en:e-622
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+ | ====== E-622: Lorenz Eo 509 / I ====== | ||
+ | **E-622**, All wave TRF receiver **Lorenz EO 509 / I**; developed and produced by [[Lorenz|C. Lorenz Aktiengesellschaft, | ||
+ | In the first six high power wireless stations [[SE-302|G1, | ||
+ | |||
+ | {{:: | ||
+ | ===== Technical Data ===== | ||
+ | * [[Principle]]: | ||
+ | * [[Modes]]: [[A3|AM (A3)]], | ||
+ | * [[Frequency range]]: 15 kHz - 20 MHz in twelve ranges, turret tuner | ||
+ | * **Analog dial**, nonlinear | ||
+ | * [[Sensitivity]]: | ||
+ | |||
+ | ==== Power Supply ==== | ||
+ | * [[Accumulator / Batteries]]: | ||
+ | |||
+ | ==== Dimensions ==== | ||
+ | * 450 x 320 x 395 mm, 30 kg | ||
+ | |||
+ | ==== Accessories ==== | ||
+ | * different long wire antennas could be used as standard antenna | ||
+ | |||
+ | ---- | ||
+ | {{: | ||
+ | ===== Operation ===== | ||
+ | The **Lorenz EO 509 / I** is a tuned radio frequency receiver with four tubes. | ||
+ | |||
+ | The **" | ||
+ | |||
+ | In the middle of the front panel, the main switch " | ||
+ | |||
+ | At the right of the main power switch and the headphone jacks, the regeneration control (increased regeneration does improve sensitivity and selectivity, | ||
+ | |||
+ | On the left side of the receiver, the range selector, the connectors for the batteries, the antenna (short and long wire) and ground connecors, the antenna blocking circuit (an unwanted signal from a strong nearby transmitter can be phased out) and the control for the emergency detector are located. | ||
+ | |||
+ | ===== Technical Principle ===== | ||
+ | {{: | ||
+ | After a RF amplifier stage ([[de: | ||
+ | |||
+ | To receive unmodulated Morse transmissions ([[CW]]), the regeneration control is turned up, until the set starts to oscillate; then the unmodulated signal becomes audible. | ||
+ | |||
+ | A blocking circuit can be activated to eliminate an unwanted signal in the range 1000 - 3750 kHz; furthermore, | ||
+ | |||
+ | As found in other German (naval) receivers from the thirties, the EO 509 is equipped with a crystal detector for emergency reception in case of battery power failure. | ||
+ | |||
+ | ==== Valve setup ==== | ||
+ | V1 ([[de: | ||
+ | |||
+ | ==== Development ==== | ||
+ | The Lorenz EO 509 / I receiver is a typical example of a German naval receiver: due to the theoretical possibility of radiating the oscillator signal of a superheterodyne receiver over the receiving antenna, which could lead to detection of the receiver site, the German Navy used only TRF regenerative | ||
+ | |||
+ | ==== Field use ==== | ||
+ | The technical characteristics (sensitivity and selectivity) of the Lorenz receiver did not match the performance of american superheterodyne receivers, so the Lorenz receiver was soon considered as obsolete and was replaced in the second series of the [[SE-302|G1, | ||
+ | |||
+ | {{gallery>: | ||
+ | |||
+ | ==== Manuals ==== | ||
+ | * {{ : | ||
+ | |||
+ | ==== Additional information ==== | ||
+ | * [[http:// | ||
+ | * [[https:// | ||
+ | * [[http:// |
en/e-622.txt · Zuletzt geändert: 2019/04/01 07:20 von 127.0.0.1