شهر دریا آخرین اخبار رویدادها و معرفی اماکن گردشگری استان بوشهر


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VHF Propagation Map. APRS mapping suspended pending an open source solution. Watch this page for updates. Jon, NG0E 25 September 2018.


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The areas noted in the forecast have the necessary atmospheric conditions to produce tropospheric bending of VHF, UHF and/or microwave radio waves.


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Oct 15, 2018 ... VHF/UHF "Openings" happen sporatically and you cannot predict them as well as HF propagation. VHF and UHF can be affected by the ...


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While HF propagation pundits are concerned with the ionosphere, VHF/UHF ... By studying weather maps and the forecast you should be able to predict when ...


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Forecasts for Europe and mediterranean sea. h+6. h+12. h+15. h+15. h+15. h+18 . h+21. h+24. h+27. h+30. h+33. h+36. h+39. h+42. h+45. h+48. h+54. h+60.


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Higher frequencies experience the most dramatic increase of signal strengths, while on low-VHF and HF the effect is negligible. Propagation path attenuation ...


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VHF Propagation Map Can anyone explain the color codes and how the map ... Tropospheric Ducting Forecast for VHF & UHF Radio & TV


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May 30, 2010 ... There is a tropospheric ducting prediction site called Worldwide Tropospheric ... The next propagation type known to abnormally affect VHF ...


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QRadioPredict is an experimental software for VHF-UHF propagation prediction and radio coverage analysis. Currently it works on Linux and Windows 32 bit ...


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NGØE's VHF Propagation Map displays current VHF band openings during the .... SWPC Pred: The predicted daily Penticton 10.7cm solar radio flux from the ...