<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body>
<p><font size="+1" face="Comic Sans MS">I bought a LoRa flight
system years ago. I never used it. Around here I would have
had to fly over the Bay or the ocean to use the radios long
legs. Even flying over water in less busy areas the FAA rules
prohibit flying over 400' or beyond line of sight. The video
coming back from the drone was pretty good. I suspect they used
more than 10mW on the drones transmitter. You can just send
data from the drone radio, altitude, attitude, speed and heading
should allow you to keep control if you didn't want to hand off
to an on board robot pilot. <br>
</font></p>
<p><font size="+1" face="Comic Sans MS">I think the commercial
registered drones now being tested can legally fly over the
horizon. Some sort of LoRa spread spectrum might be used to
keep them from being hacked, lets hope so. </font><br>
</p>
<div class="moz-cite-prefix">On 10/20/2020 1:29 PM, Jacek
Radzikowski wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAA2oDvZMTm8q08KqBvs+d9C6bmYYLYssVBJYL52qMnT9p-217Q@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">
<div class="gmail_default" style="font-family:tahoma,sans-serif">BTW.
this is a test of an RC system using LoRa modulation (no
LoRaWAN protocol), conducted in a mountainous region, with tx
power of 10mW from a small handheld radio: 51.6km<br>
</div>
<div class="gmail_default" style="font-family:tahoma,sans-serif"><a
href="https://www.youtube.com/watch?v=fhlbhRqN_Eg"
moz-do-not-send="true">https://www.youtube.com/watch?v=fhlbhRqN_Eg</a></div>
<div class="gmail_default" style="font-family:tahoma,sans-serif"><br>
</div>
<div class="gmail_default" style="font-family:tahoma,sans-serif">Jacek</div>
<div class="gmail_default" style="font-family:tahoma,sans-serif">kw4ep</div>
<div class="gmail_default" style="font-family:tahoma,sans-serif"><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Oct 20, 2020 at 1:24
PM Jacek Radzikowski <<a
href="mailto:jacek.radzikowski@gmail.com"
moz-do-not-send="true">jacek.radzikowski@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">
<div class="gmail_default"
style="font-family:tahoma,sans-serif">As far I know, the
current terrestrial record for direct LoRaWAN
communication is 766km: <a
href="https://www.thethingsnetwork.org/article/lorawan-distance-world-record"
target="_blank" moz-do-not-send="true">https://www.thethingsnetwork.org/article/lorawan-distance-world-record</a></div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif">When satellites are
involved, the distances get much bigger (LoRa modulation):
71,572km - <a
href="https://hackaday.com/2018/02/22/at-71572-km-you-wont-beat-this-lora-record/"
target="_blank" moz-do-not-send="true">https://hackaday.com/2018/02/22/at-71572-km-you-wont-beat-this-lora-record/</a></div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif"><br>
</div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif">Jacek</div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif">kw4ep</div>
<div class="gmail_default"
style="font-family:tahoma,sans-serif"><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Oct 20, 2020 at
1:08 PM Martin <<a href="mailto:dcmk1mr2@gmail.com"
target="_blank" moz-do-not-send="true">dcmk1mr2@gmail.com</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px
0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div dir="ltr">I have used 70 cm LORA for tracking high
altitude balloons. It works great up to the 20 miles -
the farthest I tested.<br>
<br>
I use the Adafruit Feather modules <a
href="https://www.adafruit.com/product/3079"
target="_blank" moz-do-not-send="true">https://www.adafruit.com/product/3079</a>
with the "radiohead" library.
<div><br>
</div>
<div>73 Martin W6MRR </div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Oct 20, 2020
at 9:49 AM Alex Fraser <<a
href="mailto:beatnic@comcast.net" target="_blank"
moz-do-not-send="true">beatnic@comcast.net</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px
0px 0.8ex;border-left:1px solid
rgb(204,204,204);padding-left:1ex">
<div>
<p><font size="+1" face="Comic Sans MS">Low power
spread spectrum on the 70cm band?</font></p>
<p><font size="+1" face="Comic Sans MS">Has anyone
played with it?</font></p>
<p><font size="+1" face="Comic Sans MS"><a
href="https://www.instructables.com/Introducing-LoRa-/"
target="_blank" moz-do-not-send="true">https://www.instructables.com/Introducing-LoRa-/</a></font></p>
<p><font size="+1" face="Comic Sans MS">70cm band SS
data radio for $20?</font><br>
</p>
</div>
_______________________________________________<br>
Tacos mailing list<br>
<a href="mailto:Tacos@amrad.org" target="_blank"
moz-do-not-send="true">Tacos@amrad.org</a><br>
<a
href="https://lists.amrad.org/mailman/listinfo/tacos"
rel="noreferrer" target="_blank"
moz-do-not-send="true">https://lists.amrad.org/mailman/listinfo/tacos</a><br>
</blockquote>
</div>
_______________________________________________<br>
Tacos mailing list<br>
<a href="mailto:Tacos@amrad.org" target="_blank"
moz-do-not-send="true">Tacos@amrad.org</a><br>
<a href="https://lists.amrad.org/mailman/listinfo/tacos"
rel="noreferrer" target="_blank" moz-do-not-send="true">https://lists.amrad.org/mailman/listinfo/tacos</a><br>
</blockquote>
</div>
<br clear="all">
<br>
-- <br>
<div dir="ltr">Given a choice between two theories, take the
one which is funnier </div>
</blockquote>
</div>
<br clear="all">
<br>
-- <br>
<div dir="ltr" class="gmail_signature">Given a choice between two
theories, take the one which is funnier </div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
Tacos mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Tacos@amrad.org">Tacos@amrad.org</a>
<a class="moz-txt-link-freetext" href="https://lists.amrad.org/mailman/listinfo/tacos">https://lists.amrad.org/mailman/listinfo/tacos</a>
</pre>
</blockquote>
</body>
</html>