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4.1.1) Calculate the dimensionless parameter k, function of the required transmitter height, h_t:

Image RemovedImage Added (Eq. 218)

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	T085
	T085

Table 85: Parameters a₀ to a₃, b₀ to b₇, c₀ to c₆ and d₀ to d₁

Frequency	100 MHz			600 MHz			2 000 MHz
pt %	50	10	1	50	10	1	50	10	1
a₀	0.0814	0.0814	0.0776	0.0946	0.0913	0.0870	0.0946	0.0941	0.0918
a₁	0.761	0.761	0.726	0.8849	0.8539	0.8141	0.8849	0.8805	0.8584
a₂	-30.444	-30.444	-29.028	-35.399	-34.160	-32.567	-35.399	-35.222	-34.337
a₃	90.226	90.226	90.226	92.778	92.778	92.778	94.493	94.493	94.493
b₀	33.6238	40.4554	45.577	51.6386	35.3453	36.8836	30.0051	25.0641	31.3878
b₁	10.8917	12.8206	14.6752	10.9877	15.7595	13.8843	15.4202	22.1011	15.6683
b₂	2.3311	2.2048	2.2333	2.2113	2.2252	2.3469	2.2978	2.3183	2.3941
b₃	0.4427	0.4761	0.5439	0.5384	0.5285	0.5246	0.4971	0.5636	0.5633
b₄	1.256E-7	7.788E-7	1.050E-6	4.323E-6	1.704E-7	5.169E-7	1.677E-7	3.126E-8	1.439E-7
b₅	1.775	1.68	1.65	1.52	1.76	1.69	1.762	1.86	1.77
b₆	49.39	41.78	38.02	49.52	49.06	46.5	55.21	54.39	49.18
b₇	103.01	94.3	91.77	97.28	98.93	101.59	101.89	101.39	100.39
c₀	5.4419	5.4877	4.7697	6.4701	5.8636	4.7453	6.9657	6.5809	6.0398
c₁	3.7364	2.4673	2.7487	2.9820	3.0122	2.9581	3.6532	3.547	2.5951
c₂	1.9457	1.7566	1.6797	1.7604	1.7335	1.9286	1.7658	1.7750	1.9153
c₃	1.845	1.9104	1.8793	1.7508	1.7452	1.7378	1.6268	1.7321	1.6542
c₄	415.91	510.08	343.24	198.33	216.91	247.68	114.39	219.54	186.67
c₅	0.1128	0.1622	0.2642	0.1432	0.1690	0.1842	0.1309	0.1704	0.1019
c₆	2.3538	2.1963	1.9549	2.2690	2.1985	2.0873	2.3286	2.1977	2.3954
d₀	10	5.5	3	5	5	8	8	8	8
d₁	-1	1	2	1.2	1.2	0	0	0	0

4.1.3) Calculate the unblended to maximum value field strength, E_u, at the distance, d, and transmitting height, h_t, as follows:

Image RemovedImage Added (Eq. 219)

where: Image RemovedImage Added

and: Image RemovedImage Added

where: Image RemovedImage Added

and: Image RemovedImage Added

4.1.4) Calculate the blended to the free space value of field strength, E_b, at the distance, d, and transmitting height, h_t, as follows:

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	T086
	T086

Table 86: Default clutter height in the ITU-R P1546-1 model (when clutter height option not activated)

Selected environment	Assumed height of local clutter, m
Rural	10
Sub-urban	10
Urban	20

If the receiving antenna height, h_r (m), is different from the assumed R value, as shown in Table 86 , a correction shall be added to the field strength taken from the curve.

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where J(n) is given by :

Image RemovedImage Added (Eq. 227)