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en:se-108 [2018/12/25 17:15]
mb
en:se-108 [2018/12/25 17:33] (aktuell)
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 ==== Accessories ==== ==== Accessories ====
   * Standard antenna is a whip antenna consisting of ten segments and a total length of 3,3 m, in addition to this two counterpoise wires of 5 m of length.   * Standard antenna is a whip antenna consisting of ten segments and a total length of 3,3 m, in addition to this two counterpoise wires of 5 m of length.
 +  * In later years, a **NG K1 K1A P P5** power supply was available to power the set without the need for batteries.
  
 ---- ----
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 {{ :​images:​se-108-zellweger-k1-bedienung.jpg?​direct&​400|}} The operation of the transceiver is uncomplicated:​ The huge frequency dial pointer also acts as tuning knob, it does directly operate the main tuning capacitor of the transmitter and receiver sections. Press the two pushbuttons at both sides of the dial pointer to move it, it will lock in 10 kHz steps mechanically. A rotary control "​Empfangsnachstellung"​ permits to shift the receiver'​s operation frequency +/- 20 kHz. {{ :​images:​se-108-zellweger-k1-bedienung.jpg?​direct&​400|}} The operation of the transceiver is uncomplicated:​ The huge frequency dial pointer also acts as tuning knob, it does directly operate the main tuning capacitor of the transmitter and receiver sections. Press the two pushbuttons at both sides of the dial pointer to move it, it will lock in 10 kHz steps mechanically. A rotary control "​Empfangsnachstellung"​ permits to shift the receiver'​s operation frequency +/- 20 kHz.
 +
 As found in other Zellweger sets, the main switch has it's zero / off position in the middle, turn it to the left for telegraphy mode and to the right for telephony mode, the control also acts as volume control. A ring switch at the microphone / headphones combination activates the transceiver. As found in other Zellweger sets, the main switch has it's zero / off position in the middle, turn it to the left for telegraphy mode and to the right for telephony mode, the control also acts as volume control. A ring switch at the microphone / headphones combination activates the transceiver.
 +
 Use the antenna tuning control to adjust for a maximum reading on the antenna current instrument when the transmit switch is activated; the meter can also be switched to indicate the heaters (blue/​yellow) and anode / B+ voltages (red/​black),​ too. Use the antenna tuning control to adjust for a maximum reading on the antenna current instrument when the transmit switch is activated; the meter can also be switched to indicate the heaters (blue/​yellow) and anode / B+ voltages (red/​black),​ too.
  
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 ===== Technical Principle ===== ===== Technical Principle =====
-{{:​images:​se-108-zellweger-k1-chassis.jpg?​direct&​150 |}} The set uses the valve types Tungsram [[de:KF3U]] and [[de:​CB220U]]: ​In the **transmitter** in the oscillator stage (V1) a [[de:KF3U]] is used, in the amplifier and fimal amplifier stage (V2, V3) two [[de:​CB220U]]) are used. In the modulator stage (V8), another [[de:​CB220U]] is found.+{{:​images:​se-108-zellweger-k1-chassis.jpg?​direct&​150 |}} The set uses the valve types Tungsram [[de:KF3U]] and [[de:​CB220U]]: ​On the **transmitter** ​side, in the oscillator stage (V1) a [[de:KF3U]] is used, in the amplifier and fimal amplifier stage (V2, V3) two [[de:​CB220U]]) are used. In the modulator stage (V8), another [[de:​CB220U]] is found.
  
-In the **Receiver** the signal from the antenna is mixed in the mixer stage (V4, [[de:​KF3U]]) to generate the intermediate frequency, the IF is amplifies ​in two stages (V5, V6: [[de:KF3U]] each) and demodulated in V7 ([[de:​CB220U]]).+In the **Receiver** the signal from the antenna is mixed in the mixer stage (V4, [[de:​KF3U]]) to generate the intermediate frequency, the IF is amplified ​in two stages (V5, V6: [[de:KF3U]] each) and demodulated in V7 ([[de:​CB220U]]).
  
 ==== Valve layout ==== ==== Valve layout ====
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 For use of the artillery units and as a replacement set for the [[SE-210|TL]],​ [[Zellweger]] developed the "​K-Station"​ with an operation distance of 5 km in telephony and 10 km in morse code telegraphy [[A1]], which was introduced with the troops ins 1937/39. For use of the artillery units and as a replacement set for the [[SE-210|TL]],​ [[Zellweger]] developed the "​K-Station"​ with an operation distance of 5 km in telephony and 10 km in morse code telegraphy [[A1]], which was introduced with the troops ins 1937/39.
  
-The number of sets (143 units or according to the documentation "​Funkstationen der Armee" 133 sets for a price of 4'​700.- Fr. each) was nur sufficient for the needs of the artillery. Because of other services, which used the small frequency range and led to overcorwding ​of the frequencie, [[Zellweger]] developed the [[SE-109|K1A]],​ which used the 22 - 28 MHz frequency range.+The number of sets (143 units or according to the documentation "​Funkstationen der Armee" 133 sets for a price of 4'​700.- Fr. each) was not sufficient for the needs of the artillery. Because of other services, which used the small frequency range and led to overcrowding ​of the frequencies, [[Zellweger]] developed the [[SE-109|K1A]],​ which used the 22 - 28 MHz frequency range.
  
 ==== Field Use ==== ==== Field Use ====
en/se-108.txt · Zuletzt geändert: 2018/12/25 17:33 von mb