Author Topic: What makes a RFM69HCW be on 433mhz or 868-915mhz bands ??  (Read 106 times)

AgroMe

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What makes a RFM69HCW be on 433mhz or 868-915mhz bands ??
« on: September 11, 2020, 03:03:55 PM »
Hi,

The modules look identical to the untrained eye so what makes on module forced to 433mhz and others software configurable to 868-915mhz ??
Why aren't they all software configurable 433 to 915 ??

TIA, and pardon the newbie question.

Best,
Alex

Felix

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Re: What makes a RFM69HCW be on 433mhz or 868-915mhz bands ??
« Reply #1 on: September 11, 2020, 06:29:06 PM »
Hardware: components that make up filters which filter out unwanted frequencies. Look at the proposed schematics in the datasheet, they have different values for different frequencies.
Its like the transmission on a motor, the motor is the same, transmissions can do all kinds of things for various purposes.

AgroMe

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Re: What makes a RFM69HCW be on 433mhz or 868-915mhz bands ??
« Reply #2 on: September 12, 2020, 09:01:19 AM »
Thank you sir!