Tables for all practical HF bands

Tables for all practical HF bands

Ø40 Metres

Ø30 Metres

In order to allow anyone to create the 2-element beams described in this article, I have created a list of tables with all the necessary calculations already done. You simply need to choose the band you wish to make the antenna for, and buy the materials.

In the tables, the following symbols are used:

D_freq = Design Frequency (in MHz)
E_dri= Length of the Driven Element (in metres)
E_dir= Length of the Director Element (in metres)
A_sp= Delta Arm spacing (in centimetres)
D_arm= Length of each Delta Arm (in centimetres)
B_len= Length of the Boom (in centimetres)
M_bal= Length of RG-58U cable to make the Matching Balun (in centimetres)

40 Metres

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
7.000	21.335	19.708	422.87	288.32	334.68	1518.49
7.050	21.184	19.568	419.87	286.28	332.30	1507.50
7.100	21.035	19.430	416.91	284.26	329.96	1497.10

30 Metres

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
10.100	14.787	13.659	293.08	199.83	293.95	1052.42
10.125	14.751	13.625	292.35	199.33	231.38	1049.82
10.150	14.714	13.592	291.63	198.84	230.81	1047.23

20 Metres

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
14.000	10.668	9.854	211.43	144.16	167.34	759.24
14.050	10.630	9.819	210.68	143.65	166.74	756.54
14.100	10.592	9.784	209.94	143.14	166.15	753.86
14.150	10.555	9.749	209.19	142.63	165.57	751.20
14.200	10.518	9.715	208.46	142.13	164.98	748.55
14.250	10.481	9.681	207.73	141.63	164.40	745.92
14.300	10.444	9.647	207.00	141.14	163.83	743.32
14.350	10.408	9.614	206.28	140.64	163.26	740.73

17 Metres

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
18.068	8.266	7.635	163.83	111.70	129.66	588.30
18.118	8.243	7.614	163.63	111.39	129.30	586.68
18.168	8.220	7.593	162.93	111.09	128.95	585.06

15 Metres

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
21.000	7.112	6.569	140.96	96.11	111.56	506.16
21.050	7.095	6.554	140.62	95.88	111.29	504.96
21.100	7.078	6.538	140.29	95.65	111.03	503.76
21.150	7.061	6.523	139.96	95.43	110.77	502.57
21.200	7.045	6.507	139.63	95.20	110.51	501.39
21.250	7.028	6.492	139.30	94.98	110.25	500.21
21.300	7.012	6.477	138.97	94.75	109.99	499.03
21.350	6.995	6.462	138.65	94.53	109.73	497.86

12 Metres

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
24.890	6.000	5.543	118.93	81.09	94.12	427.06
24.940	5.988	5.531	118.69	80.92	93.94	426.20
24.990	5.976	5.520	118.45	80.76	93.75	425.35

10 Metres (Low)

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
28.000	5.334	4.927	105.72	72.08	83.67	379.62
28.100	5.315	4.909	105.34	71.82	83.37	378.27
28.200	5.296	4.892	104.97	71.57	83.08	376.93
28.300	5.277	4.875	104.60	71.32	82.78	375.60
28.400	5.259	4.858	104.23	71.06	82.49	374.28
28.500	5.240	4.841	103.86	70.82	82.20	372.96
28.600	5.222	4.824	103.50	70.57	81.91	371.66
28.700	5.204	4.807	103.14	70.32	81.63	370.36
28.800	5.186	4.790	102.78	70.08	81.35	369.08
28.900	5.168	4.774	102.43	69.84	81.06	367.80

10 Metres (High)

D_freq	E_dri	E_dir	A_sp	D_arm	B_len	M_bal
29.000	5.150	4.757	102.07	69.59	80.78	366.53
29.100	5.132	4.741	101.72	69.36	80.51	365.27
29.200	5.115	4.724	101.37	69.12	80.23	364.02
29.300	5.097	4.708	101.03	68.88	79.96	362.78
29.400	5.080	4.692	100.68	68.65	79.69	361.54
29.500	5.063	4.676	100.34	68.42	79.42	360.32
29.600	5.046	4.661	100.00	68.18	79.15	359.10
29.700	5.029	4.645	99.67	67.95	78.88	357.89