Moteino RFM95 - switch freq to 868

Started by d00m178, April 30, 2021, 07:23:19 AM

d00m178

hi

just want to get some clarification.
I have moteino's with rfm95 which works on 915Mhz.
Recently I start experience some issues with send-receive data via LoRa and I think its because of new GSM stations that has been installed near my devices.
So I want to check 868 band.

As far I understand due to description:

Quotethere are no 868Mhz specific units offered, but will ship 915Mhz units for 868Mhz orders. Here is why: There is only 1 passive component value difference between the two versions and open air testing reveals no significant signal strength difference using 915Mhz units with 868Mhz settings.

if I need switch to 868Mhz I just need

    setFrequency(868.0);
into RH_RF95.cpp

?

Felix

Just call this in your sketch

rf95.setFrequency(868.0);

d00m178

#2
thank you

I suppose also I need change antenna for 868?
with old antenna (for 915) - it will not work well?

Felix

it will work, albeit not as well as a perfectly tuned antenna.