Monday, August 16, 2010

Part 97 of how many?

T1A03: Which part of the FCC rules contains the rules and regulations governing the Amateur Radio Service?

  1. Part 73
  2. Part 95
  3. Part 90
  4. Part 97

The correct answer is D–Part 97.

The FCC, as I mentioned in the previous post, regulates all nonfederal use of radio for communication in the United States. In the course of doing this it issues lots and lots of regulations. These are gathered together (along with selected regulations from certain other agencies) in Title 47 of the Code of Federal Regulations. For bureaucratic reasons, the regulations are divided into numbered "parts"; the FCC is allotted parts 0 through 199. The first twenty parts (0-19) are for administrative and general rules that apply to the FCC and its licensees generally. The remaining parts, 20 through 101, are rules for different types of licensed radio uses, or "services", as they are known in radio regulatory jargon.

The four answers the NCVEC offers for this question are therefore all rules for specific radio services. Part 73 contains the rules for the broadcast media services, including AM and FM radio, television, and the international broadcast service (shortwave). Part 90 contains all the rules for what is known as the "private land mobile" service; this rather large division includes business radio and public safety radio (such as police and fire services). Part 95 covers the "personal radio" services such as CB and GMRS. And, finally, Part 97, the correct answer, covers the amateur radio service. It's generally a good idea for hams to have a copy (at least in electronic form) of Part 97 simply because the FCC expects us to be aware of the rules of the service.

The astute reader will already have noticed that when I quote the questions in these posts, there is often an "authority" section at the bottom of the question (although not in this post, because the NCVEC didn't provide an authority for this question). These are references, provided by the NCVEC, to the portion of the FCC regulations that the question under discussion is testing. These references are hotlinked to the Government Printing Office's Electronic Code of Federal Regulations Service, which is updated daily and is therefore the most up-to-date and official source for these documents (even more so than the FCC itself). There are other sources for Part 97 out there, but if you use a source other than the GPO, please ensure that the source you use is up-to-date; the FCC has amended Part 97 twice already this year alone.

What does the FCC have to do with amateur radio?

T1A02: What agency regulates and enforces the rules for the Amateur Radio Service in the United States?

  1. FEMA
  2. The ITU
  3. The FCC
  4. Homeland Security

The correct answer is C–The FCC.

(Authority: 97.1)

This is another question that's in the question pool to ensure that aspiring licensees are educated about something that is very important to know: that amateur radio, in the United States, at least, is regulated by the Federal Communications Commission, or FCC, and not by any other entity.

The FCC has been charged since its creation in 1934 with the regulation of all uses of radio frequency energy for communication within the terrority of the United States, its coastal waters, and ships at sea sailing under the flag of the United States, except for use by instrumentalities of the federal government itself (over which the FCC has no jurisdiction). Amateur radio falls within this scope, and so amateur radio is regulated by, and the rules for amateur radio written and enforced by, the FCC. 

Two of the other three entities listed are other federal agencies that have no authority over radio: FEMA and Homeland Security. Hams have no specific duties, functions, or responsibilities with respect to either FEMA or Homeland Security. The third entity offered as a distractor is the ITU, or International Telecommunication Union. The ITU, unlike the others, is not a federal agency; it is instead an agency of the United Nations, formed originally in 1865 as the International Telegraph Union in 1865 by a multilateral treaty amongst 20 nations. The United States is a charter member of the ITU and, as a member nation, agrees to abide by the regulations the ITU sets forth regarding radio. However, while the FCC will only rarely write regulations that are inconsistent with those issued by the ITU, it remains the case that it's the FCC regulations, and not the ITU regulations, that apply to amateur radio in the United States. Which is just as well, because the FCC regulations anyone can get for free from the US Government Printing Office, while the ITU regulations are not available without the payment of a fee to the ITU, or more accurately the ITU's publisher.

The FCC isn't the only entity that a ham has to care about. Hams must also follow FAA regulations (when erecting towers over a certain height, as set forth in Part 17). Hams must also be aware of and follow certain regulations of the National Technology and Information Agency (NTIA), issued as part of the latter's authority to coordinate the use of radio by the federal government. Several amateur bands are shared with federal users (including the military) and amateurs must be aware of the NTIA's regulation of those shared bands and observe any restrictions placed by NTIA in the use of those bands. Finally, while FCC regulation preempts state and local regulation of radio with respect to radio frequency interference and radio frequency exposure safety, state and local authorities may still enforce "reasonable" regulations on antenna structures for the purpose of electrical and mechanical safety and other "legitimate" purposes.

In practice, the FCC governs with a relatively light hand. Amateur radio is a tiny tiny piece of the FCC's pie. Amateur radio licensing generates very little revenue for the FCC (as the licenses are free), and they put relatively limited resources into the amateur radio area. In general the FCC expects us to take care of ourselves. This is a mixed blessing: on one hand it means that the FCC isn't something we generally have to deal with much; on the other hand, when there is a problem, getting the FCC to act on it can be difficult. It's not clear to me that a heavier hand would be better for amateur radio, though, and the other alternative (no amateur radio at all) is clearly worse.

Who Is Amateur Radio For?

This is the first post in what is likely to be a long series that discuss the material on the Amateur Radio licensing examinations. Each post will typically focus on one question from the question pools; there are thousands of these questions so this will probably go on for some time. Some of this material will likely be repetitive with prior posts in this blog, but I will try to make it interesting nonetheless.

T1A01: For whom is the Amateur Radio Service intended?

  1. Persons who have messages to broadcast to the public
  2. Persons who need communications for the activities of their immediate family members, relatives and friends
  3. Persons who need two-way communications for personal reasons
  4. Persons who are interested in radio technique solely with a personal aim and without pecuniary interest

The correct answer is D–Persons who are interested in radio technique solely with a personal aim and without pecuniary interest.

(Authority: 97.3(a)(4))

This question's presence in the Technician pool acts to ensure that people who are setting out to become hams will understand both what amateur radio is and also what it is not. Amateur radio is not (as is widely believed, if you believe the random noise I hear on Twitter and Backtype) a means by which one can broadcast one's opinions to myriads of rapt listeners. Nor is it intended as a personal communication service (either with your friends and family, or as a general chat service); people looking to do that should consider whether one of the Personal Radio services, or even a cell phone, would better serve their needs. Amateur radio is intended to allow those who have an interest in radio for its own sake a means to explore and develop their interest. If you are hoping to accomplish something useful, and you're just considering using radio as a means to do that, amateur radio may not be what you're looking for. Especially if the thing you're hoping to accomplish involves making money for yourself or someone else: that's specifically prohibited.

As it happens, the foregoing notwithstanding, there's quite a lot of use of amateur frequencies for what amounts to the broadcasting of opinion (as anyone who has listened to 75 meter phone, or to far too many VHF repeaters, can attest), and it's certainly common to see amateur radio used for personal communication between family members, or for general chatting (the latter is often called "ragchewing"). It's just that these are not part of the principle purposes of the amateur radio service, and the FCC offers other services which are explicitly intended for these purposes.

Fundamentally, if you think the whole concept of flinging signals through the air and catching them halfway across the world (or just halfway down the street) is really awesome and want to play with this more, and are willing to take quite a bit of time to learn some pretty complicated stuff, then ham radio is for you. If you just want to talk to people halfway around the world (or, again, halfway down the street), well, may I suggest Twitter? It's a lot easier to get on Twitter than it is to get a ham radio license, after all, and you don't have to buy nearly as much equipment. Fundamentally, ham radio is a geek thing; if you don't have the knack, then it might well not be for you.

Friday, June 04, 2010

Electrocution may be hazardous to your health

The first group of new questions from the 2010 Technician pool I'm covering are from subelement T0, which covers safety issues.  The NCVEC has been increasing the amount of safety-related content on the tests in recent years, and the new pool contains 13 new questions in this subelement.  The first of these is T0A02: "How does current flowing through the body cause a health hazard?"  I would think that most people understand that being electrocuted is bad for them, and generally something to be avoided.  However, for whatever reason, the NCVEC has decided that it's at least somewhat important for new hams to be prepared to demonstrate that they understand just why electrocution is bad for you. 

There are three main ways that electric currents within the body are hazardous.  First, any current flowing through any medium which is not a perfect conductor (which is to say, anything whatsoever) generates heat (sometimes called Joule heating).  The body's internal resistance is modest, typically between 300 and 1000 ohms; however, the skin resistance can be much higher, in the 10,000 to 100,000 ohm range depending on conditions.  A current passing through the body will heat and eventually burn tissue, preferentially at points of higher resistance; this will lead initially to burns on the skin and then later (as the skin blisters and its resistance lowers), to burns deeper within the body.  Second, many functions of cells depend on electrical charges, and the moving about of charged ions, to accomplish the purpose of the cells; electrical currents passing through these cells will tend to disrupt these electrical functions.  At very low currents (1 milliamp or less) this manifests itself as a tingling sensation.  At higher currents it will manifest as pain.  Sufficiently high currents (50 to 70 milliamps) may cause the third major effect: involuntary muscle contractions.  At even higher currents, 500 milliamps or more, the muscle of the heart can be disrupted leading to heart fibrillation, cardiac arrest, and death.

This particular question appears in the pool with an "All of the above" option.  Any experienced test-taker knows that "all of the above" is often the correct answer to any question that has such an option, and this question is no exception to that rule.  In any case, what really matters is that hams must understand that electrical voltages, even relatively low ones, are potentially dangerous, and must take precautions to avoid finding out about these effects first-hand.

Thursday, June 03, 2010

New Technician Pool, coming soon to a VE team near you

The NCVEC announced a new Technician pool back in February; it's now June and that new pool goes into effect July 1.  I've been blogging about the old Technician pool (an activity which, of late, I have been kinda lax at), and I've decided to abandon that effort in favor of blogging about the new pool, on the grounds that that might be more useful.

The new pool has 396 questions, 5 more than the old one; there are 67 questions carried across unchanged, 142 carried across with some changes (either minor or, in some cases, major), and 187 questions that are entirely new.  182 questions were dropped.  I would say that this new pool is somewhat harder than the old one; the new pool has significantly more electronics on it as well as content related to ionospheric propagation and SSB and CW operations (reflecting the fact that all Technicians now get limited HF privileges, not just those few who pass a code test).  There's even a few basic antenna theory questions.  Overall I think this is a better pool, in that it will force candidates to learn more of what they should know as beginning amateur radio operators.

Future posts will discuss specific topics that are new or newly handled on the new pool.