Usage cautions

The LNA of HackRF is extremely sensitive, thus you need to notice the following things:

SMA port

• DO NOT change/ swap/ take off/ put on antennas while power is on IN ANY CASE.
• If you use an antenna that expose the literal metal part (for example a telescopic antenna), DO NOT physically touch the antenna with you hands/ body/ or any physical things that is conductive, since the static elec is dangerous to LNA.

Monitoring range

• The LNA of hackrf is physically between SMA port and radio front end
• Thus, you should notice that you shouldn't receive near high power transmitters, even if it's not in the range that you are monitoring.
• For example: You are receiving FM radio at 100.00MHz, and there's a high power transmitter at 2.5GHz around you, but the transmitter will still blow your LNA, if you set LNA/AMP too high and/or too near the transmitters, even if 2.5GHz is not in the freq range that you are monitoring.