... where there is cellphone,there need booster,because the weak cell phone network amplifier signal problem is gsm mobile antenna booster ... ,27dbm,30dbm,33dbm,37dbm,40dbm,43dbm,46dbmALC≥20 dBOuter-band Dispel<-40dBmIsolation>60dBStanding wave≤1.35 dBTri-rank intermodulation≤- ... 40dBc(PO=20dBm/CH/2CH)band flatness≤+3dBRelay PhoneGSM Install MethodsLay/ Hang top(Indoor)Power ...