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- <!DOCTYPE html> <html lang="pt-BR"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Calculadora de Propagação HF (Baseado em Dados de Ionosonda)</title> <style> body { font-family: sans-serif; line-height: 1.6; margin: 20px; background-color: #f4f4f4; } .container { max-width: 600px; margin: auto; background: #fff; padding: 20px; border-radius: 8px; box-shadow: 0 0 10px rgba(0, 0, 0, 0.1); } h2, h3 { color: #333; border-bottom: 1px solid #eee; padding-bottom: 10px; margin-bottom: 20px; } label { display: block; margin-bottom: 8px; font-weight: bold; } input[type="number"] { width: calc(100% - 22px); padding: 10px; margin-bottom: 20px; border: 1px solid #ccc; border-radius: 4px; } button { background-color: #5cb85c; color: white; padding: 10px 15px; border: none; border-radius: 4px; cursor: pointer; font-size: 16px; } button:hover { background-color: #4cae4c; } .result { margin-top: 20px; padding: 15px; background-color: #dff0d8; border: 1px solid #d0e9c6; color: #3c763d; border-radius: 4px; } .error { margin-top: 20px; padding: 15px; background-color: #f2dede; border: 1px solid #ebccd1; color: #a94442; border-radius: 4px; } .info { margin-top: 20px; font-size: 0.9em; color: #555; } </style> </head> <body> <div class="container"> <h2>Calculadora Simplificada de Propagação HF</h2> <div class="info"> <p>Esta calculadora utiliza valores de foF2 e M(3000)F2 (tipicamente obtidos de dados de ionosonda como os do INPE) para estimar a Frequência Máxima Utilizável (MUF) para um caminho de 3000 km.</p> <p><strong>Fonte de dados (referência):</strong> <a href="https://embracedata.inpe.br/ionosonde/" target="_blank">https://embracedata.inpe.br/ionosonde/</a> (Note: Este script NÃO puxa dados automaticamente desta URL, que é um portal de visualização. Você deve inserir os dados manualmente baseados nas informações que obtiver de lá ou de outras fontes de ionosonda).</p> </div> <form action="" method="post"> <label for="foF2">foF2 (MHz):</label> <input type="number" step="0.1" id="foF2" name="foF2" required value=""><br><br> <label for="m3000f2">M(3000)F2:</label> <input type="number" step="0.01" id="m3000f2" name="m3000f2" required value=""><br><br> <button type="submit">Calcular MUF(3000)</button> </form> Warning: Undefined array key "REQUEST_METHOD" in /in/agaFT on line 95 </div> </body> </html>
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- 2022-12-01 RFC: Property hooks - included in PHP 8.4
- 2020-03-21 RFC: Is_Literal - declined
- 2020-12-04 Enumerations - included in PHP 8.1
- 2018-06-15 Typed Properties v2 - implemented in PHP 7.4
- 2016-08-12 Object typehint - included in PHP 7.2
- 2016-08-14 Arrow functions - withdrawn
- 2016-05-29 array_change_keys() - withdrawn
- 2016-04-19 Lexical scope support for anonymous classes - suspended
- 2016-04-17 Functional Interfaces - declined
- 2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
- 2015-08-27 Callable Prototypes - declined
- 2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
- 2015-02-18 Scalar type hints v5 - included in PHP 7
- 2015-02-14 Union Types - declined
- 2013-09-22 Anonymous classes - included in PHP 7