Hello,
I already developping an application using RFM69 and RFM69 library. This application work well, thanks for the library !
I have to developp an other application using RFM69 modules too, in the same area but other radio messages.
Because the first application send a lot of message, i want to adjust the frequency for the second application to be placed in an other radio channel.
Both application run on 433 Mhz, can any body explain me how to select an adjacent chanel in the same 433 Mhz range ?
I do some modification to the library for using with EPS 8266 and I can send it if there is some interest.
Best regards and many thanks for help.
Thierry Vorms
You just pick an adjacent frequency that is far enough from your main or other frequency. Typically the deviation of a channel is up to 500khz, so if you have channels 500Khz apart you will be fine.
A frequency band of 915mhz for instance is really from 902mhz to 928mhz, see this doc for instance (https://www.semtech.com/images/promo/FCC_Part15_regulations_Semtech.pdf).
Similar for 433mhz.