TABLE OF AUTHORIZED EMISSIONS IN THE AMATEUR SERVICE Effective May 22, 1983 ** ---------------------------------------------------------------- Novice/Technician General/Advanced Extra A1 emission only A1 and F1 A1 and F1 3700 - 3750 3525 - 3775 3500 - 3775 7100 - 7150 7025 - 7150 7000 - 7150 21100 - 21200 10100 - 10109 10100 - 10109 28100 - 28200 10115 - 10150 10115 - 10150 14025 - 14150 14000 - 14150 21025 - 21250 21000 - 21250 28000 - 28500 28000 - 28500 NOTE: 250 watts max input in Novice subbands and 30 meters. --------------------------------------------------------------- General Advanced Extra A1, A3, A4, A5, F3, F4, F5 3890 - 4000 3800 - 4000 3775 - 4000 7225 - 7300 7150 - 7300 7150 - 7300 14225 - 14350 14175 - 14350 14150 - 14350 21350 - 21450 21270 - 21450 21250 - 21450 28500 - 29700 28500 - 29700 28500 - 29700 ---------------------------------------------------------------- 160 Meters (Illinois) A1 and A3 only KHz Day power Night power 1800 - 1900 1000 1000 1900 - 1925 500 100 1925 - 1975 100 25 1975 - 2000 500 100 ---------------------------------------------------------------- 6 and 2 Meters: General/Advanced/Extra 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 bandwidth of an F3 emission below 29 MHz shall not exceed that of an A3 emission. ---------------------------------------------------------------- .PA Š________________________________________________________________ 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 - 1630 RTTY 21.34 SSTV 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 ____________________________________________________________________ ** 20 meter phone expansion effective May 22, 1983 AMTOR effective Jan 22, 1983 ____________________________________________________________________  DIGITAL COMMUNICATIONS: (F1, 3.5-28 MHz)(A2, F1, F2 above 28 MHz)  BAUDOT: (International Alphabet #2) A2, F1, F2: Maximum frequency shift = 900 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.) 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 any digital communications are used, ID must be given by voice or CW, whichever is appropriate. .PA ŠFACSIMILIE 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. ---------------------------------------------------------------- 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 Š (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) .PA Š 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) ____________________________________________________________ The May 1983 issue of Popular Communications magazine lists the following HF frequencies for Space Shuttle related moni- toring: 2.622 NASA booster rocket recovery 3.385 NASA tracking 3.395 NASA tracking 5.190 NASA tracking vessels 5.810 NASA booster recovery vessels 6.708 NASA aircraft 6.896 NASA aircraft 6.983 NASA tracking 7.461 NASA aircraft 7.675 NASA Kennedy operations 7.765 NASA aircaft 10.780 USAF "Cape Radio" (primary) 11.205 NASA Pacific operations 11.407 NASA booster rcoket recovery 14.456 NASA tracking 20.186 NASA tracking (Ascension Island) 20.191 NASA tracking (Ascension Island) 20.390 USAF "Cape Radio" (secondary) Other VHF, UHF, and microwave frequencies are listed in this article on pages 38 and 39. ========================================================================== Bob Parnass, AT&T Bell Laboratories - ihnp4!ihuxf!parnass - (312)979-5414