[HH] Semtech long range device using 2.4 GHz

[Stephen Ronan]

Those Semtech 2.4 Ghz boards support LoRa, FLRC, and (G)FSK
modulation. Someone who knows far more than I do about these matters
explains that the 2 Mbps data rate I had cited is via the FSK
modulation. While for LoRa the data rate depends on the spreading
factor (SF) about which more here:
https://www.thethingsnetwork.org/forum/t/how-spreading-factor-influence-time-on-air/5068
Specifically, in respect to data rates he wrote:

"for LoRa 2.4Ghz it's

SF 5: 202 kb/s
SF 6: 122 kb/s
SF 7: 71 kb/s
SF 12: 0.476 kb/s"

On Sun, Mar 19, 2017 at 5:26 PM, Stephen Ronan <sronan at gmail.com> wrote:
> I don't know what to make of this... a new product from Semtech (which
> owns the core LoRaWAN patent) that uses 2.4GHz spectrum... and
> advertises a "sensitivity, down to -132 dBm". The last of the links
> below says:  "The new 2.4 GHz wireless RF solution enables
> point-to-point wireless links that can support custom protocols with
> configurable data rates up to 2 Mbps". By contrast, my understanding
> is that their LoRaWAN products max out at something like 20 kbps.
>
> https://www.thethingsnetwork.org/forum/t/2-4-ghz-lora/6045
> http://www.semtech.com/apps/product.php?pn=sx1280,
> https://www.semtech.com/wireless-rf/24ghz-wireless-rf-solution
>
>  - Stephen