![]() |
![]() | ![]() |
![]() | ![]() |
![]() |
2D1S (2Д1С) is a small soviet diode which main purpose is to detect ultra-high frequency oscillations in special-purpose equipment. Service life: around 400 operating hours (90% of the production). All of the available tubes are new, directly from the old reserves. Year of production: 1989 (please look at the gallery pictures).