Heltec Lora HF vs LF filter for LoRa

#1

Hi,

I received a Heltec LoRa board and was wandering about the LF and HF on board path.

if a board has LF not connected (and HF connected with a resistor/jumper/cap) its for 915/868MHz , right?

but if I change this to the LF (and disconnect HF) is it safe to say that it will work without any problem for 433 ?

#2

Just a maker on the PCB to say what the other components that are fitted are tuned for - changing the resistor won’t make any difference, it will still be HF. This is a common way of marking boards with different parameters of components.

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#3

thanks for making it clear.