# LoRaWAN Discussions **URL:** https://www.thethingsnetwork.org/forum/c/lorawan/lorawan-discussions/87.md [Latest](https://www.thethingsnetwork.org/forum/latest.md) · [Categories](https://www.thethingsnetwork.org/forum/categories.md) · [Tags](https://www.thethingsnetwork.org/forum/tags.md) --- ## [How widespread is each LoRaWAN version (1.0.2, 1.0.4, 1.1)?](https://www.thethingsnetwork.org/forum/t/how-widespread-is-each-lorawan-version-1-0-2-1-0-4-1-1/73969)
**Author:** [@loicferreira](https://www.thethingsnetwork.org/forum/u/loicferreira)\ **Replies:** 4\ **Last updated:** [July 24, 2026, 8:32am UTC](https://www.thethingsnetwork.org/forum/t/how-widespread-is-each-lorawan-version-1-0-2-1-0-4-1-1/73969 "2026-07-24T08:32:21Z")
Hi there! Does anyone known how popular and deployed is each LoRaWAN version? E.g. v1.0.2 is implemented by 70% of the end-devices, v1.0.4 by 15% and v1.1 by 15%? Any clue (and references) on that matter? Thanks a lot… --- ## [Don't see frames from device](https://www.thethingsnetwork.org/forum/t/dont-see-frames-from-device/72525)
**Author:** [@maratsaif](https://www.thethingsnetwork.org/forum/u/maratsaif)\ **Replies:** 2\ **Last updated:** [November 6, 2025, 4:53am UTC](https://www.thethingsnetwork.org/forum/t/dont-see-frames-from-device/72525 "2025-11-06T04:53:51Z")
I don’t see any frames in my web UI of LoRaWAN gateway (made by Ebyte): device settings: The region is same for gateway and device, however, no frame was received or transmitted: I tried to ask support … --- ## [Why is the LoRa chip rate equal to the bandwidth?](https://www.thethingsnetwork.org/forum/t/why-is-the-lora-chip-rate-equal-to-the-bandwidth/71090)
**Author:** [@ElectronicallyE](https://www.thethingsnetwork.org/forum/u/ElectronicallyE)\ **Replies:** 9\ **Last updated:** [April 16, 2025, 12:33am UTC](https://www.thethingsnetwork.org/forum/t/why-is-the-lora-chip-rate-equal-to-the-bandwidth/71090 "2025-04-16T00:33:47Z")
Please note: I acknowledge that this question is related to LoRa as opposed to The Things Network or LoRaWAN specifically, however I have spent a number of hours online researching this and cannot seem to find an answer.… --- ## [Using two gateways for single deive](https://www.thethingsnetwork.org/forum/t/using-two-gateways-for-single-deive/69985)
**Author:** [@glv13](https://www.thethingsnetwork.org/forum/u/glv13)\ **Replies:** 24\ **Last updated:** [April 4, 2025, 9:31pm UTC](https://www.thethingsnetwork.org/forum/t/using-two-gateways-for-single-deive/69985 "2025-04-04T21:31:10Z")
Hello everyone, If i am using two gateways for one device then i am recieving data on both gateways but on things network i am recieving data from that gateway for which i am getting better RSSI. If i want to recieve d… --- ## [Issues with LoRaWAN Downlinks on RA-08H Nodes](https://www.thethingsnetwork.org/forum/t/issues-with-lorawan-downlinks-on-ra-08h-nodes/70178)
**Author:** [@brip](https://www.thethingsnetwork.org/forum/u/brip)\ **Replies:** 7\ **Last updated:** [January 2, 2025, 1:10pm UTC](https://www.thethingsnetwork.org/forum/t/issues-with-lorawan-downlinks-on-ra-08h-nodes/70178 "2025-01-02T13:10:02Z")
Hardware Description Gateway: Model: LR1302 Chip: Semtech SX1302 and SX1250 Frequency Band: EU868 Platform: Raspberry Pi Node: Model: RA-08H on RP2040 Processor: Dual-core ARM Cortex M0+ at 133MHz Compatibility: C… --- ## [Downlink expectations](https://www.thethingsnetwork.org/forum/t/downlink-expectations/58485)
**Author:** [@stevensen](https://www.thethingsnetwork.org/forum/u/stevensen)\ **Replies:** 9\ **Last updated:** [December 28, 2024, 1:04pm UTC](https://www.thethingsnetwork.org/forum/t/downlink-expectations/58485 "2024-12-28T13:04:59Z")
Hey folks, we have a project to control irrigation valves. In the area of application we have the following setup: 3 Gateways (different manufacturers) in range 6 valve controllers (Class C end nodes) to open/close a … --- ## [Lora not joining for first attempt](https://www.thethingsnetwork.org/forum/t/lora-not-joining-for-first-attempt/68129)
**Author:** [@sainath](https://www.thethingsnetwork.org/forum/u/sainath)\ **Replies:** 7\ **Last updated:** [June 10, 2024, 9:15am UTC](https://www.thethingsnetwork.org/forum/t/lora-not-joining-for-first-attempt/68129 "2024-06-10T09:15:09Z")
Hi, I am using stm32wb5mmg with pico sx1262. When I am trying to make LoRa join through OTAA, it actually joins, but not on the first attempt. It takes 2 or 3 attempts to join OTAA initially. Can I know the reason or an… --- ## [No data reception, only join](https://www.thethingsnetwork.org/forum/t/no-data-reception-only-join/67880)
**Author:** [@dermerten](https://www.thethingsnetwork.org/forum/u/dermerten)\ **Replies:** 20\ **Last updated:** [May 14, 2024, 12:51pm UTC](https://www.thethingsnetwork.org/forum/t/no-data-reception-only-join/67880 "2024-05-14T12:51:37Z")
Hello, I am very doubtful right now, I am sending data with LoRaWAN, Heltec ESP v3, via TTN Gateway, but it only comes that it join. I want to send data from DHT11 and from a load cell. below is my code and below is the … --- ## [Airtime calculator difference](https://www.thethingsnetwork.org/forum/t/airtime-calculator-difference/67420)
**Author:** [@tanguy-e](https://www.thethingsnetwork.org/forum/u/tanguy-e)\ **Replies:** 12\ **Last updated:** [March 31, 2024, 6:36pm UTC](https://www.thethingsnetwork.org/forum/t/airtime-calculator-difference/67420 "2024-03-31T18:36:39Z")
I can’t understand what’s difference between using https://www.thethingsnetwork.org/airtime-calculator : and using https://www.semtech.com/design-support/lora-calculator : Adding 13 bytes to the payload lengths a… --- ## [RAK 7258 (EOL) no longer working as expected. Antenna problems](https://www.thethingsnetwork.org/forum/t/rak-7258-eol-no-longer-working-as-expected-antenna-problems/67342)
**Author:** [@Loralyn](https://www.thethingsnetwork.org/forum/u/Loralyn)\ **Replies:** 1\ **Last updated:** [March 24, 2024, 4:25pm UTC](https://www.thethingsnetwork.org/forum/t/rak-7258-eol-no-longer-working-as-expected-antenna-problems/67342 "2024-03-24T16:25:38Z")
I have a RAK 7258 Wireless LoraWan Gateway laying around, used for testing some concepts. For that purpose it has served me well. Until now. Suddenly the signal strengt were dramatically reduced. I opened the unit and fo… --- ## [A potential Radiolib derived library for the Heltec ESP32 LoRa v3 board](https://www.thethingsnetwork.org/forum/t/a-potential-radiolib-derived-library-for-the-heltec-esp32-lora-v3-board/67117)
**Author:** [@rop](https://www.thethingsnetwork.org/forum/u/rop)\ **Replies:** 20\ **Last updated:** [March 8, 2024, 11:06am UTC](https://www.thethingsnetwork.org/forum/t/a-potential-radiolib-derived-library-for-the-heltec-esp32-lora-v3-board/67117 "2024-03-08T11:06:00Z")
I created a comprehensive library for those that would prefer to use the Heltec ESP32 LoRa v3 board with RadioLib. Working examples, no more figuring out which half-mandarin repo to use, everything easy-to-use and proper… --- ## [LoRaWAN packets in ns-3 simulation](https://www.thethingsnetwork.org/forum/t/lorawan-packets-in-ns-3-simulation/65898)
**Author:** [@yuksel12](https://www.thethingsnetwork.org/forum/u/yuksel12)\ **Replies:** 1\ **Last updated:** [December 30, 2023, 8:45pm UTC](https://www.thethingsnetwork.org/forum/t/lorawan-packets-in-ns-3-simulation/65898 "2023-12-30T20:45:56Z")
Hello, everyone. I’m new here and to LoRaWAN :slight\_smile: , i’ve been checking a simulated LoRaWAN network using ns-3 LoRaWAN module(GitHub - signetlabdei/lorawan: An ns-3 module for simulation of LoRaWAN networks) and… --- ## [LDS02 not joining - Range issue?](https://www.thethingsnetwork.org/forum/t/lds02-not-joining-range-issue/65976)
**Author:** [@jaguarg](https://www.thethingsnetwork.org/forum/u/jaguarg)\ **Replies:** 15\ **Last updated:** [December 17, 2023, 11:09pm UTC](https://www.thethingsnetwork.org/forum/t/lds02-not-joining-range-issue/65976 "2023-12-17T23:09:18Z")
Hi, I am a newbie. I got a LDS02 and I thought i could connect to a publicly available gateway on TTN. Unfortunately when adding the device to the portal. I get the following error: No activity yet { "time": "2023-1… --- ## [How reliable are downlinks?](https://www.thethingsnetwork.org/forum/t/how-reliable-are-downlinks/37737)
**Author:** [@dajt](https://www.thethingsnetwork.org/forum/u/dajt)\ **Replies:** 70\ **Last updated:** [November 30, 2023, 3:02pm UTC](https://www.thethingsnetwork.org/forum/t/how-reliable-are-downlinks/37737 "2023-11-30T15:02:15Z")
I’m developing an application to control a water pump. My dev setup is: A Multitech Conduit gateway that uses the mobile phone network to talk to the internet; A Feather M0 915 node; The MCCI LMIC library, and the as92… --- ## [Try to join, no answer](https://www.thethingsnetwork.org/forum/t/try-to-join-no-answer/36526)
**Author:** [@alemino](https://www.thethingsnetwork.org/forum/u/alemino)\ **Replies:** 8\ **Last updated:** [November 6, 2023, 10:52am UTC](https://www.thethingsnetwork.org/forum/t/try-to-join-no-answer/36526 "2023-11-06T10:52:24Z")
Hello, pretty new here discovering LoRa. My setup is follow: raspberry with a PiSupply LoRa node pHat, outdoor on my balcony Where i do live (zurich) according TTN map there should be more gateway covering my area. W… --- ## [LILYGO TTGO Meshtastic T-Beam LoRa 868Mhz with TTN](https://www.thethingsnetwork.org/forum/t/lilygo-ttgo-meshtastic-t-beam-lora-868mhz-with-ttn/65120)
**Author:** [@shirwan](https://www.thethingsnetwork.org/forum/u/shirwan)\ **Replies:** 8\ **Last updated:** [October 11, 2023, 9:44am UTC](https://www.thethingsnetwork.org/forum/t/lilygo-ttgo-meshtastic-t-beam-lora-868mhz-with-ttn/65120 "2023-10-11T09:44:38Z")
Hi I am new to LoRaWAN and TTN. I have set up my Kerlink Wirnet iFemtoCell, and it is connected to TTN. I am using the LILYGO TTGO Meshtastic T-Beam LoRa 868Mhz as an end device, with the latest esp32 firmware ‘v1.21.0 … --- ## [Is rejoining in new rejoins necessary?](https://www.thethingsnetwork.org/forum/t/is-rejoining-in-new-rejoins-necessary/64716)
**Author:** [@Jakub\_Nagy](https://www.thethingsnetwork.org/forum/u/Jakub_Nagy)\ **Replies:** 5\ **Last updated:** [September 11, 2023, 2:02pm UTC](https://www.thethingsnetwork.org/forum/t/is-rejoining-in-new-rejoins-necessary/64716 "2023-09-11T14:02:15Z")
Hey everyone, we have a device which can successfully work in most different LoRaWAN regions. How it works is that the device hardware is tuned to the 729-960MHz range (it won’t work well in the CN470 region). When the … --- ## [\-2 Error With SenseCap Lorawan S2100 Data Logger](https://www.thethingsnetwork.org/forum/t/2-error-with-sensecap-lorawan-s2100-data-logger/63410)
**Author:** [@Plantible\_Foods](https://www.thethingsnetwork.org/forum/u/Plantible_Foods)\ **Replies:** 0\ **Last updated:** [June 8, 2023, 11:37pm UTC](https://www.thethingsnetwork.org/forum/t/2-error-with-sensecap-lorawan-s2100-data-logger/63410 "2023-06-08T23:37:33Z")
Hello, I am having an issue with a Lorawan S2100 Data Logger with a PAR sensor attached where I get a -2 error which is triggered by the payload message being the incorrect length. I believe it is due to the payload for… --- ## [Spectrum analyser on EU 868 MHz](https://www.thethingsnetwork.org/forum/t/spectrum-analyser-on-eu-868-mhz/33039)
**Author:** [@cultsdotelecomatgmai](https://www.thethingsnetwork.org/forum/u/cultsdotelecomatgmai)\ **Replies:** 13\ **Last updated:** [March 16, 2023, 7:47pm UTC](https://www.thethingsnetwork.org/forum/t/spectrum-analyser-on-eu-868-mhz/33039 "2023-03-16T19:47:36Z")
I recently bought an RF explorer http://rfexplorer.com/ handheld spectrum analyser to get a better look at the normal EU LoRaWAN channel lineup and to measure the noise floor and potential interference during site survey… --- ## [Sub-band handling for LoRaWAN EU868 Band](https://www.thethingsnetwork.org/forum/t/sub-band-handling-for-lorawan-eu868-band/61706)
**Author:** [@cameronkordy](https://www.thethingsnetwork.org/forum/u/cameronkordy)\ **Replies:** 9\ **Last updated:** [March 2, 2023, 10:39am UTC](https://www.thethingsnetwork.org/forum/t/sub-band-handling-for-lorawan-eu868-band/61706 "2023-03-02T10:39:40Z")
Is anyone here familiar with the LoRaWAN on TTN and the EU868 band? I am trying to figure out how to modify the sub-band it operates on. By default, it appears that the JOIN\_REQUEST message returns a value which sets the… --- ## [Limiting the number of bytes on the uplink](https://www.thethingsnetwork.org/forum/t/limiting-the-number-of-bytes-on-the-uplink/60424)
**Author:** [@lafourcade](https://www.thethingsnetwork.org/forum/u/lafourcade)\ **Replies:** 30\ **Last updated:** [December 16, 2022, 12:26pm UTC](https://www.thethingsnetwork.org/forum/t/limiting-the-number-of-bytes-on-the-uplink/60424 "2022-12-16T12:26:12Z")
I’m using a wl55jc1 ST demo board for development and I’m testing an example end node. I am using port 12 DR2 and acknowledgment in the packet. My payloads are limited to 8 bytes of data. If I try to send more than that … --- ## [DevEUI and AppKey inside packet-forwarder (payload structure)](https://www.thethingsnetwork.org/forum/t/deveui-and-appkey-inside-packet-forwarder-payload-structure/59950)
**Author:** [@sergorl](https://www.thethingsnetwork.org/forum/u/sergorl)\ **Replies:** 6\ **Last updated:** [November 14, 2022, 12:19pm UTC](https://www.thethingsnetwork.org/forum/t/deveui-and-appkey-inside-packet-forwarder-payload-structure/59950 "2022-11-14T12:19:31Z")
Hello, guys. I work with packet-forwarder and wonder about structure of payload here: struct lgw\_pkt\_rx\_s { uint32\_t freq\_hz; /\*!\> central frequency of the IF chain \*/ uint8\_t if\_chain; /\*!\> … --- ## [Why TTN call the user payload a "MAC Payload"?](https://www.thethingsnetwork.org/forum/t/why-ttn-call-the-user-payload-a-mac-payload/56071)
**Author:** [@montagny](https://www.thethingsnetwork.org/forum/u/montagny)\ **Replies:** 1\ **Last updated:** [October 24, 2022, 6:13pm UTC](https://www.thethingsnetwork.org/forum/t/why-ttn-call-the-user-payload-a-mac-payload/56071 "2022-10-24T18:13:58Z")
Hi all, The MAC Payload is defined by the LoRaWAN specification and consists of a frame header (FHDR) followed by an optional port field (FPort) and an optional frame payload (FRMPayload). The Frame Payload (FRMPayload)… --- ## [At what point does NwkSKey and AppSKey expire?](https://www.thethingsnetwork.org/forum/t/at-what-point-does-nwkskey-and-appskey-expire/59193)
**Author:** [@ridgerunnersjw](https://www.thethingsnetwork.org/forum/u/ridgerunnersjw)\ **Replies:** 1\ **Last updated:** [October 5, 2022, 5:49pm UTC](https://www.thethingsnetwork.org/forum/t/at-what-point-does-nwkskey-and-appskey-expire/59193 "2022-10-05T17:49:17Z")
I have been doing much reading regarding Lora / Lorawan but I do not really see what defines a session…Can someone clarify what defines the time length of a session? If end node needs to re-join is this considered the s… --- ## [What frequency to use in Sweden?](https://www.thethingsnetwork.org/forum/t/what-frequency-to-use-in-sweden/36714)
**Author:** [@TD-er](https://www.thethingsnetwork.org/forum/u/TD-er)\ **Replies:** 11\ **Last updated:** [July 20, 2022, 11:01am UTC](https://www.thethingsnetwork.org/forum/t/what-frequency-to-use-in-sweden/36714 "2022-07-20T11:01:56Z")
For the project I’m still working on (ESPEasy controller using TTN-LoRaWAN) I had sent a few units to a friend of mine who lives in Sweden, along with a number of TTIG units to get started. But then we read about the fr… --- ## [Same ping slot scheduling conflict for Class B devices](https://www.thethingsnetwork.org/forum/t/same-ping-slot-scheduling-conflict-for-class-b-devices/57759)
**Author:** [@marianofino](https://www.thethingsnetwork.org/forum/u/marianofino)\ **Replies:** 1\ **Last updated:** [June 27, 2022, 5:29pm UTC](https://www.thethingsnetwork.org/forum/t/same-ping-slot-scheduling-conflict-for-class-b-devices/57759 "2022-06-27T17:29:43Z")
Hello, I am struggling to understand what happens if a Network Server has to send a new downlink message to 2 different Class B devices that share the same ping slot with the same gateway. I know that it’s unlikely that … --- ## [Acknowledging uplink packets in LoRaWAN class B](https://www.thethingsnetwork.org/forum/t/acknowledging-uplink-packets-in-lorawan-class-b/56419)
**Author:** [@Chekra](https://www.thethingsnetwork.org/forum/u/Chekra)\ **Replies:** 5\ **Last updated:** [April 12, 2022, 1:39pm UTC](https://www.thethingsnetwork.org/forum/t/acknowledging-uplink-packets-in-lorawan-class-b/56419 "2022-04-12T13:39:29Z")
For LoRaWAN class B, is it possible to acknowledge uplink confirmed packets in class B ping slots? or it should be in RX1/RX2 class A receive windows? It seems to me that ping slots in class B are reserved for network-in… --- ## [Lora Class C Transmission Rate](https://www.thethingsnetwork.org/forum/t/lora-class-c-transmission-rate/55872)
**Author:** [@sudeozan](https://www.thethingsnetwork.org/forum/u/sudeozan)\ **Replies:** 22\ **Last updated:** [March 16, 2022, 2:45pm UTC](https://www.thethingsnetwork.org/forum/t/lora-class-c-transmission-rate/55872 "2022-03-16T14:45:46Z")
Hello, i searched and looked it up if it is possible but couldn’t find anything specific. I bought LSN50V2 end node and I will use it in class C mode. I need it to send data every 500ms. Does lora C class provide that mu… --- ## [RAK2247 how to modifiy or change SPI port (GPIOs) in raspberry pi4 (ChirpStack)](https://www.thethingsnetwork.org/forum/t/rak2247-how-to-modifiy-or-change-spi-port-gpios-in-raspberry-pi4-chirpstack/55600)
**Author:** [@net\_LoRa\_2020](https://www.thethingsnetwork.org/forum/u/net_LoRa_2020)\ **Replies:** 4\ **Last updated:** [March 4, 2022, 8:42am UTC](https://www.thethingsnetwork.org/forum/t/rak2247-how-to-modifiy-or-change-spi-port-gpios-in-raspberry-pi4-chirpstack/55600 "2022-03-04T08:42:51Z")
Hello all, I want to connect my RAK2247 to the SPI6 port of my Raspberry Pi 4 witch has 6 SPI ports. Can you help me to configure this choise of SPI, In which file should I access to change this configuration? I know th… --- ## [Which gateway will be choosen for transfering packet](https://www.thethingsnetwork.org/forum/t/which-gateway-will-be-choosen-for-transfering-packet/54273)
**Author:** [@Roberto69](https://www.thethingsnetwork.org/forum/u/Roberto69)\ **Replies:** 20\ **Last updated:** [January 12, 2022, 10:29am UTC](https://www.thethingsnetwork.org/forum/t/which-gateway-will-be-choosen-for-transfering-packet/54273 "2022-01-12T10:29:08Z")
As Krishna Easwaran said in video Gateway Demo: LoRa Basics Station - Krishna Easwaran (Things Industries) & Anton Beitler (Semtech) - YouTube (at time 17.20) choosing relevant gateway depends on RSSI, SNR and other fact… [Next page](https://www.thethingsnetwork.org/forum/c/lorawan/lorawan-discussions/87.md?page=1)