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As if DCS wasn't complicated enough... Ran into an issue with Colin t'other night when he was beetling around in his tank calling out target positions and lasing for me to deliver 1,000lb high-explosive gift baskets. Some connected but some did not despite confirmation and reconfirmation of the given coordinates. So... Turns out there are at least 4 different ways of representing Lat Long coordinates. 1. Degrees, Minutes and Seconds (DMS) HDDD° MM' SS" : N 43° 40' 56" x W 116° 17' 14" a more precise version of this is Degrees, Minutes and Decimal Seconds (DMDS) HDDD° MM' SS.ss" : N 43° 40' 55.87" x W 116° 17' 14.12" 2. Degrees & Decimal Minutes (DDM) HDDD° MM.mmm' : N 43° 40.931' x W 116° 17.235' 3. Decimal Degrees (DD) HDDD.ddddd° : N 43.68216° x W 116.28725° 4. UTM/UPS 11T 0557442m E 4836621 N The format of the coordinates can be cycled in the F-10 map by pressing, by default, [LALT]+[Y]. The default format can be selected in the Options menu (more information in the DCS manual, page 46). The following are the available coordinate formats in DCS: Precise Lat/Long: very precise representation of the coordinates, up to 1/100 of second by reporting decimal seconds as well; LatLong DMS: discussed above; Metric: absolute X/Y coordinates; LatLong DDM: discussed above; NATO MRGS: acronym for Military Grid Reference System. Depending on what airframe/vehicle you are in/talking to will define which need to be used. F-14 crews want DMS (DD°MM'SS") F/A-18C crews want DMDS (DD°MM'SS.ss") F-16 crews want DDM (DD°MM.mm') Mirage 2000 crews want DD (DD.ddddd°) A-10Cs have the ability to choose IIRC and are therefore the most flexible. There are conversions but I have to go now so will talk about them later. For now just be aware the target coordinates you give/take may not be the ideal format for your/their system to handle.