Elettrosmog:ARPA docet!

Antenna-amateur-600x300Today we republish a document of 'ARPA, dated 2013, but always good to be disseminated to the people who know little about the amateur radio systems can understand that we are not a danger to their health.
It often happens that the Amateur Radio, just obtained authorization from the Ministry, install their antennas on the roof of the building and neighbors often call him directly or through an administrator because they care (It is especially impresses by the antennas size for bands HF). This article ARPA unravels all your questions. Remember you are not the size to create the damage, but many other factors of radiofrequency. It is much worse to your brain that you use your cell phone
every day with his power 2W that the amateur radio with its power 500W.

Source: http://etereblog.com/impatto-elettromagnetico-dei-radioamatori/

- Original Source ARPA -

The electromagnetic impact of Amateur Radio systems.

Following the requests and messages that come to us we felt it necessary to know more about the features of facilities amateur electromagnetic and what contribution they can give on the surrounding environment.

First, we can distinguish the amateur radio equipment, in 2 categories:

a) Gli “OM” (stands for Old Man, "Dear old friend"), ie those for the license must pass a State exam, with which to demonstrate to know the techniques and procedures necessary for the amateur radio transmission. Their "intercommunication" can only take place on certain frequency bands allocated internationally to the Amateur Service.
b) I “CB” (stands for Citizen Band, only users of the town band, around 27 MHz), who are allowed to use small power transceivers for local purposes and for which the State does not require technical knowledge or behavioral, just pay an annual fee.

I Radioamatori (OM), constitute a global reality recognized as "Service" and are the official justification of their existence in IT (International Telecommunications Union), which recognizes the Amateur Radio duly authorized, purposes of “intercomunicazione, technical research and experimental non-profit ".
The intercommunication with other radio amateurs in the world, requires the efficient use of its equipment, that do not provide high transmission power; In fact, on average, are irradiated one hundred Watt, approximately the same power as a light bulb.
It can happen, however, that Radio Amateurs experts with technical solutions that increase power, up to the limit permitted under current Italian law provides for a maximum of 500 Watt.

The transmission characteristics contemplate that the radio amateur can choose which of the frequency bands permits at that time the best reflection of radio waves by the ionosphere, concentrating with directive antennas its transmission power to send only in the direction of the corresponding.
Like all sources of electromagnetic waves, even those generated and radiated by radio amateurs must comply with the limits and constraints imposed by law. Initially, year 1998, with the Decree of the Ministry of the Environment No.. 381 and later with the Framework Law. 36 of 2001, and relative D.P.C.M. 8 July 2003 "Establishment of exposure limits, attention values ​​and quality objectives' to protect the population from exposure to electric fields, Magnetic and electromagnetic fields generated at frequencies between 100 kHz e 300 GHz.”, have been "normed" emissions even for amateur radio equipment; tale D.P.C.M. reiterates exposure limits already established by the time DM381/98.
Following this national legislation, the various regions of Italy, have enacted their own laws, within its powers. The situation is so diverse from region to region, as regards the rules for issuing authorizations for the installation of the equipment.

In Emilia Romagna the L.R. 30/2000 e ss.mm.ii, all’art. 2 "Scope", second subparagraph, recital: "The amateur radio equipment regulated by Presidential Decree 5 August 1966, n. 1214 shall be governed by appropriate regulations of the Region, in accordance with the provisions of the Ministerial Decree. 381 of 1998, within 120 days of the approval of this Act ".
However, that regulation, to date has not yet been issued.
Returning to the national level the entry into force in 2003 Part D.Lgs. n. 259 "Electronic Communications Code", expressly provides for a chapter devoted to amateur radio (Title III, Chapter VII-: RADIO and Annex 26), in which it is indicated that the general authorization for the installation and operation of amateur radio stations is issued Territorial Inspectorate of the Ministry in the territory, to which they must be sent the required statements / information by law and which are
have the powers in relation to these systems.

But amateur radio emissions pose a danger to the health of citizens?
They are comparable with emissions from other services, such as radio broadcasting, the television or cell phone ?

If we summarize the main operating conditions, we note that:

a- the amateur generally plays such "activity" as a hobby, and then devotes only a few hours a day, in which however most of the time is dedicated to listening and
so they are very short his "airtime".
b- The apparatus used SSB (Single Side Band) and telegraph imply that no radio-wave is radiated between a word and another, or between one character and the other telegraphic. I 100 – 300 Watts of which is said, are present only in the peak of the modulation or key down. In the pauses of speech, or between a word and the other no power is transmitted. For this reason,, calculating the power averaged over time and actually radiated over 6 minutes, as required by Italian law, will be very low or even non-assessable.
c- Using the directional antenna, most of the transmitted power is directed toward the ionosphere to exploit the reflection, only in the direction of amateur radio which you try to connect. The "cone" of concentrated energy is sufficiently narrow and the antenna high enough to ensure that the transmitted wave intercepts the soil and then populated areas at a distance such as to make the electric field therein measurable almost negligible.

As a result, HAM plants can not be equated with certain other types of electromagnetic sources such as base stations for telephony mobile or broadcasting facilities at the service of tele-radio broadcasting, characterized by continuous emissions over the 24 hours with power and certainly higher.

For these reasons it can be stated that the electromagnetic impact that these devices generate in the surrounding environment is considered negligible and therefore would not represent a source of electromagnetic risk.

 

 
 
 

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