- What is LoRa and what is TTN?
- Which band is used in South Africa?
- How do I start?
- How many transactions does the infrastructure support?
What is LoRa and what is TTN?
The features and differences can be best explained with these two simple introductory videos:
Which band is used in South Africa?
We use the 868MHz band, as does Europe. Radio regulations differ worldwide and are split into regions. This is significant when ordering components where you would usually have to distinguish between 868MHz and 915MHz (North America).
The 868Mhz band is within the ISM (industrial, scientific, medical) band defined by ICASA and eligible for unlicensed operation. For more see our discussion in the TTN forum
How do I start?
There are plenty of options. Here possible approaches:
How many transactions does the infrastructure support?
The Things network has a fair use policy
- An average of 30 seconds uplink time on air, per day, per device.
- At most 10 downlink messages per day, including the ACKs for confirmed uplinks.
Which boils down to
- 30 seconds air-time per device per day
- For 10 bytes of payload, this translates to approx.:
- 20 messages per day at SF12
- 500 messages per day at SF7
- This allows for >1000 nodes per gateway
It is worthwhile noting that regulatory bodies commonly set the Maximum Duty Cycle to 1% for LoRaWAN
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