Are you using Google Translate for this? Becase both "Shooting Range" and "Gravitational Field" does not make any sense for an AP. I am guessing that you mean that you have trouble with the APs not transmitting at a power where you can communicate with them at a distance greater than 10 meters?
This sounds weird.. You can check the EIRP power setting in your ARM profile.
Go to Configuration > AP Group > RF Management > 802.11a/g > Adaptive Radio Management (ARM)
The settings you are looking for is Max Tx EIRP and Min Tx EIRP.
Make sure that the Max Tx EIRP is set to 127 and if it allready is set to this, you could try to increase the Min Tx EIRP in small increments. Maybe for some reason your ARM is setting the TX strength to a very low value.