I just told him what we were told. and can be backed up with info. Source: http://callofduty.wikia.com/wiki/SAT_COM
The SAT COM is a 3-point streak (4-point in Support) featured in Call of Duty: Ghosts. It acts similarly to the UAV from previous titles, causing enemies to show up as a dot on the radar. Unlike the UAV, the SAT COM is a deployable ground equipment rather than an aircraft. In team games, the number of friendly SAT COMs present on the map determine their combined effectiveness:
Enemies are only shown on the minimap when they are in friendlies' line of sight.
The minimap is sweeped to reveal enemies, like the UAV of previous games.
The sweep will have an increased frequency, similar to previous titles when multiple UAVs were active.
The sweep will retain its increased frequency as well as show the direction enemies are facing, like the Advanced UAV or effect of having three UAVs active simultaneously in Call of Duty: Modern Warfare 3
Or this.. Source: http://www.charlieintel.com/2013/09/25/ghostss-killstreak-satcom-fully-detailed/
In a new Elite post, Infinity Ward and Activision have revealed how the new replacement if the UAV, SATCOM, Killstreak will work in Ghosts.
1 Active SAT COM
Eyes on: With one SAT COM on the field, enemy players within the line of sight of you or your teammates will show up on the mini-map.
2 Active SAT COMs
With a second active SAT COM, your team is awarded the traditional sweeping UAV effect, highlighting enemy positions at brief intervals.
3 Active SAT COMs
A third SAT COM increases the frequency of radar sweeps. This results in tighter surveillance on enemy movement.
4 Active SAT COMs
If you’re lucky enough to get four active SAT COMs, all detectable enemy players will show up as solid arrows indicating the direction they are currently facing. The ultimate surveillance tool.
The more SAT COMs active, the better. They do have to be placed on the ground, so it’s important to avoid deploying them in open view where enemy players can easily destroy them. On the other hand, it’s vital that you take out any enemy SAT COMs you encounter.
There are also a couple of perks to keep in mind that directly affect the SAT COM:
Wiretap
Utilize all active enemy and friendly SAT COMs on the field.
The Wiretap perk allows you to passively hack into enemy SAT COM units, providing additional surveillance throughout the match. Use your improved tracking abilities to communicate enemy position to your teammates.
Off the Grid
Undetectable on the mini-map by SAT COM and radar pings.
For those that prefer to stay under the radar, Off the Grid negates the enemy’s ability to ping you via SAT COM. Just remember, firing your character’s weapon will still briefly reveal your position on the mini-map, unless you’re using the Silencer attachment.
This is the official word from IW. Perhaps someone saw him under there, which explains why you know where he was? Or he was firing an Unsuppressed weapon?
The OP asked a question, I answered it.