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T\|n* \4 — I .uMiiiilt*. <br />T>po A 5 — Tofc\i'«on. <br />T« iv I il - SttMitv. iinmri%1iihted pure carrier. <br />T%|V I I - OiffiorAhiH tdr^rapliy. <br />T\|V 1- 2 - Audio Ocqucncy-tliifl lelcyraphy. <br />Type 1-3 - l-requcncy* or phasc*inodubied <br />iflepH^'nV* <br />Type I 4 - Km facsimile. <br />T\pe 15 - Km lcle%oion. <br />ij p^ F - rul*e emiiiioni. | <br />97.63 Indh'idual Frequency not Spec­ <br />ified. <br />Transmissions by an amateur station <br />niav be on any frequency witbin any <br />aut)iori7cd amateur band. Sideband fre­ <br />quencies resulting from keying or mod­ <br />ulating a carrier wave shall be confined <br />within the authorized amateur band. <br />97.6S Emission Limitations. <br />a) Type A0 emission, where not <br />specifically designated in the bands <br />listed in 97.61, may be used for sliort <br />periods of time when required for <br />authorized remote<ontrol purposes or <br />for experimental purposes. However, <br />these limitations do not apply where <br />type A0 emission is^ specifically de­ <br />signated. \ <br />b) Whenever code practice, in ac <br />cordance with 97.91(d), is conducted in <br />bands authorized for A3 emission, tone <br />modulation of the radiotelephone trans­ <br />mitter may be utilized when jntcr- <br />spersed with appropriate voice in­ <br />structions. <br />c) On frequencies below 29.0 MHz <br />and between 50.1 and 52.S MHz, the <br />bandwidth of an F3 emission (fre­ <br />quency or phase modulation) shall not <br />exceed that of an A3 emission having <br />the same audio characteristics; and the <br />purity and stability of emissions shall <br />comply with the requirements of 97.73. <br />d) On frequencies below 50 MHz, <br />the bandwidth of AS and F5 emiuions <br />shall not exceed that of an A3 single­ <br />sideband emission. <br />e) On frequencies between 50 MHz <br />and 225 MHz, singlesideband or <br />double-sideband AS emission may be <br />used and the bandwidth shall not ex­ <br />ceed that of an A3 single-sideband or <br />double-sideband signal respectively. The <br />bandwidth of FS emission shall not <br />exceed that of an A3 single-sideband <br />emission. <br />f) Below 225 MHz, A3 and AS <br />emissions may be used simultaneously <br />on the same carrier frequency provided <br />the total bandwidth does not exceed <br />that of an A3 double-sideband emission. <br />97.67 Maximum Authorized Power. <br />a) Except for power restrictions as <br />set forth in 97.61 and paragraph (d) <br />each amateur transmitter may be <br />operated with a power input not <br />exceeding one kilowatt to tiic plate <br />circuit of the final amplincr nage of <br />an amplifier oscillator iraiismiiter or <br />to the plate circuit of an oscillator <br />tiansmittcr. An amateur transmitter <br />operating with a power input ex­ <br />ceeding 900 watts to the plate circuit <br />shall provide means for accurately <br />measuring the plate power input to <br />tlic vacuum lube or tubes supplying <br />power to the antenna. <br />b) Notwithstanding the provisions <br />of paragraph (a) of this section, amateur <br />stations shall use the minimum amount <br />of transmitter power necessary to carry <br />out the desired coniinunications. <br />c) Within the limitations of par­ <br />agraphs (a) and (b) of this section, the <br />effective radiated power of a repeater <br />station shall not exceed that specified <br />for the antenna height above average <br />terrain in the table below.• • <br />d) In the frequency bands <br />3700-3750 kHz, 71007150 kllz <br />(7050*7075 kllz when the terrestrial <br />location of the station is not within <br />Region 2) 21,100-21,200 kHz and <br />28,100-28,200 kHz, the power input to <br />the transmitter fmal amplifying state <br />supplying radio frequency energy to the <br />antenna shall not exceed 250 watts, <br />exclusive of power for heating the cath <br />ode of a vacuum tube(s). <br />69 Radio Teleprinter Transmissions. <br />The following special conditions <br />shall be observed during the trans­ <br />mission of radio teleprinter signals on <br />authorized frequencies by amateur sta­ <br />tions: <br />a) A single-channel five-unit (start- <br />stop) teleprinter code shall be used <br />wh.^^.a shall correspond to the Inter­ <br />national Telegraphic Alphabet No. 2 <br />with respect to all letters and numerals <br />(including the slant sign or fraction bar) <br />but special signals mav »»e employed for <br />the remote coniiuk .j< ivceiving printers <br />or for other purposes, in *Tigures*’ <br />positions not utilized for numerals. In <br />general, this code shall conform as <br />nearly as possible to (he teleprinter code <br />or codes in common commercial usage <br />in the United States. <br />b) The normal transmitting speed of <br />the radio teleprinter signal keying equip­ <br />ment shall be adjusted as closely as <br />possible to one of the standard tele­ <br />printer speeds, namely, 60 (45 bauds). <br />67 (50 bauds). 75 (56.25 bauds) or 100 <br />(75 bauds) words per minute, and in <br />any event, within the range of ±5 words <br />per minute of the selected standard <br />speed. <br />c) Wlien frequency shift keying <br />(type FI emission) is utilized, the de­ <br />viation in frequency from the mark <br />signal to space signal, or from the space <br />signal to mark signal, shall be less than <br />900 hertz. <br />d) When audio frequency shift <br />keying (type A2 or type F2 emission) is <br />utilized, the highest fundamental mod­ <br />ulating audio frequency shall not exceed <br />3000 hertz, and the difference between <br />the modulating audio frequency for the <br />mark signal and that for the space signal <br />shall be less than 900 hertz. <br />7.71 Transmitter Power Supply. <br />The licensee of an amateur station <br />using frequencies below 144 MHz shall <br />use adequately filtered direct-current <br />plate power for the transmitting equip­ <br />ment to minimize modulation from this <br />source. <br />97.73 Purity of Emissions. <br />a) Tlie mean power of any spurious <br />emission or radiation from any amateur <br />transmitter or external radio frequency <br />power amplifier being operated with a <br />carrier frequency below 30 MHz sliall be <br />at least 40 decibels below tlie mean <br />power of the fundamental without ex­ <br />ceeding the power of 50 milliwatts. For <br />equipment of mean power less than S <br />watts, the attenuation shall be at least <br />30 decibels. <br />Authoriiad EHtctivt Radiated Power for Repeater Sutione <br />ANTENNA HEIGHT <br />ABOVE AVERAGE <br />TERRAIN <br />MAXIMUM EFFECTIVE RADIATED FOINER FOR <br />FREQUENCY BANDS ABOVE: <br />below 50 feet <br />50 to 99 feet <br />too to 499 fttt <br />52MHi <br />too warn <br />100 watts <br />50 watts <br />500 to 999 feet 25 svatts <br />above 1,000 feet 25 wain <br />* locludos frequencies above 222 MHi< <br />150 Chapter 10 <br />14BMHI*442 MHi UlSMHt <br />800 watts Paragraphs <br />(a) and (b) <br />400 watts Paragraphs <br />(a) ar>d (b) <br />400 watts 800 watts Paragranhs <br />(a) and (b) <br />200 warn 800 warn ParagrapKi <br />(a) and ib) <br />100 watts 400 watts ParagrapKt <br />(a) and tb) <br />.