Part 2 - Amateur Radio Advanced and Technical Questions
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What are the different US amateur classes and
what can each of them do?
Technician
- has all amateur privileges above 50 MHz. Required is the 35-question Tech test. Technician may access
Novice HF bands by passing the 5 wpm Morse code test.
General - has all amateur privileges except those reserved
for Amateur Extras. Required are 5 wpm Morse code test, written Technician
and 35-question General test.
Amateur Extra
- has full privileges on all amateur bands. An Extra can become a
VE and give all amateur tests. Required are 5 wpm Morse code
test, written Technician, written General, and 50-question Extra test.
What
is the best way to learn Morse Code?
This is becoming an increasingly common question as many
"no-code" Technicians realize they can add more
privileges to their license if they learn Morse Code. The
following list of suggestions should be helpful in finding ways
to approach the effort.
• Listen to code at
a rate faster than you can copy.
• Participate in
Novice-Roundup and/or Field Day. Practice whenever you get the
chance!
• Avoid the
"deciphering" plateau around 5 WPM and and character
plateau at 10 WPM by listening to the fast Farnsworth-paced
"beat" of each letter and the "beat" of
common words. (See the question on Morse code speed for more
information on Farnsworth pacing.)
• Practice to
develop a "copy buffer" so you copy about 5 characters
behind. (This is not easy but it's how the higher speeds are
done.) * Practice both with headphones and "open-air"
copy as the code test may be in either format. (If you only
practice one, you may fumble on the other.)
• Most of all,
don't give up! Recognize when you reach plateaus and keep trying
until you break through them.
What is the standard for measuring Morse code
speed?
The word PARIS was chosen as the standard length for CW
code speed. Each dit counts for one count, each dash counts for
three counts, intra-character spacing is one count,
inter-character spacing is three counts and inter-word spacing is
seven counts, so the word PARIS is exactly 50 counts:
PPPPPPPPPPPPP AAAAA RRRRRRRRR IIIII SSSSSSSSS
. - - . . - . - . . . . . .
1 1 3 1 3 1 1 3 1 1 3 3 1 1 3 1 1 3 1 1 1 3 1 1 1 1 1 7 = 50
^ ^ ^
^Intra-character ^Inter-character Inter-word^
So 5 words-per-minute = 250 counts-per-minute / 50
counts-per-word or one count every 240 milliseconds. 13
words-per-minute is one count every ~92.3 milliseconds. This
method of sending code is sometimes called "Slow Code",
because at 5 wpm it sounds VERY SLOW.
The "Farnsworth" method is accomplished by sending the
dits and dashes and intra-character spacing at a higher speed,
then increasing the inter-character and inter-word spacing to
slow the sending speed down to the desired speed. For example, to
send at 5 wpm with 13 wpm characters in Farnsworth method, the
dits and intra-character spacing would be 92.3 milliseconds, the
dash would be 276.9 milliseconds, the inter-character spacing
would be 1.443 seconds and inter-word spacing would be 3.367
seconds.
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What
is the standard phonetic alphabet?
Though no standard phonetics are required on amateur
radio, good operating procedures include using the standard
phonetic alphabet to help communicate more clearly.
When first making contact with another Ham, it is a good idea to
say callsigns in phonetics to give the other side a better chance
of understanding them correctly.
You can check out the "The Nato Phonetic Alphabet" section of Ham-Shack.com.
I'm confused. What do all those abbreviations
mean???
You can check out the "Radio Terminology"
section of Ham-Shack.com.
What
do all those "tones" mean?
Sub-Audible Tone: A low tone that you're not supposed to
be able to hear. It's used as a "PL Tone." PL is
"Private Line", a trademark of Motorola for their
implementation of CTCSS (Continuous Tone Coded Squelch System).
Basically, the transmitter sends the signal with the Sub-Audible
tone and the receiver only opens when it hears signals with that tone. Signals without the proper tone are ignored. This
is useful for "closed" repeaters, or for repeaters on
the same frequency that have overlapping geographic areas. Tone
encode refers to the feature of providing the tone on transmit.
Tone decode refers to the feature of responding to the tone on
receive. Tone squelch refers to all of the above. DTMF refers to
Dual Tone Multi-Frequency, or "Touch Tone" which is a
trademark of AT&T. DTSS probably means Dual Tone Squelch
System and refers to the feature of providing a predefined
sequence of Touch Tone digits to open the repeater for transmit.
DTSS is an alternate method from CTCSS, which provides a way to
use a "closed" repeater even if your radio doesn't do
Sub-Audible Tones.
You can also check out the "CTCSS What And Why" section of Ham-Shack.com.
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Where can I learn more about Amateur Radio if I
live outside the US?
Write to the ARRL and ask. They can usually tell you how to get a license in your country.
If you know of any location where this information is available
electronically, whether by an e-mail server, anonymous FTP, or a
contact person, please mail it to us so we can include it here.
My apartment or housing complex
does not allow outdoor antennas, now what do I do?
First of all, don't despair. Many hams have similar
problems. Many books offer advice for the growing group of hams
that cannot put up antennas. Some options are:
• Install an
"invisible" antenna made of magnet wire.
• Disguise an
antenna as a flag pole.
• Install an
antenna in the attic.
• ASK the apartment
manager. You may find they will let you put up something as long
as it "is invisible" or "doesn't disturb your
neighbors" or "doesn't attract lightning".
• Operate primarily
from your car.
• If the
restriction is due to local ordinance, you may have relief via
PRB-1. Meet with the local government and seek an informal
compromise. It is possible to win in court...but it's expensive
and time consuming.
• If you are
restricted by "covenants" attached to the deed of your
home, your options are severely limited. Covenants are considered
to be private, voluntary contracts between individuals and are
outside of the intended application of PRB-1. In many cases, you
can petition the Homeowner's Association for an exception.
Sometimes you can win in court on the basis that other violations
of the covenants by others without action taken constitutes
abandonment of the agreement.
• For further
information, contact the General Counsel's office of the ARRL, 225
Main St, Newington, CT 06111.
I got TVI...HELP!!!
Here's some hints on Television interference, but this is
not a complete list. There are also books on the subject
available from ARRL.
• If cable TV is an
underground feed, look for central distribution
box. Check for a grounding rod.
• Try installing
torroids on the cable TV cable close to the TV, and maybe
torroids on the AC cord as well.
• VCRs are
notorious for RF leakers, try disconnecting the VCR.
• Check to see if
interference is better or worse when cable is disconnected and
you use rabbit ears instead. It could be the cable company's
problem!
• Calling the cable
company may get results, since they are also responsible for RF
leakage from their equipment. However, they are very often
obstinate. Good luck! Try some or all of these suggestions before
calling the cable company:
1. Log the interference, noting geographical location, frequency,
and characteristics.
2. Bring it to the cable company's attention in writing,
preferably addressed to "Chief Engineer", or
"Technical Staff".
3. Don't be accusatory, instead ask for assistance in resolving
the problem. Try to work it out with someone technically
knowledgeable.
4. Do mention your "licensed radio system", but try not
to be too specific about "ham" or "CB" unless
requested.
* Try moving the radio antenna further away from the TV sets.
Make sure the SWR is LOW.
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Did you know that you can get college credit for
being a ham?
It's true! You can receive up to 14 credits in
electronics and engineering thru placement tests for CLEP (College
Level Entrance Placement) exams and DANTES (Defense Activity for
Non-Traditional Educational Support) exams if you have an
Advanced or Extra class Amateur license. For more information,
ask your campus education office or (for DANTES) your military education office.
On what frequencies do JPL and GSFC retransmit
the shuttle audio?
Station VHF 10m 15m 20m 40m 80m Video
WA3NAN 147.45 28.650 21.395 14.295 7.185 3.860
W6VIO 224.04 21.280 14.282 7.165
K6MF 145.585 7.165 3.840
W5RRR 146.64 28.495 21.350 14.280 7.227 3.850
W6FXN (temporarily out of service - looking for new frequency)
KA9SZX 146.88 426.25
K4GCC 146.94
WA4VME 145.17
W6TRW 145.32
All frequencies are in MHz. Use FM on VHF, USB on 10-20m, LSB on
40-80m.
WA3NAN - NASA Goddard Space Flight Center (GSFC), Greenbelt, MD
W6VIO - NASA Jet Propulsion Laboratory (JPL), Pasadena, CA
K6MF - NASA Ames Research Center (ARC), Moffett Field, CA
W5RRR - NASA Johnson Space Center, Houston, TX
W6FXN - Los Angeles, CA
KA9SZX - Champaign-Urbana, IL
K4GCC - Titusville, FL (near or at Kennedy Space Center)
WA4VME - Melbourne, FL (near or at Kennedy Space Center)
W6TRW - TRW ARC, Redondo Beach, CA (shuttle audio may be
overridden by repeater usage)
Can I take my HT on an airplane and operate it
if I get the permission
of the captain?
Technically, maybe. But don't count on it. In general,
you can't use a radio or scanner on an airline (or charter)
*unless* the airline allows it and the pilot-in-command (PIC)
determines that it will not interfere with the instruments and
radios on that specific aircraft. Very few US airlines allow
passengers to use radios so be ready to disconnect the antenna when you ask. (Don't even ask to
transmit.) For reference (in the US) the pertinent portion of the
Federal Aviation Regulations (FARs) is Part 91, paragraph 91.21.
Due to airport security, you may have a little difficulty
carrying the HT (or any electronic equipment) onto the airplane.
Generally, you can appease the security guards, simply by showing
that the unit is operational and doesn't have a bomb inside. For
a radio, just turning it on and opening the squelch satisfies
them. Expect more difficulty during periods of increased
security.
On a private airplane, it is legal to operate an amateur radio if
you have the permission of the PIC. It is still possible for the
radio to interfere with the plane's navigation or communication
equipment, so be sure to ask first. Always obey the requests of
the PIC. He knows his airplane and radios better than you do.
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How do I modify my current Amateur
license?
To modify your license (change of address, change of
station location, change of name, renewal, or even change of
callsign), submit an FCC Form 610 to the FCC. Forms are available
from the FCC or ARRL or a local VE session or ham radio store. Do
NOT use a photocopy. Check off the appropriate boxes, fill in the
new/changed information, SIGN THE FORM, and attach a copy of your current license (or a brief
letter of explanation for its absence, ie, "my dog ate
it"). NOTE: If you check the box to change your callsign,
YOU WILL GET A NEW CALLSIGN, even if all you wanted was to supply
a new address; if you want to keep your callsign, DON'T CHECK
THAT BOX. Send the form to FCC, POB 1020, Gettysburg, PA 17326.
Turnaround time (for CURRENT licensees only) is about 2-4 weeks.
ANY ham can apply for a new callsign (this is different from the
past where you can only get a new callsign if you move or
upgrade). You can't specify WHICH ONE you want, a new one comes
from the same pool as new licensees for that class of license.
The callsign is based on your mailing address. For overseas
military and civilians, be sure to specify a station location that is within FCC jurisdiction.
New licenses are for 10-year terms. If you apply for renewal
before its expiration date, the expired license is valid for 60
days after expiration to allow for the new license to arrive. You
have up to 2 years after expiration (5 years for an old 5-year
license) to renew before re-examination is required (but you can't operate with an
expired license). You will lose your current callsign after 1
year after expiration if you don't renew.
I'm confused about XXX, should I
ask the FCC?
Whatever "XXX" is in this case, the
overwhelming ARRL and net opinion is a resounding
"NO!", at least not as a first step. Amateurs are
generally very law-abiding people and have historically written
the FCC asking for clarification on some operating practice or
another. This is a very dangerous practice, for several reasons.
Most amateur radio regulations (contained in Part 97) are
generally very loosely-worded, so as not to restrict
experimentation and new techniques. But asking the FCC for a
clarification will set in motion the process of
"clarifying" it for everyone (i.e. new rulemaking.)
Examples of such restrictive rulings include varying topics like
when Hams can help non-profit agencies or effectively forcing
packet BBS sysops to screen messages before forwarding them. They
were the result of well-intentioned questions by Hams that forced
the FCC to make a ruling where they previously allowed the
amateur radio community to police itself.
Under all circumstances, it is better to first read the rules
yourself. Then, if there's a problem, ask your national amateur
radio organization (such as the ARRL in the US) which can give
qualified advice about interpretation of FCC regulations.
Organizations like the ARRL also have the influence to ask the
FCC informally, without forcing a ruling.
Even if asking the FCC doesn't result in a restrictive ruling, it
is generally a good idea to not overburden an under-staffed and
under- funded government agency with a lot of correspondence. The
Amateur Radio Service has traditionally been a low-workload
"hands-off" service, and has enjoyed a wide latitude
from the FCC. Please don't ruin this image for your fellow amateurs.
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Is there any information on antique
radios?
Antique radio classifieds: ARC, PO Box 802-B6, Carlisle,
MA 01741 - old radios, TVs, ham equipment, 40s and 50s radios,
telegraph, books, etc.
Hallicrafter Service manuals: Ardco Electronics, PO Box 95, Dept
Q, Berwyn, IL 60402
Antique Wireless Association, Bruce Kelley, W2ICE, Route 3,
Holcomb, NY 14469 - sponsors the Wireless Museum.
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Where
can I buy vacuum tubes?
Antique Electronic Supply, Box 1810, Tempe, AZ
85281 (1-602-894-9503) Fair Radio Sales, Box 1105, Lima OH 45802
Fala Electronics, Box 1376-1 Milwaukee, WI 53201 Southern Radio Supply, 1909 Tulane Ave, New Orleans, LA 70112
(10504-524-2343)
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What do I need to get started in packet radio?
Packet radio is a digital form of communication using
radios. There are OTHER digital forms, as well, like CW, RTTY and
AMTOR. To use packet radio, you'll need a radio (2 meters and 70
centimeters are most popular), a box that converts radio signals
to digital signals that a computer can understand (called a TNC
or terminal node controller) and a computer or terminal. For some
computers or TNCs you may need special software as well. However,
most TNCs and computers get along quite well with just a terminal
emulator software package. Most personal computers can be
interfaced to use with packet radio. Since there are many
digipeaters, generally even an HT will work with packet radio.
For more information on packet radio, you might try TAPR (Tucson
Amateur Packet Radio), PO Box 12925, Tucson, AZ 85732
(602-749-9479).
You can also check out the "Packet Radio Explained" section of Ham-Shack.com.
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What do I need to get started in satellite
communications?
You can check out the section entitled "Finding the
Satellites" on the main page of Ham-Shack.com
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What is available to get started in ATV, SSTV
and WEFAX?
This is a large subject area in itself. Amateur
Television (ATV), Slow-scan TV (SSTV), and Weather FAX (WEFAX)
all deal with transmitted pictures. (ATV includes moving pictures
and audio just like your household TV.)
Equipment is available to interface to most common microcomputers
including PC clones, Amigas , Atari ST, and others. (At last check, we
didn't see Macintosh on the list.) There are also a handful of
publications on the subject.
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What are these contests I sometimes hear, and
how do I participate?
Dozens of contests are held each year, usually at
weekends, and can provide useful operating experience. They
typically last for 24 or 48 hrs, and are usually on SSB or CW
only (the Russian CQ-Mir contest is on both modes at the same
time). You can participate by making one QSO or several
thousands. In most contests you send a signal report
(traditionally 59 or 599) followed by a number that is different
for different contests - the most common one is a serial number
(so you send 599 001 for your first QSO, then 599 002 etc). The
exchange may, however, be your age (All Asian contests), your CQ
or ITU zone (CQWW and IARU contests, respectively), your state
(ARRL contests) or something else. Read "Contest
Corral" in QST for the rules for all major contests - the
more serious contester may wish to subscribe to the National
Contest Journal, or join the e-mail contest mailing group (write
to Trey, WN4KKN, at garlough@tgv.com). Knowing the rules can
prevent embarrassment - you will get a cool reception if you are
a W or VE and call a W/VE in the ARRL contests, since they can
only work non-W/VE stations. Otherwise, QSOs made in contests are
just as valid for DXCC (DX Century Club - more than 100
contacts), WAS (worked all states) and other awards as are
30-minute ragchews. Although not strictly a contest, the annual
Field Day provides very useful operating experience under less
than optimal conditions and is highly recommended for new
operators - check with your local club for their Field Day plans some weeks before the (late June) event.
"Ham-Shack.com", Copyright 1997- 2008 Jonathan and Sara Imberi All rights reserved.