ARLA/CLUSTER: USA: 5MHz para Comunicações de Emergencia

[João Costa > CT1FBF]

Boa Tarde Colega, Viegas (CT2IXQ) e Boas Festas,

Da minha parte e desde a alguns anos que defendo junto da ANACOM, que
posteriormente aos testes e estudos de propagação que se encontram a
decorrer em Portugal, os 3 canais actuais devem se consignados, mesmo
que a título secundário, para as comunicações de emergência por
radioamadores conjuntamente com as entidades com competências
atribuídas na área da proteção civil.

Aguardo uma tradução a este artigo da Bonnie Crystal ( KQ6XA); Senhora
que muito admiro e a quem mundialmente todos os radioamadores devem
muito nesta área, mas que nem sempre é bem compreendida junto do
"status quo" de algumas "entidades institucionais" norte-americanas.

João Costa (CT1FBF)



ARLA/CLUSTER: USA: 5MHz para Comunicações de Emergencia
Antonio Viegas acviegas hotmail.com
Sábado, 24 de Dezembro de 2011 - 12:11:04 WET

--------------------------------------------------------------------------------

Caros Colegas desejos de Boas Festas, e acabado de chegar este artigo
sobre a banda dos 60M achei importante divulgar por Vós ,tentarei
dentro do espaço de tempo possivel apresentar uma tradução a este
artigo .

ACViegas
CT2IXQ
HFN Pilot Station
IM58KR

USA: 5MHz for EMCOMM, not Ragchew, not Contest/DX
--an article by Bonnie Crystal KQ6XA
===

The 60 meter ham band has quite different
operating privileges in various countries
of the world. The frequencies, rules, purpose,
regulations, operating procedures, and levels of
priority are all different in each country.

In USA, the 5MHz channels for ham radio were
specifically requested, justified, and approved
primarily for Emergency and Disaster Communications.
The stated justification is the need for NVIS and
regional disaster response communications to fill in
the propagation gap between 40 meters and 80 meters.
The process of the Amateur Radio Service gaining
access to these 5MHz frequencies was long and exacting.

Recently, due to another multi-year process of proposal
and rulemaking, FCC increased the privileges slightly
for hams on 5MHz. However, the FCC put even tighter
technical restrictions on 5MHz operation than on any
other ham bands. 60 meters is not a normal ham band.

In this new ruling, FCC re-affirmed and clearly spelled
out major restrictions for hams on 5MHz. Hams are
secondary users (or less) and the Primary users of the
5MHz channels must not be interfered with in any way.

Non-interference with a Primary user isn't just a matter of
stopping transmitting if you are asked to. It can also
mean refraining from transmitting, if there is *any chance*
that you might be preventing a Primary user from utilizing
or starting communications on the channel, even if you are not
asked specifically. The only way we can hope to fulfill our
requirement for non-interference, is to use very short
transmissions and listen/watch carefully between transmissions.

What are some common amateur radio operating practices that
may not be suitable for 5MHz 60 meter band operation in USA?

1. Calling CQ DX.
2. Long CQs.
3. Longwinded ragchews.
4. Calling in pile-ups.
5. High power transmissions.
6. Contesting.
7. Sending a 'brag file' on PSK31

In order to be ready for Emergency/Disaster Communications,
hams need to have good familiarity with the band and have
equipment capable of operating 5MHz. Hams can only do this
by participating in active operating on the 5MHz band.
Somehow, we need to achieve a balance between a good
level of activity and the requirement for non-interference.
Finding this balance may be difficult, but for the most
part, hams are quite adept at good operating habits.

Every ham operator transmitting on 5MHz must pay
special attention to the different operating methods
and procedures that this unique authorization requires.

There are proposals in the works to create an
international ITU allocation of a 60 meter Amateur Radio
Service band with Secondary status.

If hams in USA are found to be operating in ways that
disregard the spirit of the requested, justified, and
approved reasons for which we obtained 5MHz privileges,
then it may be extremely difficult to ever get FCC
support for increased spectrum.

Regards,
Bonnie Crystal KQ6XA
http://hflink.com/5mhz
http://hflink.com/60meters

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