Hi, i have recently got a new laptop, a Dell Latitude D620 and read on the laptop list it works fully with injection. However when i start trying to use airmon and the aircrack suit, i use the command airmon-ng stop eht1 and it shows the eth1 which uses the broadcom bcm43xx chipset. I am using the same commands as with my atheros chipset wirless card apart from changing the ath0 to eth1. When i put it into monitor mode and scan, all the wireless have 0 power, even my own.

Any idea as to what im doing wrong, maybe i need to use different commands?

Thanks