en:e-640
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— | en:e-640 [2019/04/07 18:27] (aktuell) – angelegt - Externe Bearbeitung 127.0.0.1 | ||
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+ | ====== E-640: Telefunken E 127 Kw/4 ====== | ||
+ | **E-640**, **Telefunken E 127 Kw/4**; developed and produced by [[Telefunken D|Telefunken, | ||
+ | In the Swiss Army, the Shortwave receiver Telefunken E 127 Kw/4 " | ||
+ | |||
+ | {{: | ||
+ | ===== Technical Data ===== | ||
+ | * [[Principle]]: | ||
+ | * [[Modes]]: [[A1|CW (A1)]], [[A3J|SSB]] with BFO, [[A3|AM (A3)]] | ||
+ | * [[Frequency range]]: 1.5 - 30.1 MHz | ||
+ | * **Analog dial** | ||
+ | * [[Sensitivity]]: | ||
+ | |||
+ | ==== Power Supply ==== | ||
+ | * [[Mains]]: 110 - 240 V AC | ||
+ | |||
+ | ==== Dimensions ==== | ||
+ | * 550 x 375 x 390 mm, 44 kg | ||
+ | |||
+ | ==== Accessories ==== | ||
+ | * SSB/ISB adaptor **BP102** | ||
+ | * radio teletype converter TgFs127 | ||
+ | * diversity reception adaptor Abl 305 | ||
+ | |||
+ | {{: | ||
+ | ===== Operation ===== | ||
+ | With a size of 550 x 375 x 390 mm and a weight of 44 kg, the device is significantly more compact than the Telefunken [[E-639|E-104]] or the Rohde & Schwarz [[http:// | ||
+ | |||
+ | In the middle of the frontpanel, you find the multi - colour semicircular frequency dial: The band segments are colour coded: the 1,5 - 3,3 MHz range 1 in white, range 2 from 3,2 - 7,1 MHz in yellow, range 3 from 6,9 - 14,1 in grey, range 4 from 13,9 - 22,1 MHz in green and the last range from 21,9 - 30,1 MHz in red. | ||
+ | |||
+ | At the left of the " | ||
+ | |||
+ | The other controls are located in one row below the frequency dial: from the left the bandwidth selector, the main tuning knob (with fast tuning mode activated when pulled out), the band selector with the identical coloured marks, the RF gain control and the AF gain / volume control. | ||
+ | |||
+ | A the bottom of the receiver' | ||
+ | |||
+ | {{: | ||
+ | |||
+ | As options, the receiver E 127 can be connected to the radioteletype adaptor TgFs 127 (reception modes F1, F3), the single sideband demodulator BP 102 for SSB reception with full (A3a) or reduced carrier (A3b) and the diversity adaptor Abl 305. | ||
+ | |||
+ | ===== Technical Principle ===== | ||
+ | {{: | ||
+ | The description of the signal path in the original manual is as follows: "The antenna signal is fed via two HF stages ([[de: | ||
+ | |||
+ | The IF signal then passes through two crystal filter stages ([[de: | ||
+ | |||
+ | The output stage ([[de: | ||
+ | |||
+ | ==== Valve setup ==== | ||
+ | {{ : | ||
+ | |||
+ | ==== Development ==== | ||
+ | The E 127 Kw/4 has been produced in the mid-fifties until the mid-sixties in different variants and has mainly been used by official agencies, for weather reports, press communication and as monitoring and surveillance receiver.\\ | ||
+ | The Swiss Army used the commercial variant E 127 Kw/4 painted in grey with connectors on the rear face. | ||
+ | |||
+ | ==== Field use ==== | ||
+ | |||
+ | {{gallery>: | ||
+ | |||
+ | ==== Manuals ==== | ||
+ | * {{ : | ||
+ | |||
+ | ==== Additional information ==== | ||
+ | * [[http:// | ||
+ | * [[https:// |
en/e-640.txt · Zuletzt geändert: 2019/04/07 18:27 von 127.0.0.1