rjr@mgweed.UUCP (Bob Roehrig) (10/30/85)
This list has not been updated for some time. If there are any errors or
suggestions, please let me know. I take no responsibility for errors!
Changes reflected in this issue include new modes on 160 meters and the
opening of the 12 meter band.
K9EUI
/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-/-
FREQUENCIES & EMISSIONS AUTHORIZED FOR U.S. AMATEURS 10-85
----------------------------------------------------------------
Novice/Technician General/Advanced Extra
A1 emission only A1 and F1 A1 and F1
1800 - 2000 1800 - 2000
3700 - 3750 3525 - 3750 3500 - 3750
7100 - 7150 7025 - 7150 7000 - 7150
21100 - 21200 10100 - 10150 10100 - 10150
28100 - 28200 14025 - 14150 14000 - 14150
21025 - 21200 21000 - 21200
24890 - 24930 24890 - 24930
28000 - 28300 28000 - 28300
NOTE: 200 watts PEP max output in Novice subbands and 30 meters,
otherwise 1500 watts PEP output allowed.
---------------------------------------------------------------
General Advanced Extra
A1, A3, A4, A5, F3, F4, F5
1800 - 2000 1800 - 2000 1800 - 2000
3850 - 4000 3775 - 4000 3750 - 4000
7225 - 7300 7150 - 7300 7150 - 7300
14225 - 14350 14175 - 14350 14150 - 14350
21300 - 21450 21225 - 21450 21200 - 21450
24930 - 24990 24930 - 24990 24930 - 24990
28300 - 29700 28300 - 29700 28300 - 29700
NOTE: The bandwidth of an F3 emission below 29 MHz shall not
exceed that of an A3 emission.
NOTE: Phone operation in Alaska and Hawaii permitted on
7075 - 7100 kHz after 9-1-84.
----------------------------------------------------------------
6 and 2 Meters:
50.0 - 50.1 A1 only
51.0 - 54.0 A0, A1, A2, A3, A4, A5, F1, F2, F3, F4, F5
50.1 - 54.0 A1, A2, A3, A4, A5, F1, F2, F3, F4, F5
144.0 - 144.1 A1 only
144.1 - 148.0 A0, A1, A2, A3, A4, A5, F0, F1, F2, F3, F4, F5
----------------------------------------------------------------
The "Considerate Operators Frequency Guide"
(Frequencies generally recognized for certain activities)
1800 - 1825 cw only 14.08 - 14.10 RTTY
1825 - 1830 dx window 14.23 SSTV
1850 - 1855 dx window 21.09 - 21.10 RTTY
3610 - 3630 RTTY 21.34 SSTV
24.92 - 24.93 RTTY
3637.5 AMTOR 28.09 - 28.10 RTTY
3845 SSTV 28.68 SSTV
7090 - 7100 RTTY 29.30 - 29.50 SATELLITES
7171 SSTV 29.52 - 29.58 RPTR inputs
10.14-10.15 RTTY 29.60 FM simplex
14.075 AMTOR 29.62 - 29.68 RPTR outputs
____________________________________________________________________
DIGITAL COMMUNICATIONS: (F1, 3.5-28 MHz)(A2, F1, F2 above 28 MHz)
BAUDOT: (International Alphabet #2)
A2, F1, F2: Maximum frequency shift = 1000 Hz.
A2, F2: Highest modulating frequency = 3000 Hz.
Maximum speed = 100 wpm (75 baud).
ASCII: Maximum baud rates:
3.5 - 28 MHz = 300 baud
28 - 50 MHz = 1200 baud
50 - 220 MHz = 19600 baud
220 - up = 56000 baud
AMTOR: TOR specifications are found in CCIR Rec. 476-2.
(100 baud, Block rep rate 2.222/sec.)
NOTE: Above 50 Mhz, the frequency shift in Hz shall not
exceed the sending speed, in baud, or 1000 Hz,
whichever is greater.
OTHER DIGITAL CODES: (ABOVE 50 MHZ ONLY):
Any other digital code may be used above 50 MHz
in the domestic U.S. (Except where A1 only is
permitted). A description of the code and modu-
lation technique must be kept in the log.
Bandwidth limitations:
50 - 220 MHz = 20 kHz max.
220 - 1215 MHz = 100 kHz max.
1215 and up = any Bw if in accordance with
97.63(b) and 97.73(c).
NOTE: When using digital communications, CW or phone ID
is no longer required after June 15, 1983. The ID
may be given using Baudot, ASCII, or AMTOR.
FACSIMILIE and TELEVISION:
Below 50 MHz the bandwidth of A4, A5, F4, F5 must not
exceed that of an A3 SSB signal.
50 to 225 MHz:
The bandwidth of A4 and A5 SSB emissions must not exceed
that of A3 SSB emissions.
The bandwidth of A4 and A5 DSB emissions must not exceed
that of A3 DSB emissions.
Type F4 and F5 emissions shall be limited to a peak
deviation of 5 KHz with a maximum modulating frequency
of 3 KHz. Alternatively, the bandwidth shall be no
greater than 20 KHz.
Below 225 MHz, type A4 and A3 or type A5 and A3
emissions are allowed simultaneously on the same
frequency if the bandwidth is no greater than type
A3 DSB.
Note: Fast Scan television transmissions may be
identified using "readily legible characters
when A5 emissions are used".
----------------------------------------------------------------
The present complete emission types are given in the format:
"Numeral, Letter, Numeral, Letter". The first numeral
indicates the bandwidth of the signal. This is often not
shown (and really should be for an accurate description).
The first letter shows the type of main carrier modulation.
The second numeral indicates the type of modulating signal
(voice, TV, CW, etc). The suffix letter, also not always
shown, basically indicates carrier and sideband type
information (full carrier or supressed, SSB or DSB etc).
The following list is not complete, does not show pulse
modes, and does not mean that all these can be used by the
amateur.
TYPE DESCRIPTION NOTE
(Amplitude Modulation)
A0 carrier - no modulation
A1 on-off telegraphy #1
A2 amplitude modulated telegraphy #1,2
A3 DSB (full carrier telephony)
A3A SSB (reduced carrier telephony)
A3B (2 independent sidebands -
reduced carrier) #3
A3J SSB (supressed carrier telephony)
A4 DSB facsimile
A4A SSB facsimile, reduced carrier
A4J SSB facsimile, supressed carrier
A5 DSB television
A5C VSB television #4
(Frequency modulation)
F0 carrier - no modulation
F1 frequency shift telegraphy #1
F2 frequency modulated telegraphy #1,2
F3 telephony
F4 facsimile
F5 television
---------------------Notes--------------------------
1. This is not restricted to Morse - may be RTTY, for example.
(RTTY could be run on 160 meters if on-off keying of the
carrier is used).
2. Examples of this mode are: 1) Carrier keyed on/off 2)
carrier on with the modulation keyed on/off 3) carrier on
with the modulation frequency shift keyed.
3. This is used by short wave broadcast station studio to
transmitter links with separate programs on each set of
sidebands.
4. VSB = Vestigial sideband where all of one set of sidebands
is transmitted but only about 20 percent of the other set of
sidebands is transmitted (the lowest frequencies).
_____________________________________________________________
Common Amateur emissions:
Double sideband voice = 6A3
Single sideband voice = 3A3J
VHF FM voice = 16F3
25 wpm Morse cw = .1A1
(assume max modulating freq of 3KHz and max deviation of 5KHz)
______________________________________________________________
Bandwidths are found with the following formulae:
A1 Bw = BK K=5 for fading circuits)
A2 Bw = BK+2M
A3 Bw = 2M
A3J Bw = M
A4 Bw = KN+2M (K=1.5)
F1 Bw = 2.6D+.55B (when 2D/B is less than 5.5)
Bw = 2.1D+1.9B (when 2D/B is greater than 5.5)
F3 Bw = 2M+2DK (K=1)
F4 Bw = KN+2M+2D (K=1.5)
WHERE:
Bw = necessary bandwidth in Hz
B = speed in bauds
C = subcarrier freq. in Hz
D = 1/2 the diff. between max and min instantaneous
freq (in other words, peak deviation).
K = fudge factor
M = maximum modulating freq. in Hz
N = maximum black & white elements per second
(N = drum circumference x lines per unit length
x drum rps)
____________________________________________________________
As a result of WARC 79, the very familiar signals of the emissions modes
will be changed. The FCC will be implementing the following new symbols
over the next several years.
Old Symbol New Symbol Old Symbol New Symbol
A0 N0N F0 N0N
A1 A1A F1 F1B
A2 A2A F2 F2A
A2D F2D
A2J J2A F3 F3E
J2D F4 F3C
A3 A3E F5 F3F
A3J J3E P P1B
A4 A3C
A5 C3F
A3F
Symbol Explanation:
First character indicates emission type
Second character indicates the nature of the signal
Third character indicates the type of information transmitted
First Character
N = Unmodulated carrier
A = Double sideband AM
J = Single sideband, suppressed carrier
F = Frequency modulation
P = Sequence of unmodulated pulses
C = Vestigial sidebands
Second Character
0 = No modulating signal
1 = Single channel containing digital information without the use
of a modulating subcarrier
2 = Same as above, except using a modulating subcarrier
3 = Single channel containing analog information
Third Character
N = No information transmitted
A = Telegraphy -- aural reception
B = Telegraphy -- automatic reception
C = Facsimile
D = Data transmission, telemetry, telecommand
E = Telephony
F = Television
Example: A1A is double sideband, single channel containing digital
information without the use of a modulating subcarrier, telegraphy
for aural reception. In other words, CW!