Canal de EA4FSI
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Long wire antenna over real ground
ea4fsi
596 views
Long wire antenna over real ground. Lenghts of 0.5 and 2.5 wavelengths and heights from 0.05 to 1 wavelengths. Average type ground. 3D radiation patterns simulated in 4Nec2...
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Long wire antenna in free space
ea4fsi
644 views
Long wire antenna in free space. 3D radiation patterns simulated in 4Nec2.
Antena de hilo largo en el espacio libre. Diagramas de radiación 3D simulados con 4Nec2.
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Halloween Solar Storm - D-Region Absorption in the HF band due to a X28 flare
ea4fsi
316 views
D-Region Absorption Prediction in the HF band after a X28 solar flare during the Halloween Storm (04-Nov-2003). The absorption is due to the X-Rays emitted from the Sun, ca...
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4Nec2 Rhombic antenna - Variations of height
ea4fsi
874 views
4Nec2 simulation of the radiation pattern of a terminated rhombic antenna designed for 14 MHz. Effects of the variation of the height of installation "H" between 2,5 m and ...
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4Nec2 Rhombic antenna - Variations of the acute angle
ea4fsi
1,665 views
4Nec2 simulation of the 3D radiation pattern of a terminated rhombic antenna designed for 14 MHz. Effects of the variation of the acute angle "A" of rhombus between 30 degr...
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Evolución diaria de la ionosfera - Daily evolution of the ionosphere
ea4fsi
1,560 views
Reproducción de los datos obtenidos el 18 de marzo de 2010 por la estación de sondeo ionosférico de El Arenosillo (Huelva, España), donde se aprecia la evolución diaria de ...
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Radioaficionados en el terremoto de Chile (03/03/2010)
ea4fsi
5,803 views
Vídeo del canal Meganoticias de Chile, emitido el 03/03/2010, sobre la actividad de los radioaficionados como medio de comunicación de emergencias tras el terremoto
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VHF monopole antenna at variable height - 3D radiation pattern - 4NEC2 simulation
ea4fsi
3,168 views
Analysis of the effects derived from installing a VHF monopole at different heights over ground, made with 4NEC2.
Análisis de los efectos causados al instalar a distintas ...
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VHF monopole antenna at variable height - Vertical radiation pattern - 4NEC2 simulation
ea4fsi
1,595 views
Analysis of the effects derived from installing a VHF/UHF monopole at different heights over ground, made with 4NEC2.
Análisis de los efectos causados al instalar a distin...
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EA4SPC - REMER Emergency Radio Network deployment for GlobalSET Nov 2009
ea4fsi
825 views
REMER HF operations board during the GlobalSET Exercise (Nov 2009). Portable deployment. Spanish Civil Protection National School.
Mesa de operaciones de HF de REMER du...
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