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en:se-110 [2018/12/25 18:22]
mb
en:se-110 [2018/12/25 18:23] (aktuell)
mb
Zeile 49: Zeile 49:
 The VHF set's range is typical to VHF radiowaves propagation:​ You can reach on visible points nearer then the horizon, so 100 m - 5 km when there is no line of sight, 8 km in telephony and 15 km in telegraphy from an elevated location and up to 30 km in telephony and 50 km in telegraphy from one mountain peak to another hill or exposed location. The VHF set's range is typical to VHF radiowaves propagation:​ You can reach on visible points nearer then the horizon, so 100 m - 5 km when there is no line of sight, 8 km in telephony and 15 km in telegraphy from an elevated location and up to 30 km in telephony and 50 km in telegraphy from one mountain peak to another hill or exposed location.
  
-===== Technisches Prinzip ​=====+===== Technical Principle ​=====
 {{:​images:​se-110-kleinfunkstation-max-prinzipschema.png?​direct&​300 |}} In reception mode, the RF signal coming from the dipole antenna is fed directly to the mixer stage valve Pos. 15 ([[de:​D1F]]),​ there it is mixed with the oscillator signal Pos. 44 ([[de:​D1F]]) to generate the [[IF]] of 25 kHz. Because of the IF is quite low, a signal might appear a second time on the dial 25 kHz below the actual frequency dial reading. After having passed a IF filter, the signal is fed to the IF amplifier stage Pos. 64 ([[de:​D1F]]),​ and from there to the regenerative detector stage Pos. 104 ([[de:​D1F]]) for demodulation,​ after an AF amplifier, the audio signal is fed to the headphones. {{:​images:​se-110-kleinfunkstation-max-prinzipschema.png?​direct&​300 |}} In reception mode, the RF signal coming from the dipole antenna is fed directly to the mixer stage valve Pos. 15 ([[de:​D1F]]),​ there it is mixed with the oscillator signal Pos. 44 ([[de:​D1F]]) to generate the [[IF]] of 25 kHz. Because of the IF is quite low, a signal might appear a second time on the dial 25 kHz below the actual frequency dial reading. After having passed a IF filter, the signal is fed to the IF amplifier stage Pos. 64 ([[de:​D1F]]),​ and from there to the regenerative detector stage Pos. 104 ([[de:​D1F]]) for demodulation,​ after an AF amplifier, the audio signal is fed to the headphones.
  
Zeile 56: Zeile 56:
 For [[A2]] telegraphy the valve Pos. 104 ([[de:​D1F]]) acts as audio generator, the valve Pos. 64 is not in use in this operation mode. For [[A2]] telegraphy the valve Pos. 104 ([[de:​D1F]]) acts as audio generator, the valve Pos. 64 is not in use in this operation mode.
  
-==== Röhrenbestückung ​====+==== Valve layout ​====
 V15 ([[de:​D1F]],​ Transmitting:​ Output stage; receiving: mixer); V44 ([[de:​D1F]],​ transmitting:​ oscillator / driver stage; receiver: oscillator);​ V64 ([[de:​D1F]],​ transmitting:​ microphone amplifier; receiving: IF stage); V104 ([[de:​D1F]],​ transmitting:​ modulator stage; receiving: regenerative detector). V15 ([[de:​D1F]],​ Transmitting:​ Output stage; receiving: mixer); V44 ([[de:​D1F]],​ transmitting:​ oscillator / driver stage; receiver: oscillator);​ V64 ([[de:​D1F]],​ transmitting:​ microphone amplifier; receiving: IF stage); V104 ([[de:​D1F]],​ transmitting:​ modulator stage; receiving: regenerative detector).
  
-==== Entwicklung ​====+==== Development ​====
 The UKW-Kleinfunkstation MAX has been developed by [[Autophon]];​ after a first small batch had been delivered, the Swiss army preferred to acquire less costly frequency modulated VHF sets from U.S. surplus. The UKW-Kleinfunkstation MAX has been developed by [[Autophon]];​ after a first small batch had been delivered, the Swiss army preferred to acquire less costly frequency modulated VHF sets from U.S. surplus.
  
-==== Einsatz ​====+==== Field Use ====
 The VHF wireless station MAX has been introduced with the troops in 1945/6 but was replaced by frequency modulated VHF gear from U.S. Army war surplus available much cheaper then this Swiss made high tech offering. The VHF wireless station MAX has been introduced with the troops in 1945/6 but was replaced by frequency modulated VHF gear from U.S. Army war surplus available much cheaper then this Swiss made high tech offering.
  
en/se-110.txt · Zuletzt geändert: 2018/12/25 18:23 von mb