Bychris561
Hello, I have a question:
Is there a way to attenuate a Lora signal using hardware tools?
So something like an attenuator that reduces the signal strength by half or something?
Thanks and greetings go out 👍
(1 votes)
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What you need is a “damping element“. In the end, these are additional resistors in the line between receiver/transmitter and antenna.
It’s meaningless in the transmitter. This is because the transmitted signal is regulated via the transmission power, which can certainly also be set in LoRa modules.
Attenuating elements are more useful to use in a receiver, since they transmit the received signals to the receiver somewhat weakened. This prevents the receiver from getting too much input voltage and distorting the received signals. This would then lead to non-decoding signals at LoRa.
The stupid thing is that there are no pure LoRa stations and LoRa receivers.
Therefore, I can definitely recommend that you take down the transmitter output power until the counterpoint can no longer decode signals. Then you turn the transmission power up slowly until a safe reception is possible. Then you “turn” another two ticks and are on the safe side.
I’m sure your LoRa modules have a parameter for the transmission power.
Hey wow thank you very much for your answer!
yes it is a recipient. The stupid thing I can’t get the transmission power because both Lora modules are supposed to be stuck on an antenna. Now I get the signal I split through a module and both receive the same signal strength. And that’s my problem. Now I thought well adapter, longer cable and so naturally reduced my signal strength nevertheless I believe that will not be enough. And well, there are Lora Signal Amplifiers so I believed that there should be signal dampers or so….
LG
Yeah, sure… you can build it yourself. You need three resistors, whose size you can calculate on the formula at Wikipedia. The impedance is in any case 50 ohms. You can calculate how strong you want to fight it.