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

[Antonio Viegas]

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

(c)2011 HFLINK. All rights reserved.

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