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- Alexanderson_Day abstract "Alexanderson Day, named after the Swedish radio engineer Ernst Fredrik Werner Alexanderson and held either on the last Sunday in June, or on the first Sunday in July, whichever comes closer to 2 July, is the day of the open house at the Swedish government VLF transmitter Grimeton, call sign SAQ, located near Varberg. On Alexanderson Day, Christmas Eve, and at other times during the year, the only workable Alexanderson alternator transmitter in the world is used to transmit short Morse messages on 17.2 kHz, which should be easily receivable in all of Europe. The transmitter is preserved as a historical remnant of early radio technology and as an example of VLF (Very Low Frequency) equipment.These transmissions cannot be received by ordinary radios because of their low frequency. Modern enthusiasts often monitor the transmissions using a PC with a coil connected to the soundcard input and FFT analysis software, or a short-wave receiver with an upconverter, or any of several receivers designed to receive VLF transmissions directly. In recent years, Software-defined radio receivers have proven to be very useful and effective in receiving transmissions from SAQ around the world.".
- Alexanderson_Day wikiPageExternalLink www.alexander.n.se.
- Alexanderson_Day wikiPageID "1256065".
- Alexanderson_Day wikiPageRevisionID "578940158".
- Alexanderson_Day hasPhotoCollection Alexanderson_Day.
- Alexanderson_Day subject Category:December_observances.
- Alexanderson_Day subject Category:History_of_radio.
- Alexanderson_Day subject Category:July_observances.
- Alexanderson_Day type Abstraction100002137.
- Alexanderson_Day type Act100030358.
- Alexanderson_Day type Activity100407535.
- Alexanderson_Day type DecemberObservances.
- Alexanderson_Day type Event100029378.
- Alexanderson_Day type JulyObservances.
- Alexanderson_Day type Look100877127.
- Alexanderson_Day type Observation100879759.
- Alexanderson_Day type PsychologicalFeature100023100.
- Alexanderson_Day type Sensing100876874.
- Alexanderson_Day type SensoryActivity100876737.
- Alexanderson_Day type YagoPermanentlyLocatedEntity.
- Alexanderson_Day comment "Alexanderson Day, named after the Swedish radio engineer Ernst Fredrik Werner Alexanderson and held either on the last Sunday in June, or on the first Sunday in July, whichever comes closer to 2 July, is the day of the open house at the Swedish government VLF transmitter Grimeton, call sign SAQ, located near Varberg.".
- Alexanderson_Day label "Alexanderson Day".
- Alexanderson_Day sameAs m.04mn1r.
- Alexanderson_Day sameAs Q4720538.
- Alexanderson_Day sameAs Q4720538.
- Alexanderson_Day sameAs Alexanderson_Day.
- Alexanderson_Day wasDerivedFrom Alexanderson_Day?oldid=578940158.
- Alexanderson_Day isPrimaryTopicOf Alexanderson_Day.