Radio transmission for SD card

Thread Starter

Motanache

Joined Mar 2, 2015
540
There is a device that writes data to the SD card.

I'm looking for a way to trasmit to a few miles away file from this SD card and write at the reception on an identical SD card.

questions:
- what radio transmission and reception module shud buy.
Please tell me which frequency can be used for such a transmission.
Which is the maximum power I can emit at that frequency.
I'm looking for a free frequency like the citizen bend (CB) or PMR.

- You can help me with the digital. How do I transmit the data from the SPI bus?
 

Thread Starter

Motanache

Joined Mar 2, 2015
540
Is there any radio problem with Radio Packet in PMR446?

Another option would be LoRa (Arduino), but it is too expensive.

What is the maximum allowed power in the frequency that emits LoRa?
 
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