50MHz Yagi Simulations by VE7BQH
See notes below for further details.
Simulations of single Yagis, 2-Yagi stacks and 4-Yagi arrays at 50.15 MHz
Download both 2m and 6m charts as an Excel file,
so you can highlight the data that you most want to see.
The text version below will eventually be phased out.
.......[Opt Stacking]........ .......[75% Stacking]......... 1 Ant Spacing 4 Ant 2E ant 2H ant Spacing 4 Ant 2E ant 2H ant TYPE OF L GAIN E H Gain Gain Gain E H Gain Gain Gain F/R Z VSWR ANTENNA (WL) (dBd) (M) (M) (dBd) (dBd) (dBd (M) (M) (dBd) (dBd) (dBd) (dB) (ohms) Band Width Cushcraft A50-3S 0.29 5.26 5.55 3.84 9.49 8.32 6.46 4.16 2.87 8.69 7.84 6.21 9.0 40.0 1.10:1 DK7ZB 3 28 ohm 0.31 5.74 5.64 3.82 10.00 8.76 7.05 4.23 2.86 9.32 8.34 6.90 10.9 28.6 1.11:1 DK7ZB 3 12.5 ohm 0.31 6.34 5.94 4.11 12.52 9.35 9.45 4.46 3.08 11.47 8.95 8.87 13.7 13.1 1.29:1 G0KSC 3LFA 0.32 6.32 5.87 4.03 12.53 9.34 9.47 4.40 3.02 11.42 8.91 8.88 13.6 49.0 1.15:1 M² 6M3 0.34 6.36 5.98 4.24 12.61 9.38 9.52 4.49 3.18 11.55 8.95 8.98 13.1 17.7 1.26:1 DK7ZB 4 28 ohm 0.36 6.26 5.84 4.06 11.88 9.27 9.39 4.38 3.04 11.36 8.83 8.82 13.5 28.6 1.02:1 YU7EF 4 0.39 6.62 5.94 4.23 12.74 9.62 9.68 4.58 3.17 11.68 9.17 9.15 15.5 50.0 1.05:1 DK7ZB 3 28 ohm 0.42 6.62 5.91 4.20 12.59 9.59 9.56 4.43 3.15 11.64 9.15 9.12 15.0 27.7 1.14:1 DK7ZB 4 12.5 ohm 0.48 7.60 6.54 4.99 13.72 10.59 10.67 4.91 3.74 12.52 10.10 10.05 13.7 11.1 1.39:1 Telrex 4 0.59 7.53 6.54 5.08 13.40 10.47 10.31 4.91 3.81 12.41 10.02 10.15 11.8 52.3 1.11:1 HyGain 4 VB-64DX 0.59 7.55 6.59 5.16 13.45 10.50 10.36 4.94 3.87 12.40 10.06 10.16 11.3 55.0 1.03:1 Cushcraft A50-5S 0.59 7.60 6.52 5.11 13.53 10.56 10.46 4.89 3.83 12.52 10.09 10.19 14.0 40.8 1.05:1 G0KSC 4LFA 0.59 7.72 6.41 4.87 13.70 10.68 10.66 4.81 3.65 12.62 10.22 10.18 18.8 50.0 1.10:1 DK7ZB 4 12.5 ohm 0.60 8.15 6.77 5.46 14.21 11.15 11.16 5.08 4.10 13.01 10.69 10.66 13.7 14.7 1.39:1 Directive 4 0.62 8.17 6.89 5.49 14.23 11.14 11.17 5.17 4.12 13.11 10.71 10.69 12.8 12.9 1.54:1 G4CQM 5 0.63 8.27 6.87 5.44 14.36 11.27 11.34 5.15 4.08 13.40 10.84 10.88 18.3 58.9 1.57:1 YU7EF 5C 0.69 7.99 6.52 5.08 13.97 10.96 10.91 4.89 3.81 12.84 10.50 10.47 16.8 50.1 1.03:1 DK7ZB 5 50 ohm 0.71 8.44 6.92 5.55 14.35 11.39 11.28 5.19 4.16 12.99 10.94 10.75 13.0 49.3 1.11:1 OZ3SW 4 (OZ6FRS) 0.73 7.79 6.43 4.97 13.49 10.71 10.43 4.82 3.73 12.67 10.32 10.30 15.0 31.7 1.10:1 G0kSC 5 4.4 LFA 0.73 8.47 6.88 5.48 14.55 11.45 11.53 5.16 4.11 13.49 11.01 11.02 21.5 49.9 1.08:1 DK7ZB 5 28 ohm 0.75 8.60 7.02 5.64 14.53 11.56 11.47 5.27 4.23 13.16 11.11 10.89 13.3 29.0 1.10:1 YU7EF 5A 0.75 8.59 6.97 5.64 14.51 11.54 11.12 5.23 4.23 13.07 10.91 10.84 12.9 49.4 1.06:1 N6CA 4 0.76 8.72 7.02 5.76 14.65 11.67 11.60 5.27 4.32 13.25 11.21 11.00 14.0 20.1 1.32:1 G0KSC 5 4.7m LFA 0.79 8.86 7.08 5.74 14.85 11.82 11.82 5.31 4.30 13.67 11.37 11.29 17.3 50.4 1.02:1 Telrex 5 0.80 8.88 7.24 5.98 14.82 11.83 11.78 5.43 4.49 13.39 11.37 11.09 13.0 20.3 1.28:1 M² 6M5 0.80 8.93 7.27 6.04 14.91 11.89 11.89 5.54 4.53 13.60 11.41 11.26 13.9 36.1 1.35:1 I0JXX 5 0.81 9.03 7.53 6.33 14.98 11.98 11.95 5.65 4.24 13.24 11.49 11.11 10.5 18.1 1.37:1 W5WVO CC A50-5S MOD 0.87 9.10 7.35 6.09 15.19 12.07 12.16 5.51 4.57 13.65 11.57 11.34 12.3 16.1 1.36:1 Directive 5 0.88 8.93 7.02 5.76 14.86 11.87 11.84 5.42 4.32 13.62 11.45 11.24 16.6 23.4 1.09:1 M² 6M5X 0.91 9.39 7.59 6.39 15.36 12.35 12.33 5.69 4.79 14.03 11.86 11.70 12.7 13.9 1.48:1 Create CL6DX 6el 0.94 8.94 7.02 5.72 14.80 11.86 11.78 5.27 4.29 13.36 11.36 11.14 14.8 47.8 1.05:1 BQH 5 0.94 9.45 7.72 6.54 15.40 12.40 12.35 5.79 4.91 13.90 11.91 11.60 14.8 13.5 1.27:1 BV 6 0.98 9.47 7.72 6.56 15.45 12.43 12.40 5.79 4.92 14.08 11.96 11.73 15.3 47.6 1.13:1 YU7EF 6 W1 0.99 9.41 7.59 6.41 15.37 12.37 12.32 5.69 4.81 13.85 11.87 11.58 14.9 50.8 1.02:1 Cushcraft A50-6S 1.00 8.75 6.92 5.64 14.52 11.66 11.49 5.19 4.23 13.08 11.18 10.90 13.9 38.6 1.02:1 DK7ZB 5 18 ohm 1.00 9.36 7.65 6.47 15.32 12.32 12.28 5.74 4.86 13.70 11.82 11.37 12.3 17.7 1.35:1 G4CQM 6 1.00 9.65 7.68 6.50 15.66 12.62 12.64 5.76 4.87 14.57 12.18 12.13 18.9 58.6 1.53:1 DK7ZB 5 12.5 ohm 1.00 9.53 7.68 6.52 15.50 12.49 12.46 5.76 4.89 13.95 11.99 11.64 14.0 13.8 1.39:1 M² 6M5XHG 1.03 9.87 8.05 6.95 15.86 12.84 12.81 6.04 5.21 14.44 12.35 12.05 17.6 11.0 1.58:1 *M² 6M5XHG 1.03 9.87 5.49 5.49 14.35 12.15 12.18 -.-- -.-- --.-- --.-- --.-- 17.6 11.0 1.58:1 WiMo ZX 6-6 1.04 9.30 7.75 6.59 15.32 12.28 12.29 5.81 4.94 14.28 11.86 11.80 15.9 21.4 1.07:1 IZ1MYT 6 1.09 9.90 7.95 6.82 15.89 12.87 12.85 5.96 5.12 14.44 12.37 12.09 17.2 53.3 1.20:1 YU7EF 6 1.15 9.67 7.62 6.43 15.67 12.63 12.65 5.72 4.82 14.42 12.16 12.04 20.5 48.6 1.11:1 G0KSC 6 6.8m LFA 1.15 9.72 7.47 6.25 15.69 12.67 12.68 5.60 4.68 14.54 12.21 12.15 26.1 50.3 1.06:1 K6STI 5 1.15 10.32 8.27 7.24 16.26 13.26 13.25 6.20 5.43 14.85 12.75 12.51 17.0 12.5 1.67:1 Create CL6DXX 7el 1.19 9.78 7.50 6.35 15.65 12.70 12.63 5.62 4.76 14.15 12.20 11.93 17.1 89.4 1.08:1 DK7ZB 6 50 ohm 1.19 9.96 7.85 6.73 15.63 12.88 12.80 5.89 5.04 14.36 12.49 12.10 16.9 45.8 1.20:1 DK7ZB 6 28 ohm 1.20 10.19 8.12 7.02 16.15 13.15 13.13 6.09 5.27 14.79 12.65 12.44 18.0 27.2 1.07:1 HyGain VB-66DX 1.21 8.97 7.35 6.04 14.45 11.80 11.37 5.51 4.53 13.01 11.37 10.98 13.5 48.4 1.04:1 W1JR 6 1.21 9.47 7.35 6.17 15.39 12.39 11.39 5.51 4.63 13.88 11.89 11.60 17.9 45.1 1.08:1 Tilton 7 1.22 9.99 7.75 6.82 15.90 12.98 12.88 5.84 5.12 14.33 12.39 12.11 17.4 27.0 1.20:1 N6CA 6 1.22 10.08 7.91 6.80 16.05 13.03 13.03 5.94 5.10 14.80 12.55 12.44 18.9 22.1 1.17:1 G0KSC 6 7.3m LFA 1.22 10.15 7.88 6.77 16.11 13.10 13.10 5.91 5.08 14.86 12.61 12.51 22.1 51.3 1.05:1 I0JXX 6 1.23 10.27 8.66 7.65 16.25 13.23 13.23 6.49 5.74 14.73 12.67 12.36 11.2 15.7 1.52:1 N1DPM 5 Hy-gain mod 1.28 9.75 7.47 6.29 15.50 12.62 12.55 5.60 4.72 14.14 12.15 11.93 14.1 15.4 1.44:1 DK7ZB 7 50 ohm 1.29 10.12 8.05 7.00 16.09 13.07 13.05 6.04 5.25 14.52 12.55 12.23 20.0 45.5 1.03:1 N1DPM 7 KLM mod 1.31 10.02 7.91 6.84 15.84 12.90 12.82 5.94 5.13 14.18 12.39 12.04 16.9 205.0 1.04:1 YU7EF 7X 1.33 10.02 7.78 6.68 15.88 12.94 12.86 5.84 5.01 14.32 12.41 12.16 17.4 51.5 1.02:1 M² 6M7 1.33 10.35 8.09 7.02 16.28 13.29 13.28 6.07 5.27 15.04 12.81 12.71 18.7 31.4 1.26:1 IZ1MYT 7 1.34 10.39 8.38 7.38 16.32 13.33 13.30 6.29 5.54 14.90 12.80 12.60 12.6 52.6 1.22:1 Mosley A507LS 1.42 7.60 6.73 5.43 13.21 10.70 10.48 5.03 4.07 12.71 10.41 11.49 13.4 41.8 1.07:1 YU7EF 7 1.49 10.58 8.20 7.18 16.49 13.51 13.48 6.15 5.39 15.01 12.99 12.76 19.0 49.8 1.03:1 G0KSC 7 8.9m LFA 1.49 10.70 8.27 7.24 16.66 13.65 13.66 6.20 5.43 15.54 13.19 13.15 24.9 49.4 1.08:1 Create CL6DXZ 8el 1.53 10.76 8.31 7.29 16.67 13.68 13.64 6.23 5.47 15.08 13.14 12.88 18.3 85.7 1.06:1 Directive 7 1.56 10.92 8.50 7.47 16.86 13.87 13.86 6.37 5.60 15.68 13.40 13.30 20.2 23.8 1.14:1 DK7ZB 7 28 ohm 1.56 10.88 8.58 7.59 16.85 13.83 13.83 6.43 5.69 15.48 13.33 13.14 20.9 27.7 1.15:1 M² 6M7JHV 1.56 10.86 8.42 7.41 16.78 13.79 13.78 6.32 5.56 15.43 13.30 13.13 20.8 30.1 1.32:1 I0JXX 7 1.57 11.38 9.42 8.54 17.37 14.34 14.38 7.07 6.40 16.03 13.80 13.64 13.5 30.2 2.00:1 K6STI 6 1.62 11.17 9.38 7.98 17.13 14.16 14.09 7.03 5.99 15.61 13.62 13.23 17.2 18.1 1.47:1 G0KSC 7 9.7m LFA 1.63 11.02 8.50 7.50 16.94 13.95 13.94 6.38 5.63 15.67 13.46 13.35 23.9 50.3 1:06:1 G0KSC 8 OWL 1.64 10.76 8.96 7.68 17.03 14.06 14.00 6.72 5.76 15.95 13.61 13.43 19.9 12.4 1.12:1 Cushcraft 617-6B 1.69 10.17 8.09 7.08 15.89 13.01 12.90 6.07 5.31 13.99 12.48 11.95 19.1 33.0 1.16:1 N1DPM 7 617-6B mod 1.69 10.94 8.34 7.35 16.85 13.87 13.86 6.26 6.51 15.59 13.38 13.29 23.9 20.7 1.26:1 YU7EF 8 1.88 11.29 8.70 7.75 17.20 14.21 14.20 6.53 5.81 15.85 13.70 13.58 21.9 49.0 1.11:1 K5GW 8 1.96 11.77 9.52 8.70 17.78 14.73 14.76 7.14 6.53 16.26 14.15 13.95 19.8 52.9 1.13:1 BQH 8 2.00 11.95 9.62 8.74 17.94 14.91 14.93 7.22 6.56 16.49 14.36 14.18 21.7 50.1 1.18:1 M² 6M2WLC 2.00 11.76 9.28 8.38 17.67 14.68 14.68 6.96 6.27 16.19 14.14 13.96 20.4 35.8 1.27:1 DK7ZB 8 2.05 11.83 9.33 8.46 17.75 14.76 14.76 7.00 6.34 16.29 14.21 14.03 23.0 27.1 1.16:1 K6STI 7 2.05 12.12 9.94 9.14 18.10 15.05 15.11 7.46 6.86 16.52 14.45 14.26 18.7 13.7 1.76:1 N6CA 8 2.07 11.95 9.52 8.66 17.89 14.88 14.91 7.14 6.49 16.53 14.36 14.23 20.0 21.5 1.20:1 G0KSC 8 12.49m LFA 2.09 11.92 9.33 8.42 17.84 14.86 14.85 7.00 6.32 16.61 14.37 14.28 24.8 49.9 1.12:1 YU7EF 9 2.16 11.84 9.14 8.27 17.74 14.75 14.76 6.85 6.20 16.44 14.25 14.16 21.0 48.9 1.08:1 M² 6M8GJ 2.18 12.12 9.68 8.42 17.98 15.05 14.99 7.26 6.32 16.48 14.50 14.27 18.3 16.4 1.15:1 ZL3NW 10 2.20 11.68 9.18 8.34 17.62 14.61 14.66 6.89 6.26 16.22 14.08 13.90 16.4 62.1 1.13:1 BQH 9 2.28 12.19 10.17 9.28 18.24 15.18 15.21 7.63 6.96 16.76 14.59 14.39 22.1 50.9 1.14:1 DK7ZB 9 2.34 12.26 9.94 9.09 18.25 15.22 15.24 7.46 6.82 16.80 14.66 14.50 21.0 28.3 1.10:1 Create CL613 13 el 2.51 12.54 10.17 9.42 18.53 15.60 15.52 7.63 7.07 16.92 14.86 14.73 20.6 90.2 1.06:1 M² 6M9KHW 2.51 12.72 10.53 9.73 18.72 15.68 15.71 7.90 7.30 17.33 15.12 15.01 20.5 20.7 1.21:1 K6STI 8 2.54 12.73 10.72 10.00 18.78 15.67 15.75 8.04 7.50 17.12 15.04 14.89 18.0 17.5 1.65:1 M² 6m25WLC 2.57 12.63 10.41 9.68 18.65 15.47 15.64 7.80 7.26 17.27 15.04 14.95 20.2 28.8 1.30:1 YU7EF 10 2.59 12.50 10.06 9.14 18.44 15.45 15.45 7.54 6.85 17.36 15.00 14.94 22.8 50.5 1.07:1 M² 6M11JKV 3.52 13.99 11.94 11.33 19.92 16.92 16.93 8.96 8.50 18.67 16.38 16.36 19.4 27.3 1.25:1 BVO 18 Rope Yagi 5.03 15.01 13.39 12.81 20.95 17.95 17.95 10.05 9.61 19.66 17.39 17.37 25.3 52.4 1.11:1 Notes: 1. All antennas are now calculated in Eznec5+ by by W7EL, Roy Lewallen. 2. All antennas are in free space and horizontally polarized. 3. One wavelength at 50.150 MHz is 5.98M or 19.62' 4. "E" represents the horizontal plane; "H" represents the vertical plane. 5. F/R is Front to Rear in dB over the rear 180 degrees of an antenna using either E or H plane. 6. Z ohms is the natural impedence of a single antenna in free space. 7. VSWR Bandwidth is based a single antenna over 50.00 - 50.300 MHz with a reference of 1.00:1 at 50.150 MHz 8. G/T is not included in this table as the ratio between cold sky and ground noise is small. ie 2400K cold sky versus 3000 - 4000K ground noise. Therefore, G/T does not produce useful results on this band. Very Low side lobes and F/R on this band produce no specific improvement in G/T based on pure sky noise and ground noise. Assuming reasonable side lobes, F/R and good VSWR bandwidth, Gain is the most critical parameter on 6M. 9. Antennas marked with a "*" have stacking dimensions recommended by the manufacturer or designer. 10. Force 12 antennas are not included as no data is available from the manufacturer. 11. Manufacturer/Designer Legend: BVO = Eagle/DJ9BV BQH = VE7BQH Cushcraft = Cushcraft Create = Create Directive = Directive (K1WHS) DK7ZB = DK7ZB G0KSC = G0KSC G4CQM = G4CQM HYGAIN = HYGAIN I0JXX = I0JXX IZ1MYT = IZ1MYT K5GW = Texas Towers/K5GW K6STI = K6STI M² = M² MOSLEY = MOSLEY N1DPM = N1DPM N6CA = N6CA OZ3SW = OZ3SW TELREX = TELREX TILTON = TILTON (ARRL Handbook) W5WVO MOD = W5WVO WIMO = WIMO YU7EF = YU7EF ZL3NW = ZL3NW Using this Chart: While Gain is very important on on this band, other factors like ease of matching and wet weather performance should be considered in the your decision making. Antennas with 50 ohm feed systems and good VSWR bandwidth (Q) may be the best choice depending on your location. Although there is no advantage to low sidelobe and F/R antennas based on sky noise and ground noise (G/T) these antennas may provide signifcant benefit if you have local man made noise that is in directions where low side lobe antennas provide additional suppression. Stacking is an issue on this band due to the large optimum spacings. While the longer antennas are very attractive because of there superior gain, if severly understacked, the gain advantage may be quickly lost. LIONEL H. EDWARDS VE7BQH ve7bqh@shaw.ca Issue 11 March 25,2010 Issue 1: Initial Issue Issue 2: Add Cushcraft 617-6B and M² 6M25WLC Issue 3: Add N1DPM 7 617-6b mod, N1DPM 7 KLM mod, N1DPM 5 Hy-gain mod Issue 4: Add G0KSC 6 6.8m LFA,G0KSC 6 7.3m LFA,G0KSC 7 9.7m LFA,G0KSC 7 8.9m LFA,G0KSC 8 12.49m LFA Issue 5: Add G4CQM 6, G0KSC 5 4.4m LFA, Add F/R column Issue 6: Add M² 6M3 Issue 7: Add M² 6M5XHG,IZ1MYT 6 Issue 8: Add G0KSC 8 OWL,IZ1MYT 7,G4CQM 5,Revised G4CQM 6 Issue 9: Add Create CL6DX,Create CL6DXX,Create CL613 Issue 10: Add G0KSC 3LFA,WiMo ZX 6-6,M² 6M5,Create CL6DXZ, Issue 11: Add G0KSC 4LFA,
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26 April 2010
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