47 CFR Subpart A
AM Broadcast Stations
February 16, 2021
§
73.1
Scope
§
73.14
AM broadcast definitions
§
73.21
Classes of AM broadcast channels and stations
§
73.23
AM broadcast station applications affected by international agreements
§
73.24
Broadcast facilities; showing required
§
73.25
Clear channels; Class A, Class B and Class D stations
§
73.26
Regional channels; Class B and Class D stations
§
73.27
Local channels; Class C stations
§
73.28
Assignment of stations to channels
§
73.29
Class C stations on regional channels
§
73.30
Petition for authorization of an allotment in the 1605-1705 kHz band
§
73.31
Rounding of nominal power specified on applications
§
73.33
Antenna systems; showing required
§
73.35
Calculation of improvement factors
§
73.37
Applications for broadcast facilities, showing required
§
73.44
AM transmission system emission limitations
§
73.45
AM antenna systems
§
73.49
AM transmission system fencing requirements
§
73.51
Determining operating power
§
73.53
Requirements for authorization of antenna monitors
§
73.54
Antenna resistance and reactance measurements
§
73.57
Remote reading antenna and common point ammeters
§
73.58
Indicating instruments
§
73.61
AM directional antenna field strength measurements
§
73.62
Directional antenna system operation and tolerances
§
73.68
Sampling systems for antenna monitors
§
73.69
Antenna monitors
§
73.72
Operating during the experimental period
§
73.88
Blanketing interference
§
73.99
Presunrise service authorization (PSRA) and postsunset service authorization (PSSA)
§
73.127
Use of multiplex transmission
§
73.128
AM stereophonic broadcasting
§
73.132
Territorial exclusivity
§
73.150
Directional antenna systems
§
73.151
Field strength measurements to establish performance of directional antennas
§
73.152
Modification of directional antenna data
§
73.153
Field strength measurements in support of applications or evidence at hearings
§
73.154
AM directional antenna partial proof of performance measurements
§
73.155
Directional antenna performance recertification
§
73.157
Antenna testing during daytime
§
73.158
Directional antenna monitoring points
§
73.160
Vertical plane radiation characteristics, f(θ)
§
73.182
Engineering standards of allocation
§
73.183
Groundwave signals
§
73.184
Groundwave field strength graphs
§
73.185
Computation of interfering signal
§
73.186
Establishment of effective field at one kilometer
§
73.187
Limitation on daytime radiation
§
73.189
Minimum antenna heights or field strength requirements
§
73.190
Engineering charts and related formulas
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