ARLA/CLUSTER: Low profile duplex UHF Repeater for Ham radio Emergency Communications - YO3HJV

[João Costa > CT1FBF]

É por acaso radio "reconvertido" que já vi em alguns echolinks nacionais.

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.

O andar final recomenda-se, muito embora o Front End deixe algo a desejar.

Um verdadeiro equipamento  de "combate".

João Costa (CT1FBF)

2016-02-01 17:06 GMT+00:00 Sergio Matias <srg814  gmail.com>:

> Low profile duplex UHF Repeater for Ham radio Emergency Communications
>
> «A few years ago I start to think about a small, portable and very
> reliable duplex repeater for emergency communications.
> 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.
> 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.»
>
> «Based on my experience with various radios, "the chosen one" was the
> small GP300 from Motorola.»
>
> (...)
>
> Link:
> http://yo3hjv.blogspot.ro/2016/02/low-profile-duplex-uhf-repeater-for-ham.html
>
> 73,
> -- Sérgio Matias, ct1hmn
>
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