General Electric / E83F Philips Holland / Ericsson Sweden / Philips Holland / Heinz / 6J6 / EK90 Philips USA / A2521 Philips USA / Raytheon / 12AV7 GE USA / RCA USA / E182F Ericsson Sweden / GE E182CC USA / Toshiba / Vf / 12AV7 RCA USA / Philips USA / E182F Philips USA / EK90 RCA USA / EF93 / E182F RCA USA / 6Zh52P Philips Holland / EK90 GE USA / Siemens / Tektronix / 371B 371B 371B 382 393A Winlab Oy / /
Country
Germany / Netherlands / West Germany / Russia / United States / United Kingdom / /
Currency
EUR / / /
IndustryTerm
amplifier applications / telephone applications / frequency applications / highfrequency applications / Metal tube / low power applications / low noise audio applications / /