Has anyone installed a cellular booster?

Another talked about adjusting gain according to signal strength and distance from antenna. 

I'm a long ways from understanding all this, but a little further along than I was weeks ago..

If you can adjust your gain, I suggest turning it down and slowly coming up till you hit the sweet spot. That's what I'll be trying with each location I need to use it. Well, so's the current thought.. Hopefully you can and it helps.

Rule #1, you cannot use a omni directional antenna and expect improvement.  You won't even "double" the signal you are hoping to.   Before I get yelled at,  if you have a poor signal at 7 miles, then the Omni will make it better, like 5 miles, but not great like 1 mile.  

A panel antenna of the right frequency will be easier to point and go much further, I have them in the 14 mile range working quite reliably.   A Yagi style, long and skinny, will offer the most gain and can work 20 miles away.  This is all assuming you know where the antenna is.  LTE has the benefit of being somewhat non line of sight.  Meaning a hill or building shouldn't ruin your chances of success.  Getting antenna location is pretty easy then you just kinda point.  Large obstructions are a problem ( mountain) but you can reach the horizon with enough gain.  Bodies of water are also a problem as the signal bounces.  

If the signal is too hot your not going to like that either, thus have more than one antenna (panel & yagi).  Depending on what device you have you can get your signal level   Ideal signal strength is -50 to -70db.  Higher is better (-50 > -70).  Neg 80 will probably not work.  The whole thing is essentially physics.  Antennas need to be some multiple of frequency wavelength.  700mhz is 16" top to bottom so the antenna needs to be a multiple of 16".  16 x2, or 16 x .25 .  Bigger the better.  Smaller is more portable.  Modern cell phones will have 1/4 wave, where back in the day a bag phone had a full wave.

One bar to two, pushing 3, but be it known, my router is inside and I'm shooting through a wall!

I couldn't get in a position to see the router directly, yet as is... not bad with all things considered. Now if the campground has an outside antenna to broadcast.. Ya Baby! 

Hopefully the 'good antenna' (the one I actually ordered) comes in on Tuesday/Wednesday as scheduled. I leave Thursday and will have to run it (test it) on the road.

So far, I'm liking what is happening. The correct antenna and I should be able to do what I hope. Time will tell.

If it works well.. I'll post specific details if your so inclined.