diff --git a/Usage-cautions.md b/Usage-cautions.md index 645a090..332276f 100644 --- a/Usage-cautions.md +++ b/Usage-cautions.md @@ -1,9 +1,9 @@ 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. +- 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. (It's not like it's definitely would damage it, but a thing that you may should prevent. Antennas which have plastic protection however won't be influenced.) # 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. \ No newline at end of file +- Thus, 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, 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. \ No newline at end of file