Model DX-OCF Off-Center-Fed 7 Band Antenna
75/80, 40, 20, 17, 12, & 10 meters, NO TUNER REQUIRED!
Model DX-OCF Off-Center-Fed 7 Band Antenna
75/80, 40, 20, 17, 12, & 10 meters, NO TUNER REQUIRED!
Frequency - SWR Data
Alpha Delta Model DX-OCF Off-Center-Fed (OCF) Dipole 300 Watt antenna (3000 watt Model DX-OCF-HP may vary slightly)
Center height 32 feet, end height 8 feet
Erected as an inverted "V". 125 degree element spread.
Length approximately 135 feet.
Fed with 100 feet of RG213.
Full 135 foot antenna. Convertible 68 foot section NOT removed.
| Frequency, SWR, RL, Z, X, R, Phase Angle 80 meters 3500, 1.020, -40.09, 53.20, 0.000, 53.20, 0.000 3550, 1.040, -34.15, 51.80, 0.000, 51.80, 0.000 3600, 1.040, -34.15, 46.50, 0.000, 46.50, 0.000 3650, 1.170, -22.12, 45.47, -5.800, 45.10, -7.329 3700, 1.380, -15.94, 53.61, 17.70, 50.60, 19.28 3750, 1.570, -13.08, 64.60, 25.40, 59.40, 23.15 3800, 1.740, -11.37, 76.05, 29.00, 70.30, 22.42 3850, 1.890, -10.23, 88.29, 28.10, 83.70, 18.56 3900, 1.980, -9.660, 96.37, 17.30, 94.80, 10.34 3950, 1.970, -9.720, 95.65, -14.80, 94.50, -8.902 4000, 1.920, -10.03, 90.98, -23.10, 88.00, -14.71 |
| 40 Meters 7000, 1.200, -20.83, 45.49, 7.900, 44.80, 10.00 7050, 1.330, -16.98, 51.61, 13.90, 49.70, 15.63 7100, 1.470, -14.41, 58.62, 20.00, 55.10, 19.95 7150, 1.620, -12.52, 66.69, 24.30, 62.10, 21.37 7200, 1.800, -10.88, 76.82, 29.10, 71.10, 22.26 7250, 2.000, -9.542, 88.34, 32.10, 82.30, 21.31 7300, 2.200, -8.519, 100.9, 32.30, 95.60, 18.67 7350, 2.400, -7.707, 115.4, 26.90, 112.2, 13.48 |
| 30 meters - DO NOT USE! 10100, 7.750, -2.254, 331.1, -169.9, 284.2, -30.87 10150, 7.620, -2.293, 273.4, -187.2, 199.3, -43.21 |
| 20 meters 14000, 1.420, -15.21, 34.20, 0.000, 34.20, 0.000 14050, 1.360, -16.33, 36.20, 0.000, 36.20, 0.000 14100, 1.300, -17.69, 38.40, 0.000, 38.40, 0.000 14150, 1.230, -19.73, 40.90, 0.000, 40.90, 0.000 14200, 1.180, -21.66, 43.60, 2.900, 43.50, 3.814 14250, 1.150, -23.13, 46.19, 4.200, 46.00, 5.217 14300, 1.120, -24.94, 47.89, 4.300, 47.70, 5.151 14350, 1.100, -26.44, 50.49, 5.400, 50.20, 6.140 |
| 17 meters 18050, 1.300, -17.69, 60.79, 10.90, 59.80, 10.33 18100, 1.380, -15.94, 60.10, -16.10, 57.90, -15.54 18150, 1.470, -14.41, 58.08, -19.80, 54.60, -19.93 18200, 1.560, -13.20, 54.79, -22.40, 50.00, -24.13 |
| 15 meters - DO NOT USE! 21000, 3.840, -4.631, 23.91, -18.70, 14.90, -51.46 21050, 3.900, -4.556, 20.66, -15.20, 14.00, -47.36 21100, 3.990, -4.449, 17.77, -11.90, 13.20, -42.04 21150, 4.090, -4.335, 15.17, -8.600, 12.50, -34.53 21200, 4.170, -4.249, 13.29, -5.500, 12.10, -24.45 21250, 4.250, -4.166, 11.70, 0.000, 11.70, 0.000 21300, 4.300, -4.115, 10.60, 0.000, 10.60, 0.000 21350, 4.330, -4.086, 10.20, 0.000, 10.20, 0.000 21400, 4.340, -4.076, 10.10, 0.000, 10.10, 0.000 21450, 4.330, -4.086, 10.80, 0.000, 10.80, 0.000 |
| 12 meters 24850, 1.630, -12.41, 76.48, 16.40, 74.70, 12.38 24900, 1.570, -13.08, 75.69, -12.20, 74.70, -9.276 24950, 1.510, -13.84, 73.99, -10.80, 73.20, -8.394 25000, 1.450, -14.72, 71.70, -6.500, 71.40, -5.202 |
| 10 meters 28000, 1.020, -40.09, 49.20, 0.000, 49.20, 0.000 28050, 1.030, -36.61, 49.80, 0.000, 49.80, 0.000 28100, 1.020, -40.09, 50.60, 0.000, 50.60, 0.000 28150, 1.030, -36.61, 51.30, 0.000, 51.30, 0.000 28200, 1.030, -36.61, 52.10, 0.000, 52.10, 0.000 28250, 1.030, -36.61, 52.70, 0.000, 52.70, 0.000 28300, 1.030, -36.61, 53.30, 0.000, 53.30, 0.000 28350, 1.030, -36.61, 53.60, 0.000, 53.60, 0.000 28400, 1.030, -36.61, 53.70, 0.000, 53.70, 0.000 28450, 1.030, -36.61, 53.40, 0.000, 53.40, 0.000 28500, 1.030, -36.61, 52.90, 0.000, 52.90, 0.000 28550, 1.040, -34.15, 51.80, 0.000, 51.80, 0.000 28600, 1.040, -34.15, 50.40, 0.000, 50.40, 0.000 28650, 1.060, -30.71, 48.60, 0.000, 48.60, 0.000 28700, 1.080, -28.30, 46.70, 0.000, 46.70, 0.000 28750, 1.110, -25.66, 44.70, 0.000, 44.70, 0.000 28800, 1.140, -23.69, 42.50, 0.000, 42.50, 0.000 28850, 1.170, -22.12, 40.50, 0.000, 40.50, 0.000 28900, 1.220, -20.08, 38.50, 0.000, 38.50, 0.000 28950, 1.270, -18.49, 37.00, 0.000, 37.00, 0.000 29000, 1.320, -17.21, 35.70, 0.000, 35.70, 0.000 29050, 1.380, -15.94, 34.90, 0.000, 34.90, 0.000 29100, 1.440, -14.88, 34.50, 0.000, 34.50, 0.000 29150, 1.510, -13.84, 34.69, 6.900, 34.00, 11.47 29200, 1.570, -13.08, 35.48, 9.800, 34.10, 16.04 29250, 1.630, -12.41, 37.07, 13.30, 34.60, 21.03 29300, 1.690, -11.82, 38.78, 16.70, 35.00, 25.51 29350, 1.770, -11.12, 41.79, 20.70, 36.30, 29.70 29400, 1.830, -10.65, 45.08, 24.10, 38.10, 32.32 29450, 1.910, -10.10, 49.43, 28.20, 40.60, 34.79 29500, 1.980, -9.660, 54.79, 32.10, 44.40, 35.87 29550, 2.050, -9.262, 60.16, 36.00, 48.20, 36.76 29600, 2.130, -8.849, 66.14, 39.70, 52.90, 36.89 29650, 2.200, -8.519, 73.07, 43.10, 59.00, 36.15 29700, 2.280, -8.173, 80.56, 45.90, 66.20, 34.74 |
| 6 meters 50000, 1.510, -13.84, 30.60, 0.000, 30.60, 0.000 50050, 1.480, -14.26, 30.60, 0.000, 30.60, 0.000 50100, 1.470, -14.41, 30.70, 0.000, 30.70, 0.000 50150, 1.460, -14.56, 30.80, 0.000, 30.80, 0.000 50200, 1.450, -14.72, 31.00, 0.000, 31.00, 0.000 50250, 1.450, -14.72, 31.00, 0.000, 31.00, 0.000 50300, 1.450, -14.72, 30.90, 0.000, 30.90, 0.000 50350, 1.460, -14.56, 30.60, 0.000, 30.60, 0.000 50400, 1.480, -14.26, 30.30, 0.000, 30.30, 0.000 50450, 1.520, -13.71, 29.70, 0.000, 29.70, 0.000 50500, 1.550, -13.32, 29.10, 0.000, 29.10, 0.000 50550, 1.590, -12.85, 28.30, 0.000, 28.30, 0.000 50600, 1.650, -12.21, 27.60, 0.000, 27.60, 0.000 50650, 1.710, -11.63, 27.00, 0.000, 27.00, 0.000 50700, 1.770, -11.12, 26.70, 0.000, 26.70, 0.000 50750, 1.850, -10.51, 26.50, 0.000, 26.50, 0.000 50800, 1.930, -9.968, 26.58, 4.500, 26.20, 9.747 50850, 2.010, -9.485, 26.98, 8.200, 25.70, 17.70 50900, 2.090, -9.051, 27.89, 11.30, 25.50, 23.90 50950, 2.160, -8.705, 28.92, 14.00, 25.30, 28.96 51000, 2.260, -8.257, 30.68, 17.20, 25.40, 34.11 51050, 2.330, -7.972, 32.58, 19.90, 25.80, 37.65 51100, 2.400, -7.707, 34.87, 22.90, 26.30, 41.05 51150, 2.480, -7.426, 37.62, 26.20, 27.00, 44.1 6 meters - USE WITH CAUTION! 51200, 2.570, -7.135, 40.96, 29.70, 28.20, 46.49 51250, 2.650, -6.896, 44.55, 33.30, 29.60, 48.37 51300, 2.710, -6.728, 48.68, 37.20, 31.40, 49.84 51350, 2.840, -6.390, 51.63, 40.20, 32.40, 51.14 51400, 2.880, -6.293, 57.36, 44.90, 35.70, 51.52 51450, 2.960, -6.109, 62.24, 48.90, 38.50, 51.79 51500, 3.040, -5.935, 67.50, 53.00, 41.80, 51.74 51550, 3.120, -5.771, 73.64, 57.50, 46.00, 51.34 51600, 3.200, -5.617, 79.95, 61.90, 50.60, 50.74 51650, 3.260, -5.506, 87.12, 66.40, 56.40, 49.66 51700, 3.330, -5.383, 94.99, 71.00, 63.10, 48.38 51750, 3.390, -5.281, 104.4, 75.30, 72.30, 46.17 51800, 3.470, -5.152, 114.7, 78.60, 83.60, 43.24 51850, 3.520, -5.075, 126.2, 80.30, 97.30, 39.54 51900, 3.550, -5.029, 138.3, 79.60, 113.1, 35.14 51950, 3.590, -4.970, 150.9, 75.30, 130.8, 29.93 52000, 3.600, -4.956, 163.1, 63.20, 150.4, 22.79 52050, 3.660, -4.870, 167.9, 60.70, 156.5, 21.20 52100, 3.610, -4.941, 182.4, 0.000, 182.4, 0.000 52150, 3.580, -4.985, 183.7, 0.000, 183.7, 0.000 52200, 3.530, -5.060, 179.7, 0.000, 179.7, 0.000 52250, 3.470, -5.152, 169.8, -31.70, 166.8, -10.76 52300, 3.430, -5.216, 157.4, -56.70, 146.8, -21.12 52350, 3.370, -5.315, 143.9, -67.80, 126.9, -28.12 52400, 3.320, -5.400, 131.1, -72.80, 109.0, -33.74 52450, 3.270, -5.488, 119.0, -74.00, 93.20, -38.45 52500, 3.230, -5.561, 107.7, -72.50, 79.60, -42.33 52550, 3.190, -5.635, 97.65, -69.20, 68.90, -45.13 52600, 3.130, -5.751, 88.95, -65.30, 60.40, -47.24 52650, 3.080, -5.852, 81.35, -61.20, 53.60, -48.79 52700, 3.040, -5.935, 74.33, -57.00, 47.70, -50.08 52750, 3.010, -5.999, 67.51, -52.70, 42.20, -51.32 52800, 2.970, -6.086, 61.75, -48.60, 38.10, -51.91 52850, 2.950, -6.131, 56.31, -44.50, 34.50, -52.22 52900, 2.930, -6.177, 51.55, -40.80, 31.50, -52.33 52950, 2.910, -6.223, 46.65, -36.70, 28.80, -51.88 53000, 2.900, -6.246, 42.26, -33.00, 26.40, -51.34 53050, 2.900, -6.246, 38.05, -29.20, 24.40, -50.12 53100, 2.900, -6.246, 34.30, -25.80, 22.60, -48.79 |
Model DX-OCF 7 Band Antenna - 300 watts CW/SSB in designated bands, $199.95 ea. Plus $8.00 s/h in U.S.
Model DX-OCF-HP 7 Band Antenna - 3 kW CW/SSB in designated bands, Special Order Prepaid Only, $259.95 ea. Plus $12.00 s/h in U.S.
