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      SIEMENS E 311
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      3 36260 30.1.2018
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      Описание изделия: Shortwave Communications Receiver

      Triple Conversion Superheterodyne
      17 Tubes Semiconductors
      Made in West Germany 1960 - 70's

      Specifications

      Coverage: 1.5 - 3.5 / 3.4 - 7.6 / 7.5 - 15. 1 / 15.0 - 22.6 / 22.5 - 30.1 MHz
      Modes: AM/ECSS/USB/LSB/CW
      Antenna Input: SO-239 60 Ohm unbalanced
      Sensitivity: CW (0.3 kHz filter): 0.16 µV 6 dB S/N,
      AM (6 kHz filter): 1.5 µV 10 dB S/N,
      SSB (3.5 kHz filter): 0.7 µV 10dB S/N
      Setting & Read out: 100 Hz
      Stability: /-20 Hz over 24 hours (after warm up of ovens)
      Selectivity: 6/3/1/0.3 kHz -6 dB, formfactor 6/60 dB 1:2.2 for AM and 1:1.3 for SSB
      IF: 1st IF: 1300-1400 kHz, 2nd IF: 370 kHz, 3rd IF: 30 kHz
      IF Rejection: >80 dB
      Image Rejection: >80 dB
      Audio Output: 1 W/5 Ohm, 600 Ohms line
      Voltages: 110/125/220/235 V AC /-10% 40-60 Hz, average 70 W
      Physical: Cabinet Version: 471x291x391 mm, 25kg
      Shock Mounting Frame: 498x328x420 mm
      Accessories: E 350 long wave adapter 10-1500 kHz, FSE 30 or TG 440 (Teletron)
      for FSK, H 305 for space diversity, Hellfax BS 110 or 114 for fax,
      NZ 3101 (Rohde&Schwarz) for ISB reception

      Features

      - 1/4'' Head Jack (2) - Speaker - Speaker Switch - Line Out 600 Ohm
      - BFO 1000 Hz - ANL - S/AF Meter - AGC/MGC
      - AGC 0.2/2 sec. - Squelch - IF Output Jack - Ref. Osc. Oven
      - Spectr. Osc. Oven - RF Gain - Calibrator 100 kHz - Dial Lamps
      - Dial Adjust - Dial Lock - Fine Tuning - Spinner Knobs
      - Preselector - Semi-Modular - Rack Handles

      Circuit Complement

      Tubes Semiconductors: 3x EF 93 (=6 BA 6), 5x ECH 81 (=6 AJ 8), 8x E 88 CC (=6922), 1x 85 A 2, germanium, selenium and silicon rectifiers, zener diodes for voltage regulation, 4x germanium transistors in power supply and 11x in 1 kHz spectrum oscillator, ovens for VFO and 100 kHz spectrum unit.
      Tuning: Four ganged capacitively tuned preselector circuits. Coarse tuning via 1st oscillator continuously or in steps of 100 kHz (phase locked to a spectrum oscillator in an oven). RF conversion to 1st IF (1300 to 1400 kHz), fine tuning between lock-in steps via 2nd oscillator (930 to 1030 kHz, in an oven) for further conversion to 2nd IF (370 kHz). The 2nd oscillator can be locked to an optional 1 kHz spectrum unit. 4 circuits for RF, 7 for 1st IF, 8 for 2nd IF and 8 for 3rd IF (SSB).
      Crystals: 1x 100 kHz for calibration and spectrum unit, 1x 340 kHz 1x 400 kHz in 3rd oscillator (USB/LSB) for 3rd conversion to 3rd IF (30 kHz), 1x 30 kHz 31 kHz in BFO (SSB/CW) for 4th conversion (product detector) to AF.
      Dials: Dial for coarse setting in 100 kHz steps. Fine tuning dial (between 0 and 100 kHz) of odometer type with 100 Hz readout . Both dials are driven by spinner knobs and gears.

      Comments

      This receiver was designed in 1959 for AM, CW, FSK and SSB reception. It was widely used by different government authorities and in military applications. It could be found on board of most German ships in the Sixties and Seventies. As a tube receiver the E 311 has an incredible setting accuracy of 100 Hz and an impressive stability of 20 Hz over 24 hours. The tuning scale has an effective length of 285 m (935 feet). Excellent for AM reception in an ECSS mode as well. The E 311 is probably one of the best tube receivers for FSK and SSB ever built.

      Versions

      E 311a to E 311e are very similar. Only small changes mostly in power supply, audio stages and 100 kHz spectrum unit were made. The E 311e1 and E 311e2 are the cabinet versions; the E 311e3 and E 311e4 have a shock mounting frame. E 311e2 and E 311e4 include the optional 1 kHz spectrum unit.





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      Дата рег.: Январь 2004



  1.   Обсуждение
    1. мыслитель

      Дата рег.: Май 2009
      Сообщений: 61
      Дата: 27.10.2009 Вы рекомендуете это изделие? Да | Сколько $ вы заплатитли?: Нет | Рейтинг: 10 

       
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      Отличный аппарат. Даже сейчас даст фору любому коротковолновому радиоприемнику КВ диапозона
      Посмотреть профиль пользователя Послать ЛС пользователю Найти все сообщения этого пользователя  
      4Z5JJ

      Дата рег.: Декабрь 2009
      Откуда: Израиль
      Сообщений: 325
      Дата: 10.10.2011 Вы рекомендуете это изделие? Да | Сколько $ вы заплатитли?: Нет | Рейтинг: 10 

       
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      Вот что пишет F3WT об этом приемнике:Hi gents,Recently I posted a question on the Siemens E311 series. Although notsatisfyingadmissi on /criteriae/ for this Group, I was told, I got 2 nice repliesthough.Meanwh ile I got a E311b1b. All I can say is it is very very quite ( veryless noisy ) compared with my TS590 even with its digital NR1 or 2 on .
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      exEW1DC

      Дата рег.: Апрель 2013
      Сообщений: 793
      Дата: 30.1.2018 Вы рекомендуете это изделие? Да | Сколько $ вы заплатитли?: Нет | Рейтинг: 0 

       
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      "The E 311 is probably one of the best tube receivers for FSK and SSB ever built"Е 311 вероятно один из самых лучших приемников для SSB, из выпускавшихся.
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