The distance between two adjacent geohashes depends on the latitude & longitude of the center points. In order to get an accurate distance of your bounding box you need to get the adjacent boxes, calculate their center lat/lon and get the distance.For example, to the get distance of each geohash in dqcjqcperh9tdqcj, you will get the following distances for adjacent boxes. Keep in mind that these numbers change slightly as the center geohash changes. Precision, Distance of Adjacent Cell in Meters1, 50035302, 6254413, 1232644, 195455, 38036, 6107, 1188, 199, 3.7110, 0.6I would calculate the center point of each bounding box and calculate the distance using one of the formulas listed hereHere is a good javascript library that calculates adjacent geohashes and provides lat/lons to use for calculations.
The GENSTAR AHD DVRs are available in 4, 8 and 16 channels with up to 4TB of internal storage. AHD DVRs AHD Cameras Features: 1080p HD resolution: True Day/Night, Defog, Digital WDR, Advanced signal filtering, 3D noise reduction ong range transmission distance: max. L 300 meters over traditional 75-5. It depends on the type of cable. Generally accepted spec for good-quality RG-59U (solid copper core and 95% copper braid shield) is 250m; RG-6U is 350m; and RG-11U is 500m. Signal won't simply stop working beyond that, but the longer you go, the m.
/ SDI Maximum Cable Distance ChartSDI Maximum Cable Distance ChartMaximum values represent the approximate range at which the bit error rate 'cliff region' will occur.In every system, the quality of the output pulse, the amount of loss that can be compensated for by the receiver, the number of passive connectors and patch points, and the exact amount cable loss will vary. Because of this, the exact maximum cable length possible will vary.
The above graphs do not represent the exact cable length possible; they only serve as a guide in selecting the appropriate cable type. When installing a cable in a system and it is approaching its maximum range, it is highly recommended that individual system testing and research be done.