... deal with factory, can give you bes gps and gsm combination antenna, fakra connector, 30db 3-5V,28dBi gain,SMA male ... connector,magnetic mountingPart number:GKA-GPS-SMAZ5GPS antenna:One. Dielectric antenna specification 1. GAS1575R(25*25*4mm) 2. ... 3. V. S. W. R 1.5:1 4. Band width +/-5 MHZ 5. Attenuation fo+/-100mhz>30db 6. ... =5.0v+/-0.5v 2000pcs for 480 gps+gsm+wifi combination antenna