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Kjell SM2FOB (ex SM0FOB) QTH BODEN KP05vs SWEDEN - ITU18 WAZ14

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January 29, 2009

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Felix & Saga - My Grandchildren

January 23, 2009

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Lip Dub Pop Muzik

January 19, 2009

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Editing Video Files

January 14, 2009

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Snowmobile Crossing

January 10, 2009

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Winter In The North

January 09, 2009

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Netbook Acer Aspire One A0A150

January 04, 2009

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Testing WXVGA Recording With A Lumix LX3

December 29, 2008

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Testing HD Recording With A Lumix LX3

December 29, 2008

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Europeana: think culture

December 28, 2008

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HD Video Panasonic Lumix DMC-LX3

December 25, 2008

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Panasonic Lumix DMC-LX3 Photos

December 25, 2008

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Panasonic Lumix DMC-LX3

December 25, 2008

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Arkiv

2018 1
- June 1
  - Jun 22 1
    
    Receiving Japan on 50 MHz

2017 26
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2009 86
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2008 85
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Popular Posts

DXing with JTDX on 50 MHz

DXing with JTDX on 50 MHz - Kjell SM2FOB RX Icom IC-7300, ANT Broadband Scanner Antenna, QTH Boden KP05vs June 5 2017 - ODX OE5OLL JN68si 1,995 km June 6 2017 - ODX EA8DBM Canary Islands 4,931 km June 6 2017

ROS - A new digital mode

ROS, developed by José Albert Nieto Ros, is a new digital mode under test. Using spread spectrum and 1 or 16 Baud signalling rates it is designed to cope with disturbancies, low level signals, meteor scatter and moon bounce says José. He claims that receiving signals down to -35 dB (!) with 1 Bd signalling rate and -30 dB (!) with 16 Bd are possible. Today I tested 16 Bd reception on 14.1011 MHz. My set-up is shown above with the PC microphone close to a Yaesu FT-857D. This PC screen dump shows that I did receive PA0JMK in The Netherlands calling YU1RP in Yugoslavia. Unfortunately the vertical screen resolution of my mini-PC is not large enough to show the waterfall part of the ROS GUI. ROS home page from where you can download the software, instructions etc. is here and a video is here . The ROS mode has caused som stir as it occupies a large bandwidth of 2.2 kHz in the HF bands. The mode has become forbidden to use in the U.S. because of the spre...

Hunting Schumann Resonances

Quote Wikipedia : The Schumann resonances are a set of spectrum peaks in the extremely low frequency portion of the Earth's electromagnetic field spectrum. Schumann resonances are global electromagnetic resonances, excited by lightning discharges in the cavity formed by the Earth's surface and the ionosphere. This global electromagnetic resonance phenomenon is named after physicist Winfried Otto Schumann who predicted it mathematically in 1952. Schumann resonances occur because the space between the surface of the Earth and the conductive ionosphere acts as a closed waveguide . The limited dimensions of the Earth cause this waveguide to act as a resonant cavity for electromagnetic waves . The cavity is naturally excited by electric currents in lightning. Schumann resonances appear as distinct peaks at extremely low frequencies around 7.83 (fundamental), 14.3, 20.8, 27.3 and 33.8 Hz. Observa...

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