Author Topic: RFM69HW Range issue 868MHZ  (Read 437 times)

autobot

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RFM69HW Range issue 868MHZ
« on: March 14, 2019, 01:05:42 AM »
Hello,
       I'm using RFM69HW 868MHZ module transmitter and receiver. transmitter and receiver could not communicate with 4th floor to ground floor. i used this library "https://github.com/lowpowerlab/rfm69" and using his types of antenna.

Felix

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Re: RFM69HW Range issue 868MHZ
« Reply #1 on: March 14, 2019, 09:43:14 AM »
- Use the working library examples,
- Check your settings and code settings to match
- check your wiring and antenna position

HeneryH

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Re: RFM69HW Range issue 868MHZ
« Reply #2 on: March 14, 2019, 03:02:43 PM »
FWIW,

I was under the impression that a helix antenna was nearly as good as a straight one but in my experience it was significantly worse.

I took the standard wire antenna and when I coiled it around a pencil to make a compact coil it was MUCH worse than when I straightened out the wire antenna.

Felix

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Re: RFM69HW Range issue 868MHZ
« Reply #3 on: March 21, 2019, 04:01:48 PM »
Those helical antennas are quite good.

Around the pencil huh? Nice try...
::)  :'(  ??? when I see people coiling their monopole wire antennas thinking they are making it better.