I did a HAAT for my sites where I would use this. The results Antenna elevation above sea level : 1096.27m Average ground elevation above sea level: 1216.56m ------------------------------------------------------------ HAAT: -120.28998046875m (5m antenna)
Antenna elevation above sea level : 1192.39m Average ground elevation above sea level: 1449.41m ------------------------------------------------------------ HAAT: -257.019985351563m (5m antenna) So, is the HAAT limit a positive one, or a absolute one? Doing the HAAT for client side are also all negative numbers but 100 meters less on average. I do not know if this means I could use 700ws or not, assuming there was free channels. On Fri, Sep 24, 2010 at 2:03 PM, Brian Webster <[email protected]> wrote: > Fred, > > Have you actually studied some locations that might be in > this situation and computed the HAAT using the tool on the FCC web site or > some other HAAT calculation tool? If you look at a calculation for a site > such as my office which is at 1420 above sea level and the valley floors > around me typically at around 1170 AMSL, my location still has a negative > HAAT of 47 meters even using a 10 meter antenna height! This is because > there are other hills around me that are at my elevation or taller out each > radial to 16km. I have pasted the text of a HAAT report from Radio Mobile so > you get an idea of how the calculations are run. I believe you said you are > in Western Mass. Your terrain is not much unlike my part of upstate NY. You > can paste my address in to Google Maps and turn the terrain feature on to > get an idea of the terrain around me. Unless your client is actually at the > top of the highest peak within 16 KM of itself, there is a high likelihood > that the HAAT will be within the limits and possibly at a negative number > > > > Brian > > > > 214 Eggleston Hill Rd. > > Cooperstown, NY 13326 > > > > Height Above Average Terrain > > Report generated at 4:57:42 PM , 9/24/2010 > > ------------------------------------------------------------ > > Antenna geographic coordinates > > 42°36'04"N,074°55'37"W > > FN22MO > > Ground elevation: 436.5m > > ------------------------------------------------------------ > > Antenna height above ground: 10m > > ------------------------------------------------------------ > > Azt(°) D(km) Ground elevation(m) > > 000 03.00 0508.1 > > 000 03.26 0529.2 > > 000 03.52 0548.8 > > 000 03.78 0569.6 > > 000 04.04 0581.2 > > 000 04.30 0590.4 > > 000 04.56 0590.8 > > 000 04.82 0606.3 > > 000 05.08 0590.9 > > 000 05.34 0547.3 > > 000 05.60 0513.9 > > 000 05.86 0482.1 > > 000 06.12 0447.3 > > 000 06.38 0408.5 > > 000 06.64 0405.3 > > 000 06.90 0389.6 > > 000 07.16 0388.0 > > 000 07.42 0398.1 > > 000 07.68 0406.3 > > 000 07.94 0424.9 > > 000 08.20 0447.0 > > 000 08.46 0443.0 > > 000 08.72 0393.4 > > 000 08.98 0369.4 > > 000 09.24 0371.1 > > 000 09.50 0377.5 > > 000 09.76 0375.8 > > 000 10.02 0365.6 > > 000 10.28 0363.9 > > 000 10.54 0377.0 > > 000 10.80 0377.0 > > 000 11.06 0375.2 > > 000 11.32 0372.7 > > 000 11.58 0363.9 > > 000 11.84 0362.0 > > 000 12.10 0364.4 > > 000 12.36 0376.9 > > 000 12.62 0379.1 > > 000 12.88 0373.0 > > 000 13.14 0370.7 > > 000 13.40 0378.3 > > 000 13.66 0380.6 > > 000 13.92 0394.0 > > 000 14.18 0388.5 > > 000 14.44 0423.8 > > 000 14.70 0440.4 > > 000 14.96 0431.8 > > 000 15.22 0429.5 > > 000 15.48 0431.9 > > 000 15.74 0430.2 > > 000 16.00 0432.9 > > 000 Average 433.08m > > 000 HAAT 13.42m > > 045 03.00 0451.4 > > 045 03.26 0420.8 > > 045 03.52 0397.6 > > 045 03.78 0370.2 > > 045 04.04 0368.5 > > 045 04.30 0363.9 > > 045 04.56 0365.0 > > 045 04.82 0361.4 > > 045 05.08 0360.0 > > 045 05.34 0367.0 > > 045 05.60 0378.3 > > 045 05.86 0379.8 > > 045 06.12 0387.5 > > 045 06.38 0428.0 > > 045 06.64 0438.8 > > 045 06.90 0408.4 > > 045 07.16 0430.0 > > 045 07.42 0434.8 > > 045 07.68 0474.9 > > 045 07.94 0514.4 > > 045 08.20 0519.7 > > 045 08.46 0523.5 > > 045 08.72 0498.6 > > 045 08.98 0464.7 > > 045 09.24 0492.5 > > 045 09.50 0516.1 > > 045 09.76 0541.8 > > 045 10.02 0533.7 > > 045 10.28 0525.6 > > 045 10.54 0537.8 > > 045 10.80 0555.9 > > 045 11.06 0566.9 > > 045 11.32 0586.8 > > 045 11.58 0588.2 > > 045 11.84 0575.1 > > 045 12.10 0580.7 > > 045 12.36 0585.8 > > 045 12.62 0597.1 > > 045 12.88 0601.9 > > 045 13.14 0588.7 > > 045 13.40 0600.3 > > 045 13.66 0632.1 > > 045 13.92 0639.5 > > 045 14.18 0590.7 > > 045 14.44 0575.5 > > 045 14.70 0561.4 > > 045 14.96 0543.4 > > 045 15.22 0575.8 > > 045 15.48 0592.8 > > 045 15.74 0556.4 > > 045 16.00 0536.3 > > 045 Average 499.73m > > 045 HAAT -53.23m > > 090 03.00 0566.1 > > 090 03.26 0581.7 > > 090 03.52 0560.7 > > 090 03.78 0552.0 > > 090 04.04 0582.2 > > 090 04.30 0626.1 > > 090 04.56 0639.3 > > 090 04.82 0629.2 > > 090 05.08 0659.9 > > 090 05.34 0685.0 > > 090 05.60 0635.6 > > 090 05.86 0588.6 > > 090 06.12 0558.4 > > 090 06.38 0554.8 > > 090 06.64 0586.4 > > 090 06.90 0556.3 > > 090 07.16 0492.4 > > 090 07.42 0474.1 > > 090 07.68 0496.9 > > 090 07.94 0507.5 > > 090 08.20 0457.9 > > 090 08.46 0412.6 > > 090 08.72 0406.6 > > 090 08.98 0430.8 > > 090 09.24 0472.3 > > 090 09.50 0585.2 > > 090 09.76 0649.9 > > 090 10.02 0639.7 > > 090 10.28 0665.6 > > 090 10.54 0696.1 > > 090 10.80 0619.2 > > 090 11.06 0586.4 > > 090 11.32 0591.5 > > 090 11.58 0541.9 > > 090 11.84 0495.6 > > 090 12.10 0493.0 > > 090 12.36 0532.2 > > 090 12.62 0558.3 > > 090 12.88 0551.5 > > 090 13.14 0553.0 > > 090 13.40 0573.6 > > 090 13.66 0535.2 > > 090 13.92 0477.9 > > 090 14.18 0429.9 > > 090 14.44 0418.5 > > 090 14.70 0462.3 > > 090 14.96 0485.2 > > 090 15.22 0492.4 > > 090 15.48 0496.8 > > 090 15.74 0510.8 > > 090 16.00 0522.3 > > 090 Average 546.62m > > 090 HAAT -100.12m > > 135 03.00 0574.4 > > 135 03.26 0565.4 > > 135 03.52 0586.3 > > 135 03.78 0582.6 > > 135 04.04 0567.3 > > 135 04.30 0534.8 > > 135 04.56 0479.7 > > 135 04.82 0466.2 > > 135 05.08 0516.6 > > 135 05.34 0576.7 > > 135 05.60 0588.9 > > 135 05.86 0575.2 > > 135 06.12 0558.2 > > 135 06.38 0525.6 > > 135 06.64 0535.3 > > 135 06.90 0565.8 > > 135 07.16 0597.3 > > 135 07.42 0626.1 > > 135 07.68 0617.3 > > 135 07.94 0547.5 > > 135 08.20 0481.4 > > 135 08.46 0448.4 > > 135 08.72 0468.3 > > 135 08.98 0397.0 > > 135 09.24 0377.4 > > 135 09.50 0377.0 > > 135 09.76 0377.0 > > 135 10.02 0391.9 > > 135 10.28 0461.2 > > 135 10.54 0551.1 > > 135 10.80 0600.9 > > 135 11.06 0596.0 > > 135 11.32 0595.5 > > 135 11.58 0610.6 > > 135 11.84 0631.1 > > 135 12.10 0638.7 > > 135 12.36 0624.0 > > 135 12.62 0605.4 > > 135 12.88 0595.0 > > 135 13.14 0592.9 > > 135 13.40 0575.9 > > 135 13.66 0565.4 > > 135 13.92 0561.2 > > 135 14.18 0566.6 > > 135 14.44 0573.7 > > 135 14.70 0559.2 > > 135 14.96 0550.6 > > 135 15.22 0556.0 > > 135 15.48 0548.9 > > 135 15.74 0443.1 > > 135 16.00 0396.1 > > 135 Average 539.31m > > 135 HAAT -92.8099999999999m > > 180 03.00 0391.6 > > 180 03.26 0420.6 > > 180 03.52 0418.2 > > 180 03.78 0491.9 > > 180 04.04 0549.9 > > 180 04.30 0575.4 > > 180 04.56 0567.3 > > 180 04.82 0566.4 > > 180 05.08 0575.2 > > 180 05.34 0578.0 > > 180 05.60 0574.8 > > 180 05.86 0572.8 > > 180 06.12 0568.1 > > 180 06.38 0566.8 > > 180 06.64 0557.3 > > 180 06.90 0548.5 > > 180 07.16 0550.8 > > 180 07.42 0561.0 > > 180 07.68 0563.4 > > 180 07.94 0551.6 > > 180 08.20 0531.8 > > 180 08.46 0508.8 > > 180 08.72 0472.6 > > 180 08.98 0441.9 > > 180 09.24 0452.7 > > 180 09.50 0466.9 > > 180 09.76 0464.8 > > 180 10.02 0463.9 > > 180 10.28 0447.1 > > 180 10.54 0396.0 > > 180 10.80 0352.5 > > 180 11.06 0347.3 > > 180 11.32 0350.1 > > 180 11.58 0355.3 > > 180 11.84 0371.0 > > 180 12.10 0386.5 > > 180 12.36 0431.8 > > 180 12.62 0518.1 > > 180 12.88 0532.2 > > 180 13.14 0530.0 > > 180 13.40 0530.8 > > 180 13.66 0541.6 > > 180 13.92 0546.8 > > 180 14.18 0546.8 > > 180 14.44 0534.6 > > 180 14.70 0511.5 > > 180 14.96 0483.9 > > 180 15.22 0473.5 > > 180 15.48 0477.9 > > 180 15.74 0493.0 > > 180 16.00 0483.2 > > 180 Average 494.01m > > 180 HAAT -47.51m > > 225 03.00 0419.7 > > 225 03.26 0482.1 > > 225 03.52 0466.9 > > 225 03.78 0458.0 > > 225 04.04 0453.1 > > 225 04.30 0426.9 > > 225 04.56 0445.7 > > 225 04.82 0439.1 > > 225 05.08 0482.1 > > 225 05.34 0478.6 > > 225 05.60 0436.4 > > 225 05.86 0413.0 > > 225 06.12 0401.0 > > 225 06.38 0408.6 > > 225 06.64 0443.1 > > 225 06.90 0451.2 > > 225 07.16 0477.2 > > 225 07.42 0478.0 > > 225 07.68 0452.7 > > 225 07.94 0412.7 > > 225 08.20 0458.7 > > 225 08.46 0461.3 > > 225 08.72 0458.6 > > 225 08.98 0441.7 > > 225 09.24 0486.0 > > 225 09.50 0496.2 > > 225 09.76 0465.2 > > 225 10.02 0447.6 > > 225 10.28 0444.9 > > 225 10.54 0478.7 > > 225 10.80 0479.0 > > 225 11.06 0480.9 > > 225 11.32 0486.0 > > 225 11.58 0536.8 > > 225 11.84 0568.0 > > 225 12.10 0570.8 > > 225 12.36 0582.9 > > 225 12.62 0577.1 > > 225 12.88 0584.0 > > 225 13.14 0574.0 > > 225 13.40 0539.7 > > 225 13.66 0506.0 > > 225 13.92 0473.9 > > 225 14.18 0450.0 > > 225 14.44 0456.7 > > 225 14.70 0480.0 > > 225 14.96 0504.2 > > 225 15.22 0537.7 > > 225 15.48 0541.8 > > 225 15.74 0522.0 > > 225 16.00 0505.7 > > 225 Average 480.83m > > 225 HAAT -34.33m > > 270 03.00 0447.9 > > 270 03.26 0459.2 > > 270 03.52 0414.2 > > 270 03.78 0445.7 > > 270 04.04 0449.4 > > 270 04.30 0527.4 > > 270 04.56 0545.2 > > 270 04.82 0516.4 > > 270 05.08 0539.8 > > 270 05.34 0530.5 > > 270 05.60 0526.8 > > 270 05.86 0534.8 > > 270 06.12 0523.9 > > 270 06.38 0512.9 > > 270 06.64 0513.3 > > 270 06.90 0518.4 > > 270 07.16 0543.6 > > 270 07.42 0554.7 > > 270 07.68 0563.0 > > 270 07.94 0563.7 > > 270 08.20 0560.2 > > 270 08.46 0539.6 > > 270 08.72 0529.1 > > 270 08.98 0499.8 > > 270 09.24 0473.9 > > 270 09.50 0442.1 > > 270 09.76 0395.6 > > 270 10.02 0373.7 > > 270 10.28 0366.9 > > 270 10.54 0364.0 > > 270 10.80 0369.2 > > 270 11.06 0415.6 > > 270 11.32 0467.3 > > 270 11.58 0418.9 > > 270 11.84 0380.5 > > 270 12.10 0374.4 > > 270 12.36 0411.8 > > 270 12.62 0459.8 > > 270 12.88 0498.0 > > 270 13.14 0486.9 > > 270 13.40 0491.4 > > 270 13.66 0512.2 > > 270 13.92 0520.7 > > 270 14.18 0511.6 > > 270 14.44 0503.5 > > 270 14.70 0511.0 > > 270 14.96 0472.1 > > 270 15.22 0464.7 > > 270 15.48 0481.7 > > 270 15.74 0493.2 > > 270 16.00 0515.5 > > 270 Average 481.09m > > 270 HAAT -34.59m > > 315 03.00 0353.0 > > 315 03.26 0369.3 > > 315 03.52 0369.6 > > 315 03.78 0356.9 > > 315 04.04 0364.9 > > 315 04.30 0372.3 > > 315 04.56 0399.6 > > 315 04.82 0396.3 > > 315 05.08 0418.0 > > 315 05.34 0449.6 > > 315 05.60 0474.4 > > 315 05.86 0536.3 > > 315 06.12 0538.4 > > 315 06.38 0507.0 > > 315 06.64 0492.2 > > 315 06.90 0489.5 > > 315 07.16 0502.2 > > 315 07.42 0500.5 > > 315 07.68 0547.3 > > 315 07.94 0536.6 > > 315 08.20 0512.4 > > 315 08.46 0516.3 > > 315 08.72 0538.2 > > 315 08.98 0536.4 > > 315 09.24 0530.2 > > 315 09.50 0531.1 > > 315 09.76 0573.3 > > 315 10.02 0576.9 > > 315 10.28 0578.8 > > 315 10.54 0567.8 > > 315 10.80 0548.1 > > 315 11.06 0507.3 > > 315 11.32 0494.0 > > 315 11.58 0495.9 > > 315 11.84 0470.9 > > 315 12.10 0461.2 > > 315 12.36 0478.1 > > 315 12.62 0529.2 > > 315 12.88 0494.3 > > 315 13.14 0442.3 > > 315 13.40 0439.5 > > 315 13.66 0450.7 > > 315 13.92 0435.0 > > 315 14.18 0449.4 > > 315 14.44 0461.9 > > 315 14.70 0476.9 > > 315 14.96 0494.0 > > 315 15.22 0497.0 > > 315 15.48 0479.3 > > 315 15.74 0457.6 > > 315 16.00 0456.6 > > 315 Average 479.5m > > 315 HAAT -33m > > ------------------------------------------------------------ > > Antenna elevation above sea level : 446.5m > > Average ground elevation above sea level: 494.27m > > ------------------------------------------------------------ > > HAAT: -47.77m > > > 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