Cell Booster Question

I saw a rig with the Weboost (trucker antenna) yesterday at a gas station and asked him about the inside range. He said you have to have the device right next to the inside antenna...there is almost no range inside. In fact he creates a hot spot inside in order to use his phones etc normally. That said, he loves the Weboost and thinks it worth the money.

First a saying "The higher the better" (within reason) it's a calculus job to figure out what the crossover point is but the higher the antenna (outside)
1: The farther it is from the inside antenna
2: The stronger the signal it can receive (or the farther it can see take your pick)
3: The greater the line loss if the amplifier is in the house (You can put the amplifier in a weatherproof box closer to the outside antenna and go quite high)

Next. there are direcitonal antennas. One is described in another post in this same forum.. Those greatly extend your range. each 3 DB gain = 1.4x distance. OR MORE.

You have to remember that the outside and inside antennas set up a interference with each other. If the inside antenna was that powerful it would interfere with the outside reception.
We have a Wilson with the candy bar inside antenna. We lay the phone / hotspots on or within a few inches and use Bluetooth for calls or WiFi for data to other data devices. The rv broadcast type larger antenna is measured in feet . .. the one I tried was like 3’ then useless. If you go with the larger home style room broadcasters I would think the “loop” with the outside antenna would be a major problem.
The other thing .. many times if the outside signal is strong enough the booster actually degrades the reception , at least we found that to be true so we leave it off 90% of the time unless we actually need it.
In short , no way you sitting at the outside table getting a boosted signal, it won’t work like that.