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LoRa™ =Long Range wireless data telemetry and relates to a radical VHF/UHF 2-way wireless spread spectrum data modulation approach that has recently been developed & trademarked (™) by Semtech - a long established (1960) US multinational electronics firm. Refer [1]=> http://www.semtech.com/

The technology behind LoRa™ was developed by Cycleo, a French company acquired by Semtech in 2012. LoRa™ is proprietary, but it appears to use some sort of "simpler" CSS (Chirp Spread Spectrum) pulsed FM "sweeping frequency" modulation rather than DSSS (Direct Sequence SS) or FHSS (Frequency Hopping SS).

Semtech's web site mentions that "LoRa™ technology offers a 20dB link budget advantage compared to existing solutions, which significantly extends the range of any application while delivering the lowest current consumption to maximize battery life."

Claimed ranges are typically x10 that of regular UHF wireless data systems. Yes -compared with regular narrow band data setups LoRa™ gives 100s of metres rather than 10s, several 1000m rather than mere 100s. Magic !

LoRa™ is somewhat complicated,as it uses terms and requires settings likely unfamiliar to many "normal" users. Pleasingly however it's been found possible to verify claims with simple setups - here using paired UK sourced US$3 PICAXE micros as the controllers. PICAXEs are near ideal for such trials as they're programmed in high level interpreted BASIC & any execution speed overheads are incidental for the s-l-o-w LORA™ data !Refer [2] => www.picaxe.com

Step 1: Semtech's SX127x

In recent decades, & aided by cheap PC processing,diverse smart digital modes have been developed (especially by radio hams) for lower frequency HF (3-30MHz) work where bandwidth is precious. (Bandwidth hungry spread spectrum modulation is usually illegal on these lower frequencies). Some modes can span oceans with low power (a few Watts) but are slow & need sophisticated PC software for encoding/decoding, along with very sensitive comms. receivers and significant antenna. Refer [3] => http://hfradio.org.uk/html/digital_modes.html

Semtech's VHF/UHF SX127x LoRa™ RF ICs however house almost everything within a smart thumb nail sized ~US$4 chip!

Semtech makes several RF IC variations, with the SX1278 being lower UHF frequency slanted to suit 433 MHz ISM band users. Higher freq. 800-900 MHz offerings appeal for more professional work, although at these near 1GHz frequencies reduced RF punch and signal path absorption may be an issue. Sub GHz frequencies however have lower noise, legally higher transmit power & more compact high gain antenna that may offset this.

As well as LoRa™.modulation (shown pictured), SX127x transceiver modules can also produce FSK, GFSK, MSK, GMSK, ASK/OOK and even FM tone signals (Morse Code !) to suit legacy systems. Refer Semtech datasheets (131 pages!) [4] => www.semtech.com/images/datasheet/sx1276.pdf

Note: HOPERF, a long established Chinese wireless data firm, offer LoRa™ modules with a "'7 a side" RF96/97/98 IC that seems akin to Semtech's SX127x. It's unknown however if these are just an Asian LoRa™ 2nd sourcing...

<p>Some kind soul has removed the RN2483 cover to reveal the internals. Note the RN2483 is conveniently serial addressed rather than more tedious SPI. It also includes an inbuilt RTC (Real Time Clock) which could be handy for energy saving system wakeups. These RN2483 are now available from Mouser in the US $15 range =&gt; <a href="http://www.mouser.com/ProductDetail/Microchip/RN2483-I-RM095/?qs=GtmDRopnxzr%2f%252bdGIj%252b7dVQ%3d%3d" rel="nofollow">http://www.mouser.com/ProductDetail/Microchip/RN2483-I-RM095/?qs=GtmDRopnxzr%2f%252bdGIj%252b7dVQ%3d%3d</a></p>
Scios: OK on your &quot;8000 hectare&quot; cattle farming cousin, &amp; glad he's looking at commercial options ! You never did specify either his &quot;farm's location &quot; or it's terrain- such apscts are CRUCIAL for comms. insights...<br><br>At your UHF starter level perhaps the best INITIAL way is with some simple handheld UHF PRS CBs used to explore coverage. Their power is typically a few Watts, giving a range maybe a few km in built areas, but MUCH more if Line of Sight (LoS). <br><br>LoRa offers 10 times the range for the same power, BUT you are legally only allowed 25milliWatts ! As every 6dB gain doubles range (thus 100mW gives twice the range of 25 mW) then by chance 25 mW LoRa will cover about the same as 1 Watt PRS.<br><br>As fair as UHF data starters go, these days I suggest the extremely versatile US$5 Chinese HC-12 transceiver modules. I import these directly from Satisfy Electronics in China (freight free too), &amp; all my work with them has been PICAXE related (&amp; GUI config). <br><br>HC-12 now have significant Arduino/Instructable exposure, so suggest checking the likes of this =&gt; https://www.instructables.com/id/Long-Range-18km-Arduino-to-Arduino-Wireless-Commun/<br><br>Regards- Stan.
<p>Thanks for all your advice and help, Stan. Will check out your suggestions.</p><p>Scows</p>
Kiwi firm Gallagher's approach is essentially water TANK level monitoring, which is probably less prone to stock mischief.&amp; vegetation etc than open ponds/dams. A quick Google shows an Australian firm seemingly offering similar, with the 2 way radio gear off the shelf UHF CB PRS handhelds! See =&gt; http://www.electrosense.com.au/uhf-telemetry.htm <br><br>But you can't beat &quot;management by walking around&quot; on a farm! There may be the likes of sick/dead cattle polluting the pond that a sensor would not register. Here in NZ some farmers are already using agricultural drones to check crops, stock, gates &amp; dams etc - ranges of the on board video camera can be several km ! See a recent ag. drone review =&gt; https://bestdroneforthejob.com/drone-buying-guides/agriculture-drone-buyers-guide/ Stan.
<p>Stan, I have to get a few google pointers from you. Don't know how you found Electrosense. They have a very interesting product.</p><p>Do you have a few ideas on what to search for regarding UHF CB PRS and how to use them with an Arduino? I don't know if searching using &quot;UHF CB PRS Arduino&quot; is returning the correct results.</p><p>The use of drones are amazing. I can see how they can safe a lot of time and money.</p>
Scios: Mate- Google may well be our friend but years of browsing experience can refine ! Aside from this I fincreasingly feel that almost no UHF radio link may be up to your cousins monitoring challenge. <br><br>His 8000 hectares spread is &quot;equivalent&quot; to a rectangle of sides 40 km x 20km for heavens sake. Aside from the terrain (which you STILL have not clarified) the curvature of the earth may well come into play for UHF signals propagated from near the ground. And being water holes they probably WILL be at ground level ( or even below) - your cousin may need to erect significant TALL masts to raise the trasmitters high enough for coverage. <br><br>To put terrain in pespective consider my harbour side Wellington location. In FRONT we've a clear view across water &amp; can see NZ's South Island ~40km away across Cook Strait, but immediately BEHIND me are a range of thick bush clad hills that rise to 1000 metres. Even a 5 Watt PRS handheld is pushing to get a km in the latter.<br><br>All up - &amp; since his spread is obviously a commercial business- tell him to take a look at drone planes that can fly a programmed waterhole circuit &amp; take pix for him to view. Copters have too short a flight time (approx 10min) but planes of course have wing lift &amp; some FPV (First Person View) ones can stay up for MUCH longer.<br><br>Stan.
<p>Thanks Stan,</p><p>My cousin has contacted Electrosense and they are going to see if they can help him. </p><p>From a personal view I am still really interested in playing around with Arduino and UHF. Can you give me a few pointers on what to search for?</p><p>Scois</p>
Scois: MATE - an 8000 acres &quot;farm&quot; &amp; 20 km links ( LoS ?) , along with seemingly a mission critical stock watering need ! We are NOT talking hobby farm/kids stuff here, &amp; I suspect the application is also VERY commercial.<br><br>Thought for the future - specify the setup RIGHT at the beginning of a technical request so helpers can better get an handle on things.<br><br>At least in outback Queensland you should have plenty of sun for solar charging, but the implications of something falling over are pretty profound... I was raised on a NZ farm &amp; well know how even simple things (stock hi jinks etc) can cause mischief...<br><br>25 mW LoRa at 433 MHz may just do but I'd say that UHF CB &quot;PRS&quot; channels 21 &amp; 22 are best suited. These legally allow 5 Watts TX power &amp; are specifically assigned for just such telemetry &amp; telecommand applications. Regards- Stan.
<p>Thanks Stan, never say never. At this stage I just want to try and give him something that will make his life a bit easier. Will see what eventuates.</p><p>My initial aim was to get some more understanding regarding LoRa. There are not a lot of sites that is 100% LoRa. And rather explaining the concept they would just include a link to your site. It appears as this instructable have become the definitive LoRa site.</p><p>I will have a look at the 2 options you mentioned. But I will definitely follow your advice and play around with the HC-12's. I had a look at a few sites and they appear to be very interesting. One question though - Is the spiral antenna good enough or should I invest in a cable and rubber ducky?</p><p>Scois.</p>
Scios: That HC-12 spiral antenna is no great shakes, but then many rubber duckies aren't either! Further more feedline losses can be quite significant &amp; may even cost you performance. <br><br>At UHF far &amp; away it's best to ELEVATE the setup &amp; try to get as near LoS (Line of Sight) as possible. HC-12 are good performers but you'll only get perhaps a few hundred metres reliable range thru' typical urban clutter (wooden buildings, light vegetation).<br><br>In the same situation LoRa gives several km - my best performance has been about 15km TRUE LoS cross harbour from elevated sites.<br>I'd offer to loan your some modules, but return Trans Tasman p&amp;p could be more that they're worth !<br><br>Given such a traditional &amp; critical &quot;how's the water level&quot; need I'd STRONGLY recommend you explore commercial offerings. Sure - they may be costly BUT they'll be reliable &amp; also give you DIY ideas. Here in NZ Gallagher's offerings may give you some insights =&gt; https://www.youtube.com/embed/qtvBrtoyl7g <br><br>The high power PRS data channels 22 &amp; 23 specifically reserved for just such applications may well have off the shelf offerings. I assume cellular coverage is lacking on this station ? It would again GREATLY help if you specified EXACTLY where it is so the likes of a Google Earth look see can be made. Regards - Stan. (10km LoS cross harbour from Wellington city) =&gt;https://www.google.co.nz/maps/@-41.2931307,174.8896631,18329m/data=!3m1!1e3<br>
<p>Darn, the Kiwi's beat me to it. I'll pass Gallagher's details and the Wireless Water<br>Level Monitoring system on to my cousin.</p><p>I am still going to try and build something similar. The challenge is on!</p><p>Thanks for offering t lend me some of your modules. As you mentioned, p&amp;p. I'm waiting on a few HC-12's to learn RF communication as you mentioned and will have a look at the E-32-TTL-100s1 modules. Am definitely going to look into PRS as well. </p><p>Thanks for your help and ill let you know how it goes.</p><p>Scois</p>
<p>Scois: I remain a keen LoRa man, but confess to not progressing on <br>from Dorji's TTL friendly &quot; two chip&quot; DRF1278DM. The SPI &quot;single chippers&quot; of HopeRFare certainly smaller &amp; cheaper, but their software can be much more demanding. </p><p> In fact some Chengdu EByte E-32-TTL-100s1 Chinese<br> modules just to hand may be tempting, especially since they are US$6-$9 each. I've yet to give them a whirl, but you may stimulate me into doing so ! See =&gt;</p><p>https://cdebyte.en.alibaba.com/product/60459293814-803162175/E32_TTL_100S1_3km_SX1278_LoRa_433MHz_wireless_rf_transmitter_and_receiver_module.html</p><p> Regards- Stan</p>
<p>Stan,</p><p>I know what you mean by the software of the SPI &quot;single chippers&quot; can be demanding. There is just such a big price difference between the TTL friendly &quot;two chip&quot; and the SPI &quot;single chippers&quot;. So far I have been a sucker for punishment and couldn't convince myself to got for the more expensive versions.</p><p>I've got a few DRF1278F's and Semtech's inAir4 that I am fighting with at the moment. Trying to understand native code first before using libraries. I think I understand SPI now, just have to get into the SX1278 commands. You will probably hear me in Wellington when I get them to work.</p><p>I will have a look at the 'Chengdu EByte E-32-TTL-100s1'. There range seems a bit on the low side? I have come across modules that claim up to 15km LOS.</p><p>What do you think about this module - http://www.ebay.com.au/itm/1Pcs-3Km-433Mhz-Sx1278-Lora-Long-Distance-Wireless-Data-Transmission-Module-Ic-S-/302134571083?hash=item46589fb04b:g:RScAAOSw44BYJH22</p><p>How do you decide what is a good Lora module. I mainly look at range. Is there anything else I should be looking at?</p><p>Scois</p>
Scios: Ahem- although that board at http://www.ebay.com.au/itm/1Pcs-3Km-433Mhz-Sx1278-Lora-Long-Distance-Wireless-Data-Transmission-Module-Ic-S-/302134571083?hash=item46589fb04b:g:RScAAOSw44BYJH22 is billed as &quot;LoRa&quot; I seriously doubt it! Semtech LoRa products are 7 pins aside &amp; labelled Semtech/SX or HopeRf (2nd sourced). That &quot; 8 a side&quot; chip looks an STM micro. The sockets imply some sort of stacking is needed for yet another board - which is probably actually an SPI LoRa module... <br><br>Range is appealing BUT so is reliability &amp; good data rates. Again I say you REALLY need to start simply (perhaps with HC-12) &amp; gain 433 MHz experiences. Folks can waste SO MUCH TIME &amp; MONEY otherwise<br><br>I also again point out that NZ/Aus 433 MHz regs allow ONLY 25 mW (milliWatts) transmitter power.<br><br>WHAT EXACTLY ARE YOU TRYING TO DO WITH THIS RADIO GEAR, WHERE (city/rural etc) &amp; WHAT BUDGET ???? Stan..
<p>I've got a few HC-12's on order and start with them once they arrive.</p><p>My objective: My cousin is a cattle farmer, on a 8000 hectare property in outback Queensland. Every few days he has to spend hours (and 10's of km's) driving between the various water points, checking water levels. A few sensors and a RF network will save him a lot of time and money. </p><p>I am looking at something similar to Dr. Acula's &quot;Simple Arduino Wireless Mesh&quot; network. My biggest obstacle is distance. There is 20km distance between the furthest drinking point and the homestead. </p><p>I want to keep is as simple as possible. I.e Sensor(s) --&gt; RF network --&gt; &quot;base&quot; station (LCD display with alarm). My biggest challenge is the RF (distance) network.</p><p>Scois</p>
<p>Hi,</p><p>At the time of writing this article, you seemed quite fond of the Dorji DRF1278DM module. Is this still the case? Later on you mention HopeRF as well?</p><p>I am playing around with a Modtronix SX1278 module. I uses SPI connections which I found a bit complicated. I hope something like the Dorji, with its TTL connection will make my life a bit easier.</p>
<p>There is PICAXE, MicroMiteII and Arduino code for SPI LoRa modules such as the DRF1278F and RFM98 to be found here;</p><p><a href="http://goo.gl/zrIsJD" rel="nofollow">http://goo.gl/zrIsJD</a></p><p>The PICAXE code is a complete program for a High Altitude Balloon tracker with two way command and control. The Trackers GPS location is sent and received as LoRa data and FSK RTTY.</p><p>There are Eagle files for a simple RFM98 Shield as well.</p><p>Stuart Robinson</p><p>GW7HPW<br></p>
<p>Link is dead smet, can you repost? Also do you have something for the DRF1278DM the pinouts are different and I can't seem to change them on the arduino libraries...</p>
<p>Trying to get the link changed, it did expire because of some issue on Dropbox a while back. </p><p>I don't have any code for the DRF1278DM, its a completely different hardware interface to the DRF1278F and RFM98 that my code was for. </p>
<p>did you manage to get the link changed?<br>i'm looking for code and/or cad files for DRF1278F</p>
<p>No, it was not possible to change the link. </p><p>If you look on my website on the links page, there is a link to a dropbox with code and other stuff;</p><p><a href="http://www.loratracker.uk/" rel="nofollow">http://www.loratracker.uk/</a></p><p>Note that there is no code for the DRF1278F specifically, both that and the Hope RFM98 modules use the Semtech SX127x LoRa devices, so the code is written for that IC. </p>
<p>Ok thanks anyways.</p>
<p>That is A B or C grade silicon.</p><p>Intel A , Amd A/B , Via C Processors for example</p>
<p>The hopeRF modules are semtech factory seconds, they didn't meet the A grade standard.</p>
Hi,guys,<br>I made a new instructable about &quot;How to get sensor data from a remote Arduino via Wireless Lora Protocol&quot;
<p>The link is <a href="https://www.instructables.com/id/How-to-Get-Sensor-Data-From-a-Remote-Arduino-Via-W/">https://www.instructables.com/id/How-to-Get-Sensor-Data-From-a-Remote-Arduino-Via-W/</a></p><p>Thanks</p>
<p>There,i made a LoRa/GPS HAT: <a href="http://wiki.dragino.com/index.php?title=Lora/GPS_HAT">http://wiki.dragino.com/index.php?title=Lora/GPS_HAT</a></p>
<p>While trying to configure DRF1278DM with the USB adapter I can't even open the programm it just ends with this error:</p><p>&quot;&quot;Error reading suiNumberEdit_RfFrequency-&gt; Text: '434:000' is not a valid floating point value!&quot;</p><p>Does anyone know why this happens?</p>
<p>Here's more on LoRa&trade; modulation</p><p>=&gt; <a href="https://revspace.nl/DecodingLora" rel="nofollow">https://revspace.nl/DecodingLora</a></p><p> =&gt; <a href="http://www.semtech.com/images/datasheet/an1200.22.pdf" rel="nofollow"> http://www.semtech.com/images/datasheet/an1200.22...</a></p>
<p><strong>November 2015 update</strong>: LoRa&trade; is rapidly gaining legs, and gateways using LoRaWAN&trade; are being rolled out.</p><p>Check news of one in Australia =&gt; <a href="http://www.zdnet.com/article/telstra-to-trial-lorawan-iot-wireless-technology-in-melbourne/" rel="nofollow"> http://www.zdnet.com/article/telstra-to-trial-lor...</a> <br><br>Here's another in India =&gt; <a href="http://www.businesswire.com/news/home/20151105005436/en/Semtech-Tata-Communications-Partner-Build-Internet-Network" rel="nofollow"> http://www.businesswire.com/news/home/20151105005...</a><br><br>Here in NZ an inner Wellington firm is doing great stuff with a LoRaWAN&trade; gateway at 868MHz. (This NZ legal frequency also allows higher power). See =&gt; <a href="http://www.kotahi.net" rel="nofollow">http://www.kotahi.net</a> and <a href="http://www.kerlink.fr/en/" rel="nofollow"> http://www.kerlink.fr/en/</a></p>
<p>Hi, why do you think that the for LoRa required range of 863 - 870 MHz is legal ? It only would be compliant if there is no use above 868. The band 868 - 870 MHz has a restriction of -27dBW. It is not possible to restrict the use of LoRa below 868 MHz. This would not be in accordance to the existing LoRa standards.</p><p><a href="http://thethingsnetwork.org/wiki/LoRaWAN-Frequencies" rel="nofollow">http://thethingsnetwork.org/wiki/LoRaWAN-Frequencies</a></p><p>The same applies for European equipment for wireless M-Bus. A compliance request to RSM regarding 868 was rejected. The -27dBW (2mW) does not allow a decent operation for a wireless network.</p><p>The conclusion for me is that the 863-870 MHz band can't be used in NZ. Same allies for AUS. </p><p>Regards Michael</p>
<p><strong>Michael:</strong> NZ/US/EU/AUS indeed have differing, changing (RSM have just tweaked NZ's!) &amp; perhaps confusing 800-900 MHz ISM spectrum spots &amp; power allowances. That quoted -27dBW is only a puny 2mW - I recall 27 dBm (which = a beefy 500mW of course) is allowed somewhere sub 1 GHz!?<br><br>In any case all my LoRa&trade; work has been done on the 433 MHz ISM spectrum slice, at NZ/Aus.legal 25mW (=14 dBm = -16 dBW) transmitters.<br><br>As it looks as if you are also in NZ, check the work of Wellington IoT firm running LoRa&trade; on~868 MHz (?) at what's thought to be 500mW TX =&gt; <a href="http://www.kotahi.net" rel="nofollow"> http://www.kotahi.net </a> and <a href="http://www.kerlink.fr/en/" rel="nofollow"> http://www.kotahi.net </a></p><p>Regards- Stan.</p>
<p>Dec 2015: LoRa&trade; uptake continues-</p><p>Schneider Electrical=&gt; <a href="http://www.businesswire.com/news/home/20151210005286/en/Semtech-LoRa%C2%AE-Technology-Selected-Schneider-Electric-Generation" rel="nofollow"> http://www.businesswire.com/news/home/20151210005...</a></p><p>Volcano monitoring =&gt; <a href="http://www.businesswire.com/news/home/20151208005439/en/Semtech-LoRa%C2%AE-Technology-Japan-Monitor-Active-Volcanoes" rel="nofollow"> http://www.businesswire.com/news/home/20151208005...</a></p>
<p>Swiss based MiroMico has helped develop a SX1272 LoRa&trade; based TBS (Team Black Sheep) Crossfire R/C model long range control system. See =&gt; <a href="http://www.getfpv.com/tbs-crossfire-tx-long-range-r-c-link.html" rel="nofollow">http://www.getfpv.com/tbs-crossfire-tx-long-range-r-c-link.html</a></p><p><br>Performance has been astounding - using 800-900 MHz links TBS flew out to 20 km distance using only 10mW transmitter power, while at (legally higher) 1.2W power 100km has been reached!</p>
<p>Glad you found it helpful! My Instructable dates from mid 2014 when I was getting to know it myself,&amp; I'd maybe now take a slightly different slant &amp; focus on HopeRF rather than Dorji etc.<br><br>My intention however was to show Lora&trade; is quite easy to explore AND it indeed measures up to the hype with astounding performance! Here in NZ an inner Wellington firm is doing great stuff with a LoRaWAN&trade; gateway at 868MHz. See =&gt; kotahi.net/ and <a href="http://www.kerlink.fr/en/" rel="nofollow">www.kerlink.fr/en/</a></p>
<p>Thank you for writing this up. Information on LoRa is still hard to comprehed, with all the available options.</p>
<p>I would like to know if LoRa protocol is based on IEEE 802.11 or IEEE802.15 or other protocols? In addition, what is LoRa's power saving solution?</p><p>Many thanks for help! </p>
<strong>Sandywulala</strong>: As Lora&trade; is their baby you'd really have to ask Semtech about this! Don't forget that Google is your friend too&nbsp; ...<br> <br> Those IEEE standards you mention are of course WiFi &amp; Bluetooth at 2.4GHz &amp; intended for nearby &amp; &quot;rapid&quot; data comms.&nbsp; LoRa&trade; modulation&nbsp; is used at much lower freqs, usually around 434 &amp; 868 MHz, &amp; is best suited for S-L-O-W data exchange but over large distances ( km - 10s of km) using very lower power transmitters &amp; super sensitive receivers.<br> <br> Regards- Stan.
<p><em>Zootalaws</em>: It is indeed buried at Dorji's site! The config tool is listed (near bottom RHS &quot;Resources&quot; column) as <strong>DRF_Tool_DRF1278D.rar</strong> ) at this link =&gt;</p><p><a href="http://www.dorji.com/pro/RF-module/Medium_power_tranceiver.html" rel="nofollow">http://www.dorji.com/pro/RF-module/Medium_power_tranceiver.html</a></p><p>Maybe also check the diverse insights (especially P. 9 -10) into it's use and USB adapters etc .<a href="http://www.dorji.com/docs/app/ADW1014_Testing_Data_Radio_Modem_With_Serial_Port_Tool.pdf" rel="nofollow">http://www.dorji.com/docs/app/ADW1014_Testing_Data_Radio_Modem_With_Serial_Port_Tool.pdf</a></p><p>FWIW we found direct config., although a tad tedious, had appeal as tweaks could be done on the fly via ones software. Under PICAXE control (in our case) we usefully stepped the output power as an aid to location distance of the transmitter. <br></p><p>Hope these help ! Stan.<br></p>
<p>I recently received my LoRa modules from Dorji (DRF1278DM), but cannot find the application you referred to that allows configuration.</p><p>Can you post a link? </p>
<p>Another Appcon based LoRa&trade; Instructable has also just popped up - see =&gt;<a href="https://www.instructables.com/id/GOING-BEYOND-THE-HORIZON-WITH-LoRa-RF1276/" rel="nofollow">https://www.instructables.com/id/GOING-BEYOND-THE-HORIZON-WITH-LoRa-RF1276/</a></p>
<p>Microchip's versatile <strong>RN2483 </strong> EU compilant 434/868MHz LoRa&trade; module (US$10-$15) is now in production. Their 10/10 claims (being a 10 mile surburban range &amp; 10 year battery life) may well be justified ! See</p><p>=&gt; <a href="http://ww1.microchip.com/downloads/en/DeviceDoc/50002346A.pdf" rel="nofollow">http://ww1.microchip.com/downloads/en/DeviceDoc/50002346A.pdf</a></p><p>=&gt; <a href="http://www.microchip.com/wwwproducts/Devices.aspx?product=RN2483" rel="nofollow">http://www.microchip.com/wwwproducts/Devices.aspx?product=RN2483</a></p>
<p>This LoRa&trade; based remote from Shenzhen Kelvin ( =&gt; <a href="http://szklvn.en.alibaba.com" rel="nofollow">http://szklvn.en.alibaba.com</a>/) could suit niche applications. Ranges of ~6km are claimed</p>
<p>Local graphical wizard Barney &quot;OhmArt&quot; Walker has just contributed this lucid insight into LoRa&trade;'s superior target hitting ability. Ms Lora looks a clear winner beside narrow band <strong>Iota </strong>! (Pun - IoT = Internet of Things)</p><p> Check Barney's lucid e-cartoons =&gt; <a href="https://ohmart.wordpress.com/details/" rel="nofollow">https://ohmart.wordpress.com/details/</a></p>
<p>WOW, right over my head.. But I want to learn more, this looks like cool stuff.</p>

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