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en:se-218 [2019/10/30 19:22] (aktuell)
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 +====== SE-218/m: Short-/ Longwave Station 43 / G-Station ======
 +**Kurz Lang Station 43** (Short Long Station 43), **KL43** resp. **SE-218/​m**;​ developed and produced [[Zellweger,​ Uster]].
  
 +The [[Zellweger]] Company, based in Uster, did develop the **Funkstation Kurz Lang 43** (Short Long Station 43) based on the components of the [[SE-300|FL 40]] (Mobile Light Station 40) in the years 1943/44 to replace the Telefunken Short- / Longwave Station [[SE-217|Kurz - Lang - Station / D-Station]]. Because of the World War II, Telefunken was inable to provide enough systems of the shortwave / longwave station which was used in the Anti Aircraft Coordination Network.
 +
 +{{:​images:​se-218-kl43-fahrzeug-b.jpg?​direct&​300|}}\\ ​
 +In contrast to the [[FL40]]m the KL 43 has a better coverage of high frequencies in the shortwave range used by the airforce. The station was mostly used onboard a truck; when the roof antenna was used, the station could even be operated while on the move.
 +
 +{{:​images:​se-218-kl43-empfaenger.jpg?​direct&​320|KL43:​ Empfänger}}{{:​images:​se-218-kl43-sender.jpg?​direct&​320|KL43:​ Sender}}
 +
 +===== Technical Data =====
 +  * [[Principle]]:​ Wireless station with separate [[Transmitter]] and [[Receiver]]:​ [[Double conversion|Double / single conversion superhet]], [[IF]] 70 / 465 kHz
 +  * [[Modes]]: [[A1]], [[A3|AM (A3)]], [[A3J|SSB (A3J]] reception only with BFO
 +  * [[Frequency range]]: Transmitter 300 - 600 kHz and 3 - 12 MHz, Receiver [[E41|E41 spez.]] 200 kHz - 24 MHz
 +  * [[Sensitivity]]:​ [[A1]] 2 μV, [[A3|AM (A3)]] 3 μV / [[Selectivity]]: ​
 +  * [[Output power]]: [[A1]] 80 - 120 W, [[A3]] 25 - 35 W
 +
 +==== Power Supply ====
 +  * [[Generator]]:​ Three phase generator Uster (50V, 150 Hz) whch can be driven from a fuel operated or electric motor; for mobile operation, the station can be powered from a vehicle generator built in the truck.
 +
 +==== Dimensionen ====
 +  * complete station equipment 817 kg
 +  * the **transmitter** is stored in chest No.5, 720 x 600 x 730 mm, without the chest 75 kg, with the chest included 106 kg
 +  * the **receiver** is stored in chest No.6, 660 x 580 x 730 mm, without the chest 75 kg, with the chest included 109 kg 
 +  * the complete **GM-Station** in the truck has the dimensions of 6,6 x 2,15 x 2,85 m and a total weight og 5000 kg.
 +
 +==== Accessories ====
 +{{ :​images:​se-218-kl43-ttg.jpg?​direct&​200|TTG (Fernbetriebsgerät)}}
 +  * for mobile use, a **roof antenna** is used
 +  * for **shortwave** operation, a 12 m mast with five radial counterpoise wires is provided.
 +  * for **longwave** operation, a 30 m long wire antenna between two 12 m masts is provided, the counterpoise wires were laid on the ground.
 +  * the "​G-Station"​ is equipped for **remote operation**. On the receiver side, a remote control unit with an AF generator is mounted on the receiver track. On the transmitter side, an additional remote control unit, the so called **TTG** (Tontastgerät) is mounted between the transmitter and the field telephone connection. There is a selector for telephony, telegraphy operation (with a 900 Hz filter) and service telephone connection.
 +
 +{{:​images:​se-218-iguem-cplt.jpg?​direct&​600|SE-218 / KL Zellweger}}
 +===== Operation =====
 +{{ :​images:​se-218-kl43-sender-bereit.jpg?​direct&​400|KL43 Sender betriebsbereit}} The mobile **short-/ longwave station 43**, **KL 43** or so called **G Station** is a wireless station mounted on a light truck consisting of equipment of the [[FL40]] with an extended frequency range. Thanks to the vehicle power generator and the roof antenna, the station can be operated while on the move.
 +
 +As the station'​s transmitter,​ the reliable [[S-300|transmitter of the FL 40]] with a modified frequency range is used. As found in the similar Telefunken [[SE-217|D-Station]],​ the transmitter is mounted on a metal frame.
 +
 +IN contrast to the transmitter of the [[SE-300|FL 40]], the frequency bands are much higher: 300 - 380 / 380 - 600 kHz and 3000 - 5330 / 5330 - 8000 and 8000 - 12000 kHz, the frequency of 8000 kHz can be calibrated with a luminous crystal.
 +
 +The transmitter has three stages, a [[EBL21]] in the oscillator / exciter stage, two [[EBL21]] in frequency doubler stage and two [[OS41/​1250]] in the power amplifier stage. Operation modes are A1 (CW), A2 (modulated telegraphy) and A3 (telephony);​ the modulattor stage ([[EBL21]]) acts on the grids of the power amplifier stage. The output power is switchable, in position „Einpfeifen“ ("​tune"​) / „Low“ it is 5 - 7 Watt, in position „Medium“ 20 - 30 W and in position „High“ 80 - 120 W.
 +
 +The plate voltage of 330 V in the exciter / modulator stages and 1200 V in in the power amplifier stage is generated from the three phase 50V / 150 Hz voltage via a transformer and four [[PV 200/600]] rectifier valves.
 +
 +{{ :​images:​se-218-kl43-empfaenger-bereit.jpg?​direct&​400|KL43 Empfänger, einsatzbereit}} The receiver of the KL 43 is the "​Allwellenempfänger Uster" or [[E41]] in in a variant with a reduced number of coils; it covers only 200 kHz - 24 MHz and has a special tuning knob with a fine tuning gear.
 +
 +===== Technical Principle =====
 +description above
 +
 +==== Valve layout ====
 +description above
 +
 +==== Development ====
 +Because Germany entered World War II and the telefunken wireless station [[SE-217|D-Station]] was no longer availabe, a replacement was needed. [[Zellweger]] modified components of the [[SE-300|FL40]] according to the frequency requirements of the air force and the station was mounted on a light truck similar to its telefunken twin.
 +
 +Of the **GM-Station** (mobile) in a light truck Berna (price 105'​000.- Fr.) and as **GK-Station** (portable) in ten chests and two accumulators (price 60'​000.- Fr.), initially 15 stations have been ordered. With later additions, the total number was 42 stations.
 +
 +==== Einsatz ====
 +{{ :​images:​se-218-kl43-fahrzeug.jpg?​direct&​400|KL43 im Kastenwagen }}
 +
 +Designated as "​G-Station",​ the KL 43 has been used in the anti aircraft coordination network of the Swiss air force / anti aircraft units.
 +
 +After introduction of TO 51, the station got the new designation SE-218/m; after 1962 it was still in use by  Landsturm Fk Kp until it was completely faded out in 1967.
 +
 +{{gallery>:​images?​se-218*.jpg&​0&​80x80&​lightbox&​showtitle&​titlesort}}
 +
 +===== Technical Manuals =====
 +  * {{ :​manuals:​se-218m-kl43-g-station-lehrblaetter.pdf |SE-218: G-Station (Lehrblätter),​ Fl.u.Flab.Trp.}}
 +  * {{ :​manuals:​se-218m-kurz-lang-station-manual-zag.pdf |SE-218: Kurz - Lang - Station, Zellweger AG}}
 +  * {{ :​manuals:​zusatzgeraete-fuer-fernbesprechung-kl-43.pdf |SE-218: Zusatzgeräte für Fernbesprechung & Ferntastung Funkstationen Typ G}}
 +
 +==== Additional Information ====
 +  * [[http://​armyradio.ch/​radio-d/​se-218.htm|SE-218/​m / KL43 on www.armyradio.ch]]
 +  * [[https://​www.hamfu.ch/​de/​geraete/​geraet.php?​id=117|SE-218/​m / KL43 on the Hamfu website]]
 +  * [[https://​www.radiomuseum.org/​r/​zellweger_kurz_lang_station_kl_43.html|SE-218/​m / KL43 on www.radiomuseum.org]]
en/se-218.txt · Zuletzt geändert: 2019/10/30 19:22 von mb