Knowledge

Pre-sunrise and post-sunset authorization

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For example, if the instrument of authorization states sunrise as being at 5:30am local standard time in April, the station does not require PSRA operation since sunrise time is prior to the 6:00am rule. When the clocks advance, this becomes 6:30am
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Between the first Sunday in April and the end of the month of April, Class D stations will be permitted to conduct pre-sunrise operation beginning at 6 a.m. local time with a maximum power of 500 watts (not to exceed the station's regular daytime or
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At sunset, Class D stations must sign off if they do not possess a nighttime license. PSSA operation allows the station to remain on the air an additional two hours at reduced power level determined by several factors:
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On February 25, 1981, the FCC determined that there were no detrimental effects to clear-channel stations in remote areas, therefore, they permitted even more stations to apply for authorization.
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As of 2007 (when the new US daylight saving times went into effect), the FCC instructed licensees to use the April advanced times when DST goes into effect in March.
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PSSA operation must cease at local sunset time for the closest co-channel Class A located west of the Class D station.
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Applications for PSRA and PSSA operation are no longer required. The licensee must merely notify the FCC.
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At 6:00am local time, stations may power up using the station's daytime antenna (if applicable).
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interference to clear channel stations, so only a handful of stations were permitted to apply.
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There are no specific provisions related to daylight saving time within PSSA operation.
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stations with service into the evening where they would otherwise be required to
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The first presunrise authorizations came from a proposed rulemaking in 1967 (
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using a power level higher than what would normally be permitted prior to
60: 258: 122:, special provisions must be made since the PSRA time is based on 223: 94:
The power level for both PSRA and PSSA service cannot exceed 500
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Class D stations west of a co-channel Class A do not qualify.
16:"PSRA" redirects here. For the United States federal law, see 95: 254:
FCC Radio and Television Rules 47 CFR Part 73 (Official)
222:, 8 FCC 2d 698 (1967)). There were major concerns of 150:. PSRA will permit the station to power up at 5:00am 265: 87:times are provided on the licensee's basic 126:. The exact wording of the rule states: 234: 220:Operation by Standard Broadcast Stations 266: 259:FCC Rules and Regulations (unofficial) 26:People's Socialist Republic of Albania 194: 118:Provided the locale participates in 98:. Power calculations are based on 13: 113: 14: 285: 242: 162:would reflect the advanced time. 154:time, since that would be 6:00am 71:, or in the latter case, provide 53:Federal Communications Commission 18:Postal Service Reform Act of 2022 1: 202: 187:Whether the station is on a 7: 89:instrument of authorization 10: 290: 213: 51:) are permission from the 15: 178:International boundaries 45:postsunset authorization 37:presunrise authorization 249:47 CFR 73.99 (Official) 168: 105: 24:from 1946 to 1992, see 183:Clear-channel stations 274:Broadcast engineering 235:Current authorization 120:daylight saving time 20:. For the form of 281: 189:Regional channel 289: 288: 284: 283: 282: 280: 279: 278: 264: 263: 245: 237: 216: 205: 197: 195:Daylight saving 171: 116: 114:Daylight saving 108: 57:broadcast in AM 33:AM broadcasting 29: 12: 11: 5: 287: 277: 276: 262: 261: 256: 251: 244: 243:External links 241: 236: 233: 215: 212: 204: 201: 196: 193: 192: 191: 185: 179: 170: 167: 143: 142: 141: 140: 136:critical hours 115: 112: 107: 104: 9: 6: 4: 3: 2: 286: 275: 272: 271: 269: 260: 257: 255: 252: 250: 247: 246: 240: 232: 231: 227: 225: 221: 211: 208: 200: 190: 186: 184: 180: 177: 176: 175: 166: 163: 161: 157: 156:advanced time 153: 149: 139: 137: 131: 130: 129: 128: 127: 125: 121: 111: 103: 101: 97: 92: 90: 86: 82: 78: 74: 70: 66: 62: 58: 54: 50: 46: 42: 38: 34: 27: 23: 19: 238: 228: 219: 217: 209: 206: 198: 172: 164: 159: 155: 151: 147: 144: 132: 123: 117: 109: 93: 48: 44: 40: 36: 30: 203:Exceptions 160:local time 148:local time 124:local time 102:stations. 100:co-channel 61:mediumwave 138:power)... 268:Category 181:Class A 152:standard 77:sign off 224:skywave 214:History 81:Sunrise 73:Class D 67:/after 65:sunrise 31:In USA 22:Albania 85:sunset 69:sunset 43:) and 96:watts 169:PSSA 158:and 106:PSRA 83:and 49:PSSA 41:PSRA 79:. 59:on 55:to 270:: 91:. 35:, 47:( 39:( 28:.

Index

Postal Service Reform Act of 2022
Albania
People's Socialist Republic of Albania
AM broadcasting
Federal Communications Commission
broadcast in AM
mediumwave
sunrise
sunset
Class D
sign off
Sunrise
sunset
instrument of authorization
watts
co-channel
daylight saving time
critical hours
Clear-channel stations
Regional channel
skywave

47 CFR 73.99 (Official)
FCC Radio and Television Rules 47 CFR Part 73 (Official)
FCC Rules and Regulations (unofficial)
Category
Broadcast engineering

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