BPR-3 — Application Procedures and Rules for FM Broadcasting Undertakings (figures and descriptions)

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Figure A1: Estimated field strength exceeded at 50% of the potential receiver locations for at least 50% of the time at a receiving antenna height of 9.1 m

 

Description of figure A1

This figure is a graphic showing a set of curves that gives in dBµV/m the estimated field strength exceeded at 50% of the potential receiver locations for at least 50% of the time for a receiving antenna height of 9.1 metres and a transmitter effective radiated power (ERP) of 1 kilowatt in the lower VHF band (channels 2 to 6 and FM). Each curve corresponds to a distance (between 1.5 km and 300 km). Each of these curves gives, for various heights above average terrain (HAATs), the corresponding estimated field strength at the given distance of the curve. The vertical axis is the estimated field strength and runs from −20 to +110 dBµV/m. The horizontal axis is the HAAT; its scale is logarithmic and runs from 30 metres to 1600 metres. There are 35 curves corresponding to the following distances (in kilometres): 1.5, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 220, 240, 260, 280 and 300.

The table below gives the estimated field strength values corresponding to various HAAT values for each of these curves.

Data for figure A1: Estimated field strength (in dB above 1 µV/m for 1 kW ERP) exceeded at 50% of the potential receiver locations for at least 50% of the time at a receiving antenna height of 9.1 m
Distance in km HAAT 30 m HAAT 40 m HAAT 50 m HAAT 60 m HAAT 70 m HAAT 80 m HAAT 90 m HAAT 100 m HAAT 150 m HAAT 200 m HAAT 300 m HAAT 400 m HAAT 500 m HAAT 600 m HAAT 700 m HAAT 800 m HAAT 900 m HAAT 1000 m HAAT 1600 m
1.5 km 93.00 95.50 97.65 99.00 99.80 100.40 100.80 101.10 102.00 102.40 102.80 102.90 103.00 103.00 103.00 103.00 103.00 103.00 103.00
2.0 km 87.80 90.30 92.35 93.90 95.10 95.90 96.55 97.00 98.40 99.10 99.80 100.10 100.25 100.35 100.40 100.45 100.50 100.60 100.70
3.0 km 80.80 83.20 85.25 86.90 88.15 89.20 90.00 90.70 93.15 94.60 95.80 96.35 96.60 96.70 96.75 96.80 96.90 96.95 97.15
4.0 km 75.70 78.25 80.30 81.95 83.30 84.40 85.35 86.15 89.10 90.90 92.60 93.40 93.85 94.00 94.10 94.20 94.30 94.30 94.30
5.0 km 72.00 74.30 76.30 78.00 79.50 80.60 81.60 82.50 85.80 87.80 90.00 91.00 91.50 91.70 91.80 91.90 91.95 92.00 92.15
6.0 km 69.00 71.00 73.00 74.70 76.20 77.40 78.50 79.40 82.85 85.00 87.50 88.80 89.50 89.90 90.10 90.30 90.40 90.50 90.70
7.0 km 66.35 68.40 70.40 72.10 73.55 74.75 75.80 76.80 80.25 82.60 85.40 86.90 87.65 88.15 88.50 88.70 88.85 89.00 89.40
8.0 km 64.00 66.20 68.20 69.85 71.25 72.45 73.50 74.45 78.00 80.30 83.60 85.25 86.10 86.70 87.10 87.40 87.60 87.80 88.15
9.0 km 62.00 64.20 66.20 67.80 69.20 70.35 71.45 72.45 75.85 78.30 81.60 83.40 84.50 85.20 85.70 86.10 86.40 86.60 87.15
10.0 km 60.00 62.40 64.35 66.00 67.35 68.50 69.60 70.50 74.00 76.45 79.85 81.80 83.00 83.80 84.35 84.80 85.15 85.40 86.25
15.0 km 53.00 55.30 57.25 58.95 60.30 61.50 62.50 63.40 67.00 69.55 73.00 75.35 77.20 78.60 79.60 80.35 80.90 81.25 82.50
20.0 km 48.00 50.10 52.10 53.75 55.20 56.30 57.30 58.30 61.80 64.40 67.90 70.35 72.35 73.90 75.20 76.15 76.85 77.40 79.65
30.0 km 40.50 42.75 44.75 46.50 47.90 49.00 50.05 51.00 54.50 57.00 60.60 63.25 65.35 67.10 68.60 69.70 70.60 71.50 75.30
40.0 km 35.00 37.20 39.10 40.60 42.00 43.10 44.20 45.15 48.70 51.20 54.90 57.50 59.75 61.80 63.50 64.70 65.75 66.65 70.50
50.0 km 30.10 32.30 34.20 35.80 37.25 38.40 39.40 40.30 43.80 46.35 49.95 52.70 55.20 57.30 59.00 60.35 61.50 62.45 66.00
60.0 km 26.60 28.30 29.75 31.10 32.40 33.50 34.50 35.40 39.00 41.65 45.20 48.10 50.90 53.00 54.60 55.95 57.05 57.95 61.60
70.0 km 23.30 24.60 25.90 27.10 28.20 29.20 30.20 31.10 34.60 37.10 40.90 44.00 46.90 48.90 50.40 51.70 52.80 53.70 57.50
80.0 km 20.35 21.40 22.50 23.50 24.50 25.45 26.35 27.25 30.50 32.90 36.65 39.75 42.80 44.85 46.45 47.75 48.80 49.75 53.50
90.0 km 17.75 18.50 19.30 20.00 20.80 21.55 22.30 23.05 26.20 28.60 32.30 35.30 38.35 40.55 42.25 43.60 44.70 45.65 49.35
100.0 km 15.50 16.00 16.60 17.20 17.85 18.45 19.00 19.60 22.40 24.70 28.30 31.20 34.30 36.65 38.50 39.90 41.00 41.90 45.30
110.0 km 13.35 13.90 14.45 14.95 15.45 15.95 16.45 16.95 19.25 21.30 24.65 27.35 30.50 33.00 34.95 36.45 37.50 38.40 42.00
120.0 km 11.40 11.90 12.30 12.75 13.20 13.65 14.10 14.55 16.50 18.20 21.25 24.05 27.05 29.55 31.40 32.80 33.85 34.75 38.35
130.0 km 9.50 9.90 10.30 10.70 11.10 11.50 11.95 12.35 14.00 15.40 18.30 21.15 23.95 26.30 28.05 29.40 30.40 31.20 35.00
140.0 km 7.70 8.15 8.55 8.95 9.30 9.70 10.10 10.45 11.95 13.30 15.75 18.50 21.00 23.10 24.85 26.10 27.10 27.95 31.80
150.0 km 5.90 6.40 6.80 7.20 7.55 7.90 8.25 8.60 10.00 11.25 13.50 16.00 18.30 20.20 21.80 23.00 24.00 24.90 29.00
160.0 km 4.10 4.60 5.10 5.50 5.90 6.25 6.60 6.90 8.20 9.50 11.60 13.60 15.60 17.40 18.90 20.00 21.00 22.00 26.20
170.0 km 2.50 3.00 3.50 3.90 4.30 4.65 5.00 5.30 6.60 7.70 9.70 11.70 13.40 15.00 16.30 17.50 18.60 19.60 23.90
180.0 km 1.00 1.50 2.00 2.40 2.75 3.10 3.40 3.70 4.90 5.95 7.90 9.65 11.25 12.75 14.00 15.15 16.20 17.20 21.50
190.0 km −0.50 −0.10 0.35 0.75 1.15 1.50 1.80 2.10 3.20 4.30 6.20 7.80 9.20 10.60 11.80 13.00 14.00 15.00 19.50
200.0 km −2.10 −1.60 −1.20 −0.75 −0.40 −0.05 0.30 0.60 1.80 2.80 4.50 6.00 7.35 8.60 9.75 10.80 11.85 12.80 17.35
210.0 km −3.50 −3.10 −2.70 −2.35 −2.00 −1.65 −1.35 −1.00 0.20 1.20 2.90 4.30 5.70 6.95 8.05 9.05 10.05 11.05 15.30
220.0 km −4.95 −4.60 −4.30 −3.95 −3.65 −3.30 −3.00 −2.65 −1.40 −0.35 1.40 2.80 4.20 5.35 6.40 7.45 8.45 9.45 13.65
230.0 km −6.40 −6.10 −5.75 −5.40 −5.10 −4.75 −4.45 −4.15 −2.85 −1.85 −0.15 1.30 2.55 3.75 4.80 5.85 6.85 7.80 12.25
240.0 km −7.80 −7.55 −7.20 −6.85 −6.50 −6.15 −5.80 −5.50 −4.20 −3.25 −1.60 −0.20 1.00 2.15 3.20 4.25 5.20 6.15 10.75
250.0 km −9.40 −9.00 −8.65 −8.30 −7.95 −7.60 −7.30 −7.00 −5.75 −4.75 −3.10 −1.75 −0.60 0.55 1.65 2.70 3.75 4.70 9.30
260.0 km −10.95 −10.55 −10.15 −9.75 −9.40 −9.10 −8.75 −8.45 −7.30 −6.30 −4.65 −3.30 −2.10 −0.90 0.20 1.25 2.25 3.25 7.75
270.0 km −12.35 −11.95 −11.60 −11.20 −10.85 −10.50 −10.25 −9.90 −8.80 −7.85 −6.15 −4.80 −3.60 −2.35 −1.25 −0.25 0.75 1.75 6.30
280.0 km −13.70 −13.30 −13.00 −12.65 −12.30 −11.95 −11.65 −11.35 −10.25 −9.30 −7.70 −6.25 −5.00 −3.80 −2.70 −1.65 −0.70 0.25 4.90
290.0 km −15.10 −14.70 −14.35 −14.00 −13.65 −13.35 −13.10 −12.80 −11.65 −10.70 −9.15 −7.75 −6.50 −5.35 −4.25 −3.20 −2.25 −1.30 3.30
300.0 km −16.30 −16.00 −15.65 −15.30 −15.00 −14.70 −14.40 −14.10 −13.00 −12.00 −10.45 −9.15 −7.95 −6.80 −5.70 −4.70 −3.75 −2.85 1.70

At the right of the graphic, there is a scale for the conversion of the ERP from watts to dBs above 1 kW. The ERP in dBs above 1 kW is equal to 10 times the logarithm of the ERP in kW.

The table below shows the reference values from the scale.

Reference values from the scale
ERP Power in dB over 1 kW
1 W −30 dB
10 W −20 dB
100 W −10 dB
1 kW 0 dB
10 kW 10 dB
100 kW 20 dB
1 MW 30 dB
10 MW 40 dB
 

Figure A2: Estimated field strength exceeded at 50% of the potential receiver locations for at least 10% of the time at a receiving antenna height of 9.1 m

 

Description of figure A2

This figure is a graphic showing a set of curves that gives in dBµV/m the estimated field strength exceeded at 50% of the potential receiver locations for at least 10% of the time for a receiving antenna height of 9.1 metres and a transmitter effective radiated power (ERP) of 1 kilowatt in the lower VHF band (channels 2 to 6 and FM). Each curve corresponds to a distance (between 15 km and 500 km). Each of these curves gives, for various heights above average terrain (HAATs), the corresponding estimated field strength at the given distance of the curve. The vertical axis is the estimated field strength and runs from −40 to +90 dBµV/m. The horizontal axis is the HAAT; its scale is logarithmic and runs from 30 metres to 1600 metres. There are 35 curves corresponding to the following distances (in kilometres): 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 170, 180, 190, 200, 220, 240, 260, 280, 300, 320, 340, 360, 380, 400, 420, 440, 460, 480 and 500.

The table below gives the estimated field strength values corresponding to various HAAT values for each of these curves.

Data for figure A2: Estimated field strength (in dB above 1 µV/m for 1 kW ERP) exceeded at 50% of the potential receiver locations for at least 10% of the time at a receiving antenna height of 9.1 m
Distance in km HAAT 30 m HAAT 40 m HAAT 50 m HAAT 60 m HAAT 70 m HAAT 80 m HAAT 90 m HAAT 100 m HAAT 150 m HAAT 200 m HAAT 300 m HAAT 400 m HAAT 500 m HAAT 600 m HAAT 700 m HAAT 800 m HAAT 900 m HAAT 1000 m HAAT 1600 m
15 km 53.15 55.60 57.65 59.35 60.65 61.80 62.85 63.75 67.40 69.90 73.50 75.80 77.70 79.15 80.25 81.10 81.65 81.95 83.00
20 km 48.65 50.80 52.75 54.40 55.80 57.05 58.10 59.15 62.65 65.20 68.60 71.15 73.00 74.65 76.00 76.95 77.70 78.20 80.25
30 km 42.35 44.55 46.35 47.85 49.25 50.35 51.35 52.35 55.95 58.45 62.00 64.60 66.65 68.50 69.95 71.05 72.05 72.90 76.50
40 km 38.60 40.50 42.00 43.40 44.60 45.60 46.60 47.50 50.80 53.25 56.90 59.70 62.00 63.70 65.15 66.35 67.40 68.40 72.40
50 km 35.90 37.55 39.00 40.20 41.15 42.00 42.85 43.65 46.80 49.15 52.75 55.70 58.30 60.05 61.45 62.60 63.65 64.60 68.80
60 km 33.70 35.00 36.00 37.00 37.85 38.60 39.30 40.00 43.00 45.30 49.20 52.00 54.50 56.40 57.90 59.10 60.10 61.00 65.00
70 km 31.75 32.70 33.55 34.25 34.95 35.60 36.20 36.85 39.55 41.70 45.30 48.40 51.05 53.00 54.50 55.80 56.85 57.80 62.00
80 km 30.00 30.70 31.30 31.85 32.40 32.90 33.40 33.95 36.40 38.50 41.90 45.10 47.80 49.80 51.40 52.70 53.80 54.80 59.00
90 km 27.85 28.50 29.00 29.45 29.85 30.30 30.75 31.25 33.40 35.30 38.60 41.80 44.75 46.80 48.25 49.50 50.60 51.60 56.00
100 km 26.00 26.50 26.90 27.30 27.70 28.00 28.40 28.80 30.80 32.60 35.50 38.80 41.80 43.80 45.30 46.55 47.70 48.70 53.00
110 km 24.00 24.50 24.95 25.30 25.70 26.10 26.45 26.80 28.50 29.90 32.50 36.00 39.00 41.00 42.55 43.80 44.90 45.80 50.00
120 km 22.00 22.50 23.00 23.40 23.80 24.20 24.55 24.90 26.40 27.75 30.05 33.50 36.30 38.30 39.70 40.95 42.00 42.90 47.10
130 km 20.00 20.60 21.15 21.60 22.00 22.40 22.70 23.05 24.50 25.75 28.00 31.00 34.00 35.80 37.05 38.15 39.15 40.05 44.10
140 km 18.20 18.80 19.30 19.75 20.20 20.55 20.85 21.20 22.60 23.80 26.00 28.80 31.20 33.00 34.25 35.35 36.25 37.15 41.40
150 km 16.50 17.00 17.45 17.90 18.30 18.70 19.05 19.40 20.80 21.95 23.90 26.35 28.75 30.45 31.75 32.80 33.75 34.65 38.80
160 km 14.65 15.15 15.60 16.10 16.55 16.95 17.30 17.65 19.00 20.20 22.10 24.50 26.50 28.00 29.20 30.25 31.25 32.15 36.30
170 km 12.85 13.30 13.80 14.30 14.70 15.10 15.50 15.85 17.30 18.50 20.30 22.30 24.00 25.50 26.85 27.95 29.00 29.95 34.10
180 km 11.00 11.50 12.00 12.50 12.90 13.30 13.65 14.00 15.55 16.70 18.50 20.40 22.00 23.40 24.65 25.80 26.80 27.80 32.00
190 km 9.10 9.70 10.20 10.70 11.10 11.50 11.85 12.25 13.70 14.85 16.65 18.50 20.05 21.45 22.70 23.80 24.90 25.90 30.10
200 km 7.40 8.00 8.55 9.00 9.45 9.80 10.15 10.50 11.90 13.00 14.90 16.70 18.20 19.60 20.80 21.95 23.00 24.00 28.10
210 km 5.70 6.40 6.95 7.45 7.80 8.20 8.55 8.85 10.20 11.20 13.20 15.00 16.50 17.85 19.00 20.10 21.10 22.10 26.40
220 km 4.00 4.70 5.20 5.70 6.10 6.50 6.80 7.15 8.50 9.60 11.55 13.30 14.80 16.10 17.25 18.45 19.50 20.50 24.80
230 km 2.40 3.00 3.50 4.00 4.40 4.75 5.10 5.45 6.80 7.90 9.85 11.50 13.00 14.30 15.50 16.70 17.75 18.80 23.10
240 km 0.80 1.40 1.85 2.30 2.70 3.10 3.40 3.75 5.10 6.20 8.20 9.80 11.30 12.60 13.80 15.00 16.10 17.10 21.50
250 km −0.70 −0.20 0.25 0.70 1.10 1.50 1.80 2.10 3.50 4.50 6.50 8.20 9.70 11.00 12.20 13.40 14.50 15.50 19.90
260 km −2.30 −1.75 −1.35 −0.90 −0.50 −0.15 0.20 0.50 1.80 2.85 4.80 6.50 7.95 9.35 10.55 11.75 12.85 13.85 18.40
270 km −3.75 −3.25 −2.80 −2.40 −2.00 −1.65 −1.25 −1.00 0.15 1.15 3.00 4.70 6.10 7.50 8.80 10.00 11.10 12.10 16.80
280 km −5.10 −4.70 −4.25 −3.85 −3.50 −3.15 −2.80 −2.50 −1.40 −0.35 1.40 3.00 4.40 5.80 7.10 8.30 9.40 10.45 15.10
290 km −6.50 −6.10 −5.65 −5.25 −4.85 −4.55 −4.25 −4.00 −2.85 −1.90 −0.20 1.20 2.80 4.20 5.50 6.70 7.75 8.80 13.40
300 km −7.90 −7.45 −7.00 −6.60 −6.30 −6.00 −5.70 −5.40 −4.25 −3.40 −1.70 −0.20 1.20 2.60 3.80 4.95 6.00 7.00 11.60
310 km −9.00 −8.65 −8.25 −7.90 −7.60 −7.30 −7.00 −6.75 −5.70 −4.90 −3.20 −1.70 −0.30 1.00 2.20 3.35 4.40 5.40 10.10
320 km −10.20 −9.80 −9.50 −9.15 −8.85 −8.55 −8.30 −8.05 −7.05 −6.15 −4.70 −3.30 −1.90 −0.55 0.65 1.80 2.85 3.85 8.30
330 km −11.40 −11.10 −10.75 −10.45 −10.15 −9.90 −9.65 −9.40 −8.40 −7.60 −6.00 −4.70 −3.30 −2.00 −0.80 0.30 1.30 2.30 6.80
340 km −12.70 −12.40 −12.00 −11.70 −11.40 −11.15 −10.90 −10.70 −9.75 −8.90 −7.30 −6.00 −4.70 −3.50 −2.30 −1.15 −0.15 0.80 5.20
350 km −13.90 −13.60 −13.25 −12.90 −12.65 −12.40 −12.15 −11.90 −11.00 −10.15 −8.60 −7.35 −6.05 −4.80 −3.70 −2.60 −1.60 −0.60 3.80
360 km −15.20 −14.85 −14.50 −14.20 −13.90 −13.65 −13.40 −13.15 −12.20 −11.45 −9.90 −8.70 −7.40 −6.20 −5.00 −4.00 −3.10 −2.10 2.10
370 km −16.50 −16.05 −15.70 −15.40 −15.10 −14.90 −14.65 −14.40 −13.50 −12.70 −11.10 −9.90 −8.80 −7.60 −6.50 −5.50 −4.60 −3.65 0.40
380 km −17.75 −17.30 −16.90 −16.60 −16.30 −16.10 −15.85 −15.65 −14.80 −14.00 −12.40 −11.20 −10.10 −9.00 −8.00 −7.00 −6.10 −5.15 −1.00
390 km −19.00 −18.50 −18.10 −17.80 −17.50 −17.25 −17.05 −16.80 −16.00 −15.20 −13.70 −12.50 −11.40 −10.30 −9.40 −8.45 −7.50 −6.60 −2.50
400 km −20.10 −19.70 −19.30 −19.00 −18.70 −18.45 −18.20 −18.00 −17.20 −16.40 −14.90 −13.70 −12.60 −11.60 −10.65 −9.80 −8.90 −8.05 −3.90
410 km −21.25 −20.85 −20.50 −20.15 −19.90 −19.65 −19.40 −19.20 −18.40 −17.60 −16.10 −15.00 −13.90 −12.90 −12.00 −11.10 −10.30 −9.40 −5.15
420 km −22.50 −22.00 −21.65 −21.35 −21.10 −20.85 −20.65 −20.45 −19.60 −18.80 −17.20 −16.20 −15.20 −14.25 −13.30 −12.35 −11.55 −10.70 −6.60
430 km −23.70 −23.25 −22.90 −22.60 −22.35 −22.15 −21.90 −21.70 −20.70 −19.90 −18.40 −17.30 −16.35 −15.40 −14.50 −13.60 −12.75 −11.90 −7.90
440 km −24.95 −24.50 −24.10 −23.80 −23.55 −23.35 −23.10 −22.90 −21.90 −21.05 −19.60 −18.50 −17.50 −16.60 −15.70 −14.80 −13.90 −13.10 −9.15
450 km −26.00 −25.65 −25.30 −25.00 −24.75 −24.50 −24.25 −24.00 −23.05 −22.25 −20.85 −19.70 −18.70 −17.75 −16.85 −15.95 −15.10 −14.30 −10.40
460 km −27.10 −26.80 −26.50 −26.20 −25.90 −25.65 −25.40 −25.20 −24.20 −23.40 −22.00 −20.90 −19.85 −18.90 −18.00 −17.10 −16.30 −15.50 −11.70
470 km −28.35 −28.00 −27.70 −27.40 −27.10 −26.85 −26.60 −26.35 −25.30 −24.50 −23.05 −21.95 −20.95 −20.00 −19.15 −18.30 −17.50 −16.70 −12.90
480 km −29.70 −29.20 −28.90 −28.55 −28.25 −28.00 −27.75 −27.50 −26.40 −25.60 −24.15 −23.00 −22.00 −21.10 −20.25 −19.50 −18.70 −17.95 −14.10
490 km −30.80 −30.40 −30.10 −29.75 −29.45 −29.10 −28.85 −28.60 −27.50 −26.70 −25.30 −24.10 −23.15 −22.25 −21.40 −20.65 −19.90 −19.15 −15.40
500 km −31.90 −31.50 −31.20 −30.90 −30.60 −30.30 −30.00 −29.75 −28.70 −27.85 −26.50 −25.30 −24.30 −23.40 −22.60 −21.80 −21.05 −20.25 −16.60

At the right of the graphic, there is a scale for the conversion of the ERP from watts to dBs above 1 kW. The ERP in dBs above 1 kW is equal to 10 times the logarithm of the ERP in kW.

The table below shows the reference values from the scale.

Reference values from the scale
ERP Power in dB over 1 kW
1 W −30 dB
10 W −20 dB
100 W −10 dB
1 kW 0 dB
10 kW 10 dB
100 kW 20 dB
1 MW 30 dB
10 MW 40 dB
 

Figure C1: Elevation diagram of typical tower and transmitting antenna

 

Description of figure C1

This figure is an example of an elevation diagram of a typical tower and transmitting antenna. The tower is drawn as a vertical pole and the antenna is shown as a small vertical structure attached to the tower. The ground level is drawn as a horizontal line running at the base of the tower. The line representing the average elevation of terrain is drawn as a horizontal line slightly below ground level. Mean sea level is shown as a horizontal line at the bottom of the graphic, below the average elevation of terrain. Also, a horizontal line runs from the vertical centre of the antenna and is identified as the Radiating Centre.

There is a bidirectional arrow between the top of the tower and the line at ground level, indicating that the tower rises 300 metres above ground. Below, there is a bidirectional arrow between the line of the average elevation of terrain and the line at mean sea level, indicating there are 190 metres between the two.

A bidirectional arrow between the line at ground level and the line at mean sea level indicates that the mean sea level is 211 metres below ground level.

There is a bidirectional arrow between the roof of a building and the line at ground level. It is the height of the roof above ground, a height of 231 metres. In addition, there is a bidirectional arrow between the radiating centre of the antenna and the line at ground level, labelled as representing a distance of 277 metres.

There is a bidirectional arrow between the radiating centre of the antenna and the line of the average elevation of terrain, which indicates that the radiating centre is 298 metres above the average level of terrain.

There is a bidirectional arrow between the line marking the radiating centre of the antenna and the line at mean sea level, indicating that there are 488 metres between the two.

 

Figure D1: Parameters equivalent to an effective radiated power of 50 watts at a transmitting antenna height of 60 metres

 

Description of figure D1

This figure represents the parameters equivalent to an effective radiated power (ERP) of 50 watts at a transmitting antenna height of 60 metres. The vertical axis is the transmitting antenna height in metres and runs from 10 metres to 700 metres in a logarithmic scale. The horizontal axis is the ERP in watts; its scale is logarithmic and runs from 1 watt to 100 watts. Below the curve, the transmitting antenna height decreases and to the left of the curve the ERP also decreases.

The table below gives the data presented in the figure.

Data for figure D1: Parameters equivalent to an effective radiated power of 50 W at a transmitting antenna height of 60 m
Transmitting antenna height (in metres) Effective radiated power (in watts)
300 3
200 6
100 20
90 25
80 30
70 38
60 50
50 50
40 50
30 50
20 50
10 50
 

Figure D2: 0.5 millivolt per metre contour calculator

 

Description of figure D2

This figure is a graphic showing a set of curves that give the 0.5 mV/m contour. Each curve corresponds to a contour (between 1 km and 20 km). The vertical axis is the effective radiated power (ERP) in watts and runs from 50 to 0.001; its scale is logarithmic. The horizontal axis is the transmitting antenna height; its scale is logarithmic and runs from 30 metres to 300 metres. There are 12 curves corresponding to the following contours (in kilometres): 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15 and 20.

The table below gives the ERP values corresponding to various transmitting antenna height values for each of these curves.

Data for figure D2: 0.5 millivolt per metre contour calculator
(each data point is given in ERP watts)
Distance in km Height 30 m Height 40 m Height 50 m Height 60 m Height 70 m Height 80 m Height 90 m Height 100 m Height 150 m Height 200 m Height 250 m Height 300 m
1 km 0.0250 0.0160 0.0130 0.0110 0.0088 0.0083 0.0075 0.0069 0.0063 0.0057 0.0055 0.0055
2 km 0.4200 0.2300 0.1500 0.1000 0.0800 0.0600 0.0600 0.0500 0.0400 0.0300 0.0300 0.0300
3 km 2.0900 1.2000 0.7500 0.5100 0.3800 0.3000 0.2500 0.2100 0.1200 0.0900 0.0700 0.0700
4 km 6.7600 3.7600 2.3400 1.6000 1.1700 0.9100 0.7300 0.6100 0.3100 0.2000 0.1600 0.1400
5 km 15.8500 9.3300 5.8900 3.9800 2.8200 2.1900 1.7400 1.4100 0.6600 0.4200 0.3200 0.2500
6 km 31.6200 19.9500 12.5900 8.5100 6.0300 4.5700 3.5500 2.8800 1.3000 0.7900 0.5800 0.4500
7 km 58.2100 36.3100 22.9100 15.4900 11.0900 8.4100 6.6100 5.2500 2.3700 1.3800 0.9700 0.7200
8 km −  60.2600 38.0200 26.0000 18.8400 14.2900 11.2200 9.0200 3.9800 2.3400 1.5400 1.1000
9 km −  −  60.2600 41.6900 30.2000 23.1700 17.9900 14.2900 6.5300 3.7200 2.4500 1.7400
10 km −  −  −  63.1000 46.2400 35.4800 27.5400 22.3900 10.0000 5.6900 3.7000 2.6000
15 km −  −  −  −  −  −  −  −  50.1200 27.8600 17.9900 12.5900
20 km −  −  −  −  −  −  −  −  −  −  58.5300 40.7400
 

Figure D3: 3 millivolt per metre contour calculator

 

Description of figure D3

This figure is a graphic showing a set of curves that give the 3 mV/m contour. Each curve corresponds to a contour (between 1 km and 20 km). The vertical axis is the effective radiated power (ERP) in watts and runs from 50 to 0.001; its scale is logarithmic. The horizontal axis is the transmitting antenna height; its scale is logarithmic and runs from 30 metres to 300 metres. There are 9 curves corresponding to the following contours (in kilometres): 0.5, 1, 2, 3, 4, 5, 6, 7 and 8.

 

The table below gives the ERP values corresponding to various antenna transmitting height values for each of these curves.

Data for figure D3: 3 millivolt per metre contour calculator
(each data point is given in ERP watts)
Distance in km Height 30 m Height 40 m Height 50 m Height 60 m Height 70 m Height 80 m Height 90 m Height 100 m Height 150 m Height 200 m Height 250 m Height 300 m
0.5 km 0.0900 0.0750 0.0680 0.0660 0.0620 0.0580 0.0580 0.0570 0.0500 0.0500 0.0500 0.0500
1 km 0.8800 0.5800 0.4500 0.3800 0.3300 0.3000 0.2800 0.2600 0.2300 0.2200 0.2200 0.2200
2 km 14.9300 8.3900 5.2400 3.6600 2.7800 2.3100 1.9900 1.7900 1.3000 1.1100 1.0100 0.9400
3 km 74.8200 43.0500 26.8500 18.3700 13.7700 10.8100 8.9900 7.6600 4.3600 3.1200 2.6800 2.3700
4 km −  - - 57.4100 42.0700 32.6600 26.2400 21.8300 11.0700 7.3100 5.8900 4.9400
5 km - - - - - - - 50.5800 23.6600 14.9300 11.3000 8.9900
6 km - - - - - - - - 46.6700 28.4400 20.7200 16.0000
7 km - - - - - - - - - 49.4300 34.6700 25.9400
8 km - - - - - - - - - - 55.2600 39.2600
 

Figure F1: Interference zone

 

Description of figure F1

This figure shows how to calculate the interference zone as described in the example in annex F.

The protected station is a Class B station and is plotted on the left. Four field strength contours are plotted (54, 56, 58 and 60 dBµV/m).

The interfering station is a Class A station and is plotted on the right. Four interfering field strength contours from this station are plotted (34, 36, 38 and 40 dBµV/m).

Each contour from the protected station intersects the contour from the interfering station at two points (top and bottom), except for the 60 dBuV/m contour from the left and the 40 dBµV/m contour from the right which are tangent to each other.

The interference zone is shaded and drawn as follows:

  • The right boundary of the interference zone follows the 54 dBµV/m contour of the protected station between the two intersections of the 34 dBµV/m contour from the interfering station.
  • The left boundary follows the intersections on top and bottom of the 56 dBµV/m contour on the left with the 36 dBµV/m contour on the right then goes through the intersections of the 58 dBµV/m contour with the 38 dBµV/m contour.
  • The top and bottom boundaries of the interference zone finally join together at the tangent point of the 60 and 40 dBµV/m contours.
 

Figure G1:FM/channel 6 protection ratios (threshold of perceptible interference)

 

Description of figure G1

This figure provides the average protection ratios, FM to TV channel 6, in dB, for various FM channels and various levels of the TV signal. The vertical axis is the FM to channel 6 signal ratio (U/D) in dB and runs from -10 to 40. The horizontal axis is the FM channel number; it runs from 201 to 221. There are 8 curves corresponding to the following TV channel 6 received power levels (in dBm): -65, -60, -55, -50, -45, -35, -25 and -15.

The table below gives the U/D ratios presented in the figure.

Data for figure G1: FM/channel 6 (U/D) protection ratios (threshold of perceptible interference) (in dB)
FM channel TV Ch 6 −65 dBm TV Ch 6 −60 dBm TV Ch 6 −55 dBm TV Ch 6 −50 dBm TV Ch 6 −45 dBm TV Ch 6 −35 dBm TV Ch 6 −25 dBm TV Ch 6 −15 dBm
201 1 0 −1.2 −2.1 −3 −5.4 −6.5 −7.5
202 3.7 2.1 0.9 −0.1 −1.5 −3.5 −4.9 −6.1
203 6.9 5 3.2 1.9 0.1 −2.5 −3.8 −5.2
204 10.2 7.8 6.2 3.9 1.8 −1.8 −3.2 −5
205 13.8 11.1 8.5 5.9 3 −1 −2.5 −4.9
206 17.5 14 10.5 7.3 3.8 −0.5 −2.1 −4.8
207 21 16.8 12 8.5 4 −0.5 −2.5 −4.7
208 21.5 17.5 13 8.8 4 −0.4 −2.5 −4.7
209 21.8 17.8 13.5 8.8 4 −0.5 −2.5 −4.5
210 22 18.2 13.5 9 4 −0.5 −2.8 −4.5
211 22.5 18.5 14 9.5 4.2 −0.2 −2 −4
212 23.5 19 14.5 9.5 4.3 0.1 −2 −3.8
213 24 19.5 14.5 9.6 4.5 1 −1 −3.5
214 25 20.1 15 10 5 1.5 −0.1 −3.2
215 26.2 21 16 11 5.8 2.8 1.5 −1
216 27.5 22.8 17.5 12 7.5 4.5 2.5 0.8
217 30 25 19.2 14 9 6.5 4.5 2
218 32.5 28 22 17 12 8.5 7 4.5
219 36 30.5 24 19.5 14.8 12 9.8 7.5
220 39 33 26.5 22 18 14.5 12.5 10
 

Figure I1: IBOC spectrum with digital sideband configurations

 

Description of figure I1

This figure is a spectrum diagram of an in-band on-channel (IBOC) configured FM transmitter. The spectral components are specified in hertz displacement from the centre of the channel at 0 Hz. The spectrum requirements depend on the transmitter configuration mode with various digital sideband requirements for the upper and lower sidebands.

A summary of spectral requirements is as follows:

  • Analog FM from -101,744 Hz to +101,744 Hz

In addition to the analog FM bandwidth there are upper and lower sidebands for each mode as follows:

  • Primary service mode MP1, lower sideband from -198,402 to -129,361 Hz, upper sideband from +129,361 to +198,402 Hz, 10 primary main partitions
  • Extended service mode MP2, lower sideband from -198,402 to -122,457 Hz, upper sideband from +122,457 to +198,402 Hz, 10 primary main partitions plus one extended frequency partition
  • Extended service mode MP3, lower sideband from -198,402 to -115,553 Hz, upper sideband from +115,553 to +198,402 Hz, 10 primary main partitions plus two extended frequency partitions
  • Extended service mode MP11, lower sideband from -198,402 to -101,744 Hz, upper sideband from +101,744 to +198,402 Hz, 14 partitions, 10 primary main partitions plus four extended frequency partitions
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