Im making a project involving an NRF24L01 PA LNA. It is controlled by an esp32. How to expand the range / power of it? Thanks in advance.
Depends on how much you want to increase it ?
Putting the RX and TX antennas higher above ground can help.
You can also use high gain antennas, but they need to point in the right direction.
There are 2.4Ghz amplifiers available but their use is likely to be illegal, and the use of high gain antennas can be illegal too.
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The RF bands are tightly regulated in many countries, typically overseen by a central authority. In the US, this is the FCC (Federal Communications Commission), which is responsible for managing RF emissions and licensing their usage.
In the US, devices can operate under type acceptance, which allows them to function on specific frequencies within a defined Effective Radiated Power (ERP) limit. Type acceptance is granted only after devices are proven to meet regulatory requirements. Exceeding these power levels or causing interference can lead to significant fines and legal repercussions.
Before proceeding, ensure you understand and comply with your local and national regulations regarding RF usage. This step is crucial to avoid legal and financial issues.
Tell us more about the project. Are you using the receiver part to acknowledge the receipt of a message? If only receiving, then you can make the antenna as large as you want.
But since you are using the PA LNA on both sides, you are most likely to expecting an acknowledgement for each message sent.
What makes you think you need to expand the range? What testing have you done? Results?
Most often a very good idea to describe the actual project.
Its possible that expanding the range of the NRF24 is not a viable or practical solution to your project.
Basically difficult other than specialized antenna work, but how far, have you considered ESP-NOW?
There is a module with a screw-on antenna. It was apparently proven good for 1km line of sight in downtown KL.
No idea, it’s something you’ll have to try and test. Also, keep in mind that the receiving antenna is just as important as the transmitting antenna, if not more so. While there may be restrictions on the transmitting antenna due to regulations, there are generally no restrictions on the receiving antenna, apart from local codes such as tower height limitations. Make sure to comply with those while optimizing your setup.
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