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en:e-624 [2019/04/04 07:35]
mb [Accessories]
en:e-624 [2019/04/04 12:03] (aktuell)
mb [Field use]
Zeile 68: Zeile 68:
  
 ==== Field use ==== ==== Field use ====
-The S-27 is a very early example of a receiver with [[VHF]] coverage, it was used primarily for military radio monitoring. On a historical photograph of the VHF monitoring station in the Sphinx Observatory on the Jungfraujoch an E-624 / [[Hallicrafters]] S-27 can be recognized as a VHF surveillance receiver.+{{:​images:​einsatz-abhorch-sphinx-observatorium.jpg?​direct&​400 |Abhorchstation im Sphinx-Observatorium}} ​The S-27 is a very early example of a receiver with [[VHF]] coverage, it was used primarily for military radio monitoring. On a historical photograph of the VHF monitoring station in the Sphinx Observatory on the Jungfraujoch an E-624 / [[Hallicrafters]] S-27 can be recognized as a VHF surveillance receiver.
  
 Even after the set was developed in 1940, it took several years, until the VHF band was used for FM broadcasting in the United States, first the 6m band around 50 MHz was assigned to broadcasting,​ and shortly after, the 3m band up to 100 MHz was assigned to broadcasting. Air traffic radio services, which use the 118 - 137 MHz frequency range, were moved only in the post-war years from shortwave to [[VHF]] frequencies. ​ Even after the set was developed in 1940, it took several years, until the VHF band was used for FM broadcasting in the United States, first the 6m band around 50 MHz was assigned to broadcasting,​ and shortly after, the 3m band up to 100 MHz was assigned to broadcasting. Air traffic radio services, which use the 118 - 137 MHz frequency range, were moved only in the post-war years from shortwave to [[VHF]] frequencies. ​
en/e-624.txt · Zuletzt geändert: 2019/04/04 12:03 von mb