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?
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?