited Liability Company

+7 (8452) 45-96-20
Mirnyi per. - 4, Saratov, 410056, Russia

Home \ Products \ Oscillator Tubes GM-1A, GM-1P

Oscillator Tubes GM-1A, GM-1P


It is a powerful modulator metal-to-glass triode designed to amplify low-frequency oscillations in the cathode schemes without currents in the control grid chain.

Operating position is vertical, glass bulb is up.

Forced cooling:

For GM-1A anode - water cooling, not less than 60l/min.; of leg - air cooling, 40 m3/hour;

For GM-1P anode – vapor cooling; of leg – air cooling, 40 m3/hour


GM-1A – 5kg

GM-1P – 14 kg

Предельные эксплуатационные данные

Напряжение накала 10,2-10,8 В
Напряжение анода 6 кВ
Напряжение сетки отрицательное 2000 В
Ток накала пусковой 285 А
Мощность, рассеиваемая анодом ГМ-1А 30 кВт
Мощность, рассеиваемая анодом ГМ-1П 35 кВт
Температура баллона, ножки и мест спая металла со стеклом 150 С
Интервал рабочих температур окружающей среды, С от +5 до +60

Warranty life is not less than 3000 hours.

To buy oscillator tubes  GM-1A, GM-1P or to get information about price, availability and years of production contact us by phone +7 (8452) 45-96-20, e-mail: