How to send large data over Lora?

[livius]

@MM_BTR
If you are here - plese tell us how it is possible with so limited bandwidth by law
to transfer something more then few bytes on free channels?
Or maybe you do not use free channels?

[papasmurph]

@ahanley409 You could connect to a WiFi access point directly from the LoPy, or you could attach a cell/mobile modem via a serial port. LoRa is simply not designed for transfer of a lot of data. It's optimized for long ranges and battery-powered devices.

[robert-hh]

@livius Looking at the web site, the beartooth seems to be an add-on to a cellphone, more or less a backup-battery with a add-ons. For long range communication the cell phone seems to be required, and that device just connects with the cell phone.

[livius]

@robert-hh
Then this is not the Lora only normal cell calling?
Maybe i do not understand this correctly - but they talking about talking directly from phone to phone?
Then without cell operator - how?

[papasmurph]

@livius If there's no mobile coverage (or maybe otherwise too) it uses long range radio and connecting only to equal devices on others' phones. In other words Beartooth to Beartooth. That's the interpretation I can make from this: https://www.beartooth.com/

[livius]

@papasmurph said in How to send large data over Lora?:

If there's no mobile coverage it uses long range radio

What does he use? And on what frequency?

[papasmurph]

@livius See https://www.beartooth.com/# 900 MHz Digital Transceiver (US Spec: 902MHz - 928MHz), FSK and LoRa Modulation with Frequency Hopping etc

[livius]

@papasmurph
Is this legal?

[papasmurph]

@livius I don't know. I'm just introduced to LoRa, so I have a hard time keeping up as it is :).

[MM_BTR]

@livius yes it is legal!
https://apps.fcc.gov/oetcf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=grz7JNktqwfpYW%2BogF7SyQ%3D%3D&fcc_id=2AJY7007

[littlebat]

There are a few keys here. One is that beartooth is using both lora and FSK modulations with p2p and not lorawan. FSK will give higher datarate. Two is that there is not a 1% duty cycle limitation on 915mhz in us like 868mhz in Europe. There are still power restrictions.

Would love to see an open source beartooth clone with 2 lopy's. Beartooth and gotenna are cool but too expensive, I just stick to cheap 2-way radios for now.