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<div class="moz-cite-prefix">The problem for HAB is that for
receive-only (as is usual for groundstations) the vast majority of
people are using software defined radio platforms or communication
receivers, neither of which can receive LoRA because it is a
proprietary spread-spectrum scheme. Currently, the _only_ way you
can receive a LoRA transmission is using a real Semtech radio.<br>
<br>
Mike<br>
<br>
On 03/01/16 14:09, Bo Herrmannsen wrote:<br>
</div>
<blockquote
cite="mid:CAFqpYu74cvWBoffnZ0W3JpSZ4bQ_TD5iQceCUpxxReNbT602HQ@mail.gmail.com"
type="cite">
<div dir="ltr">yep i figured that last night....
<div><br>
</div>
<div>the arguement was that it was not as open as FSK mode
was... i cant see why they have some much against it... </div>
<div><br>
</div>
<div>but oh well, i think they will figure it if LoRa becomes
the standard for small sensors</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-01-03 14:44 GMT+01:00 Mike
Stirling <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:mail@mikestirling.co.uk" target="_blank">mail@mikestirling.co.uk</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Some (e.g. daveack) have used it for tracking as an
alternative to RTTY. I don't think they're using it for
<a moz-do-not-send="true" href="http://ukhas.net"
target="_blank">ukhas.net</a>, which is probably what
James meant.<br>
<br>
On 02/01/16 20:51, Bo Herrmannsen wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hi mike....
<div><br>
</div>
<div>have been thinking... you say that the HAB guys
use the LoRa radio... are you sure about that? was
on an IRC chat and james said that they have
rejected it on the grounds that its not open source</div>
<div><br>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2015-12-31 11:20 GMT+01:00
Mike Stirling <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:mail@mikestirling.co.uk"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:mail@mikestirling.co.uk">mail@mikestirling.co.uk</a></a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Hi Bo,<br>
<br>
The MAC layer (LoRAWAN), which I think Jeremy
is referring to, is a public spec, but the
underlying modulation is not. You can
therefore currently only implement a LoRA
system using one of Semtech's radios or a
module based on their IP (e.g. Microchip).
The modulation is some sort of chirp spread
spectrum system so is non-trivial to reverse
engineer, but efforts are ongoing in the
community. Once that happens it would be
possible to implement the physical layer in a
software radio if that's what you want.<br>
<br>
Note that you can use a LoRA radio without the
LoRAWAN MAC (as the HAB guys currently do).
In this case it just becomes a proprietary
data pipe like the RFM22B or RFM12, but with
longer range.<br>
<br>
Mike<br>
<br>
On 29/12/15 10:03, Jeremy Poulter wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">From what I understand there is
a component that is signed and you can not
change it but I believe the source will be
available at some point. This is the
component that deals with the time slicing
and transmitting so you can not send more
than you are supposed to.
<div><br>
</div>
<div>Jeremy</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">On 28 December 2015
at 13:37, Bo Herrmannsen <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:bo.herrmannsen@gmail.com"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:bo.herrmannsen@gmail.com">bo.herrmannsen@gmail.com</a></a>></span>
wrote:<br>
<blockquote class="gmail_quote"
style="margin:0 0 0 .8ex;border-left:1px
#ccc solid;padding-left:1ex">
<div dir="ltr">Hi
<div><br>
</div>
<div>on the topic of using LoRa i have
been told that parts of it are
closed source in the way that you
send data off by AT commands and
then "magic" happens</div>
<div><br>
</div>
<div>Have i been told wrong?</div>
</div>
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