{"id":1700,"date":"2025-09-23T14:50:40","date_gmt":"2025-09-23T14:50:40","guid":{"rendered":"https:\/\/gfgmarine.com\/?p=1700"},"modified":"2026-11-11T17:46:50","modified_gmt":"2026-11-11T17:46:50","slug":"why-you-need-a-fishfinder-and-why-it-is-so-important","status":"publish","type":"post","link":"https:\/\/gfgmarine.com\/pt-br\/articles\/why-you-need-a-fishfinder-and-why-it-is-so-important\/","title":{"rendered":"Por que voc\u00ea precisa de um sonar de pesca"},"content":{"rendered":"<div class=\"product\"><div class=\"product\">\n<p class=\"wp-block-paragraph\">Saber a profundidade sempre foi importante. Assim que as pessoas come\u00e7aram a navegar e surgiram os primeiros barcos, foi preciso um jeito de medi-la para n\u00e3o encalhar.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Hoje esse trabalho \u00e9 do sonar de pesca. Ele mostra a profundidade embaixo do barco e o formato do fundo, e isso ajuda voc\u00ea a:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>achar os pontos onde fica o peixe de fundo e, por isso, onde est\u00e3o os predadores;<\/li>\n\n\n\n<li>passar com seguran\u00e7a por trechos dif\u00edceis do rio;<\/li>\n\n\n\n<li>evitar danos ao motor, \u00e0 h\u00e9lice ou ao casco;<\/li>\n\n\n\n<li>se sentir mais seguro num lugar que voc\u00ea n\u00e3o conhece.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea vai pescar num lugar novo, onde nunca esteve, \u00e9 quase imposs\u00edvel se virar sem sonar. D\u00e1 para tentar se orientar \u201cdo jeito antigo\u201d, pela margem ou pelas marolas na \u00e1gua, mas isso n\u00e3o tem a precis\u00e3o nem a confiabilidade necess\u00e1rias.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Como funciona um sonar e por que ele mostra os peixes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Ent\u00e3o, como funciona um sonar de pesca, e por que vemos peixes na tela? O princ\u00edpio \u00e9 simples.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Todo sonar vem com um sensor, chamado transdutor. Na maioria das vezes ele \u00e9 pequeno, mas recentemente surgiram vers\u00f5es maiores, como os transdutores de imagem estrutural. Ele costuma ser instalado na popa do barco.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ele funciona com ondas sonoras. O transdutor emite um sinal que bate no fundo ou em objetos na coluna d&#8217;\u00e1gua e volta. Essa informa\u00e7\u00e3o vai para a \u201cunidade principal\u201d do sonar, que processa tudo e transforma em imagem na tela.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Como isso aparece? No sonar Broadband (e n\u00e3o nas tecnologias modernas de imagem estrutural, que desenham o relevo e os objetos em detalhe), o fundo costuma aparecer como uma linha. A profundidade dessa linha muda conforme o terreno embaixo do barco.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os peixes podem aparecer na tela de formas diferentes:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>como arcos: o m\u00e9todo antigo, t\u00edpico dos primeiros sonares;<\/li>\n\n\n\n<li>como pontos ou pequenas silhuetas em forma de peixe, como nos modelos atuais.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0s vezes a imagem permite at\u00e9 adivinhar a esp\u00e9cie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Quanto mais tempo voc\u00ea passa com o sonar na \u00e1gua e quanto mais estuda a tela, mais f\u00e1cil fica saber que peixe est\u00e1 embaixo do barco: predador ou n\u00e3o. Para pescadores experientes, isso vira quase intui\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">O que \u00e9 o sonar ao vivo<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">O sonar ao vivo (Live Sonar) mostra em tempo real e em alta resolu\u00e7\u00e3o o movimento dos peixes, com muito mais detalhe. O sistema envia pulsos sonoros na \u00e1gua e mostra na hora os peixes e objetos que refletem esses pulsos.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cada fabricante d\u00e1 um nome diferente a esse sistema:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Lowrance: ActiveTarget<\/li>\n\n\n\n<li>Garmin: Panoptix<\/li>\n\n\n\n<li>Humminbird: Mega Live<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Saber a profundidade sempre foi importante. Assim que as pessoas come\u00e7aram a navegar e surgiram os primeiros barcos, foi preciso um jeito de medi-la para n\u00e3o encalhar. Hoje esse trabalho \u00e9 do sonar de pesca. Ele mostra a profundidade embaixo do barco e o formato do fundo, e isso ajuda voc\u00ea a: Se voc\u00ea vai [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jf_save_progress":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[114,122,130,98],"tags":[],"class_list":["post-1700","post","type-post","status-publish","format-standard","hentry","category-garmin","category-humminbird","category-lowrance","category-echosounder-chartplotter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Por que usar um sonar de pesca: como 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