my fingers are popsicles, but I checked the range of my weather station with the new antenna.
187 sidewalks squares. Finally lost signal when I crested the hill. Bad latency though after halfway. Figure the squares average 4.25 feet (the shortest was 3.5 feet, 3 houses worth were 5 feet, rest around 4 or so), 187 * 4.25 = 795 feet of range with the 12 Db antenna. Was 110 feet with the 2.5 or so db dipole antenna.
46.07 degrees F
48.5% humidity
27.52 degree dewpoint
29.55 inHg barometer
0.31 inHg Saturated pressure
0.13 inHg Vapor Pressure
19.26 water grains
-767.45 density altitude
Compare to:
temperature = 43.0 deg f
relative humidity = 66 %
uncorrected barometer* = 29.56 Hg
dew point = 32.0 deg f
saturation pressure = 0.278 Hg
vapor pressure = 0.184 Hg
grains = 27.2
density altitude = -508.08 ft
temperature = 45.0 deg f
relative humidity = 53 %
uncorrected barometer* = 29.71 Hg
dew point = 28.4 deg f
saturation pressure = 0.300 Hg
vapor pressure = 0.159 Hg
grains = 23.4
density altitude = -583.45 ft
43 degrees F
57% humidity
29 degF dewpoint
45.7 degrees F
55% Humidity
30 degF dew point
temperature = 43.0 deg f
corrected barometer* = 30.24 Hg
relative humidity = 60 %
uncorrected barometer* = 29.54 Hg
dew point = 30.0 deg f
saturation pressure = 0.278 Hg
vapor pressure = 0.167 Hg
grains = 24.7
density altitude = -505.81 ft
http://www.airdensityonline.com/trackresults.php?trackname=Redline%20Raceway
temperature = 43.0 deg f
corrected barometer* = 30.24 Hg
relative humidity = 61 %
uncorrected barometer* = 29.69 Hg
dew point = 30.2 deg f
saturation pressure = 0.278 Hg
vapor pressure = 0.170 Hg
grains = 25.0
density altitude = -682.17 ft
temperature = 37.0 deg f
corrected barometer* = 30.30 Hg
relative humidity = 81 %
uncorrected barometer* = 29.83 Hg
dew point = 32.0 deg f
saturation pressure = 0.220 Hg
vapor pressure = 0.178 Hg
grains = 26.2
density altitude = -1244.58 ft
Looks like I just need a smidge more humidity correction and I can call it good to go! That will fix the water grains and vapor pressure as well.
This is a spreadsheet I am using: http://i1105.photobucket.com/albums/h355/magnethead494/Screenshot2011-11-11at23245AM.png
The first row, I had it under my truck in the school parking lot, so I think it was picking up ground heat.
The second row, when I tested range, I had it on dad's tonneau cover on his truck.
The temperature still averaged on the high side by about 3 degrees, which is why the saturation pressure is off by just a smidge. But I'm not going to bother that. Just adjust the humidity ever so slightly and call it good.