Electronics > Projects, Designs, and Technical Stuff
Instead of Lora, what?
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hagster:
There are very few radio modules around with better link margin than LoRa. To get the best out of it you need to select the slowest data rate though.

The spring antenna that come with your module is pretty crappy. You could choose a better one, or experiment with directional antennas. Remember the best RF link may actually be a reflected signal coming in through a window or something similar.

An alternative is to use a different frequency. 433MHz for instance will be better at getting through the building structure.
Marco:
Main alternatives are CC1120 and SI4463, with the latter available on the dirt cheap RFM26W.

169MHz looks like an interesting band, 500 mW ERP allowed. Used for Wireless M-bus, with slightly more expensive modules. Probably easier to use though.
panoss:

--- Quote from: hagster on April 18, 2019, 05:54:19 pm ---An alternative is to use a different frequency. 433MHz for instance will be better at getting through the building structure.

--- End quote ---
The module I'm using works at 433MHz!
From what you guys are saying, I expect it should work.
I wil try it on Sunday and will let you know.
Doctorandus_P:
I'm not a RF guy, but if both locations are fixed, then directional antenna's (cantenna) might help.
Maybe it is even a good idea to purposefully bounce your signals of a nearby building instead of trying to penetrate 7 floors.
ogden:

--- Quote from: Doctorandus_P on April 19, 2019, 05:19:56 pm ---I'm not a RF guy, but if both locations are fixed, then directional antenna's (cantenna) might help.

--- End quote ---

In right circumstances directional antennas could help, for instance both antennas are aimed at window and uses nearby building as reflector. Yagi kind of antennas shall be considered. Cantenna at 433MHz would be more like 20" diameter 50" deep bucket, way too directional as well. Narrow beam antennas are good for long, direct line of sight links where both antennas "optically see" each other.
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