<div dir="ltr">É por acaso radio "reconvertido" que já vi em alguns echolinks nacionais.<div><br></div><div>Segundo os seus promotores tem uma robustez invejável para aguentar as péssimas condições atmosféricas no alto de muitas serras em Portugal onde as temperaturas vão facilmente de -15 ºC no inverno a +50ºC no verão dentro dos abrigos não climatizados. </div><div><br></div><div>O andar final recomenda-se, muito embora o Front End deixe algo a desejar. </div><div><br></div><div>Um verdadeiro equipamento de "combate".</div><div><br></div><div>João Costa (CT1FBF)<br><div class="gmail_extra"><br><div class="gmail_quote">2016-02-01 17:06 GMT+00:00 Sergio Matias <span dir="ltr"><<a href="mailto:srg814@gmail.com" target="_blank">srg814@gmail.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div><div>Low profile duplex UHF Repeater for Ham radio Emergency Communications<br></div><div><br></div><div>«A few years ago I start to think about a small, portable and very reliable duplex repeater for emergency communications.</div><div>The first condition was to be immune to spurious signals from other transmitters because in a real emergency, is presumed that on the air will be a lot of activity.</div><div>Another crucial condition was the ability to operate from a lead acid battery for a long period of time, at leas for 12-24 hrs, depending on the alternative power supply at the site of the repeater. But to be sure, a period of time of 24 hrs was considered.»</div><div><br></div><div>«Based on my experience with various radios, "the chosen one" was the small GP300 from Motorola.»</div></div><div><br></div><div>(...)</div><div><br></div><div>Link: <a href="http://yo3hjv.blogspot.ro/2016/02/low-profile-duplex-uhf-repeater-for-ham.html" target="_blank">http://yo3hjv.blogspot.ro/2016/02/low-profile-duplex-uhf-repeater-for-ham.html</a><br></div><div><br></div><div>73,</div><div>-- Sérgio Matias, ct1hmn</div></div>
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