Заходишь такой на ютуб видео* про LoRa посмотреть, а там очень интересное в комментариях

> Hi, I've been working in the RF engineering space for over 15 years, some insights. There will be a limit to range due to the transmit power of the devices, this is something that is usually limited by region, hence the reason why you need to pick a region on the inital set up, this is usally called reglatory domain, and controlled by the FCC in the US, OfCom in the UK and ETSI in the EU. A larger antenna does not mean that you will be able to transmit further, however it does mean that the device can 'hear' more, as it has a larger capture surface. The antenna used in the video, both 'stubby' and 'whip' are known as omni-directional antenna, this is because they transmit their power in usually a 360 degree radius from the antenna, range is also liimited with this type of antenna as it is transmitting in all directions, think of the power being divided equally in a 360 degree circle around you, the target node is in one of those directions so would, for example, only be receiving 5% of the transmit power of the originating device. Range could be dramatically increased by using a directional antenna, for example a 20 degree one, as the transmit power would be divided over a much tighter space. This is quite simplified, mulitple other factors such as polarisation and attenuation come in to play as well, and this is a comment, not a white paper :)

> LoRa is not a 'illegal' technology, it was developed to fulfill a need in both urban and rural remote areas to transmit data, usually from autonamous nodes such as traffic lights, weather stations etc, where the data payload is low, its also used quite heavily in the farming industry to track wildlife, report on the health of crops and machinary. It also uses a lower frequency than traditional WiFi, which means the wave length is longer, and is able penetrate more dense materials, there for increasing its potential range.

> The one concerning thing highlighted in the video for myself, was the ability to track nodes, it seemed like you were able to determine the location natively on the device of a node without any kind of authentication.

> Another note to add would be SIGINT (Signal Intelligence), if someone is planning on using these devices in a situation such as a warzone or potential conflict zone (I'm thinking of civilian communications in Israel or Ukraine), as this creates a mesh network, meaning there will always be some level of RX/TX from these devices, by either relaying of messages, or attempting to discover new nodes in the mesh network, these devices would be quite easy to track down for an equipped force, potentially aiding in the capture or attack of the user. The equipment needed by people/govenments/militaries to track these types of signals is fairly ubiqutious now and rather cheap, something to keep in mind. SIGINT operators utilise 'listening posts' or devices (drones, AWACS etc) to 'listen' for RF, trianglate the signal and direct forces to that location (or order strikes), this has been used to great effect by the Ukraine military against the Russian Federation in the early part of the conflict for example.

*) https://youtu.be/40llxjrIG3w