# LPS8 and LDS03A - Range **URL:** \ **Category:** Dragino Gateways\ **Created:** [October 6, 2022, 1:42pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221 "2022-10-06T13:42:56Z")\ **Posts on this page:** 20\ **Page:** 4
**Author:** ![kersing](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/kersing/32/44777_2.png) [@kersing](https://www.thethingsnetwork.org/forum/u/kersing)\ **Post date:** [October 10, 2022, 8:20pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/61 "2022-10-10T20:20:24Z")
The gateway connector is damaged. Best way forward is to replace it because this is going to stay an issue. ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 10, 2022, 8:26pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/62 "2022-10-10T20:26:35Z")
I’d bet you’re right. I may just order a new in the box lps8 and go from there. At least I’ll know if it was ever ran without the antenna etc by me and it should be in a known good state new. I’ll report back with updates. Thanks again - you guys have been FANTASTIC in helping me troubleshoot this. ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 6:16pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/63 "2022-10-20T18:16:03Z")
ok - reporting back in - I ordered a brand new lps8 - got it in - exact same problem (and I made sure not to run it without the antenna mounted). So I assumed then it had to be a bad lds03a sensor unit - dragino agreed and sent me a brand new one which arrived last night. Still have very low rssi this morning with all new equipment - aka - no change with everything new. Curious…I run Ruckus wifi aps for my wifi - I can assume these should have no bearing on rssi - but asking for grins. I also run a zwave network here (which is pretty extensive) - could it be interfering? Otherwise - I’m lost. I don’t understand why rssi is always in the -120’s to -130’s even when the lps8 is one room over from me (like 10’ or so) - I have not programmed anything on the LDS03A - just plugged it in and let it register this morning. The lps8 is using 915 - band 2 I think. Anything in the setup I should look at - I feel like I’ve ruled out bad equipment. Thanks again ahead of time for any help offered! ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [October 20, 2022, 6:23pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/64 "2022-10-20T18:23:58Z")
> [@vexter0944](#): > > The lps8 is using 915 - band 2 I think. Be sure! - Also just noticed **your node picture - look at the label** on the LoRaWAN module - big clue - possible to run off frequency as underlying chip tech will support - but one symptom is then much poorer signal strength as antenna & matching all wrong! (clue US915 also covers a much lower range of frequencies as well and guess where band 2 is!..) ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 6:37pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/65 "2022-10-20T18:37:17Z")
@Jeff-UK - I’m a tad lost by your response - I follow to a point but not 100% I’m including the join request from the new unit - does this help determine the sub band? - - frequency:905300000 - modulation:“LORA” - ▶ loRaModulationInfo:{} 4 keys \* bandwidth:125 \* spreadingFactor:10 \* codeRate:“4/5” \* polarizationInversion:false - dr:0 ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [October 20, 2022, 6:43pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/66 "2022-10-20T18:43:39Z")
Under software control you have instructed the node to use the lower Band 2 - which the Semtech device can support no issue - the problem is your node is actually likely for the AS/AU923 or AU915 band - and will have its antenna matching components, and likely the ant itself optimised for 915-923… TX/Rx efficiency will be much impaired - but not impossible - at 905.3Mhz - likely \>40-60+ db down on where it should be. You hardware doesnt match what the application is trying to do! Sorry… ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/5/0/50121de7fc904ff2255df4cc574b7f5a8e2b7415.jpeg) ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 6:47pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/67 "2022-10-20T18:47:46Z")
I think it should be the right model based on the box at least - unless the had the wrong unit in the box. ![20221020_134549](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/3/9/394ec1f822b980edbc4abf81e0a0adfd5da470a4.jpeg) ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [October 20, 2022, 6:51pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/68 "2022-10-20T18:51:05Z")
Mis packs, and even misconfigured builds, are not unknown in the industry! I bought a bunch of 868Mhz EU TTIG’s a while back and 1 just refused to work - box was correct, label on device was correct…only when I ripped apart and trashed it did I see a tiny SMD resistor on the edge of board showing 915 vs 868 config! S4!t happens 🙂 (Yes I got a refund!! 😉 ) ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 6:52pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/69 "2022-10-20T18:52:23Z")
@Jeff-UK - ok this is the cfg from the AT+CFG command: (blanks were removed by me like keys etc) It shows a US915 at least hardware wise. AT+DEUI=a8 40 41 2e 91 84 7e ec AT+DADDR=01 84 7e ec AT+APPKEY= AT+NWKSKEY= AT+APPSKEY= AT+APPEUI=a8 40 41 00 00 00 01 01 AT+ADR=1 AT+TXP=0 AT+DR=0 AT+DCS=0 AT+PNM=1 AT+RX2FQ=923300000 AT+RX2DR=8 AT+RX1DL=1000 AT+RX2DL=2000 AT+JN1DL=5000 AT+JN2DL=6000 AT+NJM=1 AT+NWKID=00 00 00 00 AT+FCU=0 AT+FCD=0 AT+CLASS=A AT+NJS=0 AT+RECVB=0: AT+RECV=0: AT+RJTDC=20 AT+RPL=0 AT+VER=v1.1 US915 AT+CFM=0 AT+CFS=0 AT+SNR=0 AT+RSSI=0 AT+TDC=7200000 AT+PORT=2 AT+RX1WTO=14 AT+RX2WTO=7 AT+PWORD=123456 AT+LEAPSEC=18 AT+SYNCMOD=1,0 AT+TTRMOD=0 AT+CALCFLAG=0 AT+DISALARM=0 AT+TTRIG=0,0 AT+MOD=1 AT+TIMESTAMP=2021-11-12 T00:21:28 AT+CHS=0 AT+CHE=0 Use default channel ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [October 20, 2022, 6:58pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/70 "2022-10-20T18:58:56Z")
Ok why you no listen! ? _That is just S/w and output from S/w_ - the device will do what you tell it to do and could be that though a 915-923 h/w build it was programmed/configured with US915 firmware it still wont work as a 905.3Mhz device with any efficiency - as evidenced by your abissmal RSSI figures…I would be inclined to go with the label on the module as likely a mis pick for the subsequent build of the node system - sorry can’t say/advise any more other than get it replaced with a known good/confirmed US915 device - possibly a cheap unit from an alternate manufacturer so you know we arent all going mad 🙂 ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 7:02pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/71 "2022-10-20T19:02:08Z")
lol - I promise I’m listening - steep learning curve here as I’m totally new to this. I can see about a different manufacturer for another node. Is there a recommended brand that everyone really likes? I’ll need a US915 node of course. Any help on sourcing will be much appreciated. Thanks again for all the help and hanging in there with me! ---
**Author:** ![Jeff-UK](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/jeff-uk/32/35697_2.png) [@Jeff-UK](https://www.thethingsnetwork.org/forum/u/Jeff-UK)\ **Post date:** [October 20, 2022, 7:04pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/72 "2022-10-20T19:04:54Z")
Actualy yes… Dragino! 🤣 we often recommend the cheap door sensors as a simple low cost device test operation! 🙂 forum search will yield many devices… ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 7:05pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/73 "2022-10-20T19:05:51Z")
So I picked Dragino and this is how it’s going to be - lol - I’ll do some digging for another device. Thanks as always! ---
**Author:** ![descartes](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/descartes/32/47220_2.png) [@descartes](https://www.thethingsnetwork.org/forum/u/descartes)\ **Post date:** [October 20, 2022, 7:42pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/74 "2022-10-20T19:42:29Z")
> [@vexter0944](#): > > I’ll do some digging for another device. The really tricky thing for a recommendation is not knowing what you have available. There’s plenty out there at a reasonable price, but if it’s in the EU or the Far East, the carriage may tip it in to ‘expensive’. So probably best for you to get a short list of what you can get locally and check back in here for a bit of a vote. ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 20, 2022, 7:47pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/75 "2022-10-20T19:47:06Z")
I ended up grabbing one of these. [LoRaWAN Door Sensor | Dragino LDS02 Helium | CHOOVIO USA](https://www.choovio.com/product/lds02-lorawan-door-sensor/) We’ll see where it goes. 🙂 ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 23, 2022, 2:21pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/76 "2022-10-23T14:21:48Z")
I got the LDA02 in yesterday - and setup - same results. I’ve been working with Dragino - they have looked at pics of both the LPS8’s I have (internal pics) as well as pics of the lds03a’s I have. They said the lps8’s look correct. I’ve tried turning off wifi, turning off my philips hue and my zwave network - no change. Rssi is still in the -120-130’s - see screenshot for the lda02 attached. ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/3/8/38370292c324249c4af9e37adbefe17e70fd1942.png) ---
**Author:** ![descartes](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/descartes/32/47220_2.png) [@descartes](https://www.thethingsnetwork.org/forum/u/descartes)\ **Post date:** [October 23, 2022, 3:13pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/77 "2022-10-23T15:13:41Z")
Time to take it somewhere way out of range of the other RF devices to eliminate any possibility of interference. ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 23, 2022, 3:22pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/78 "2022-10-23T15:22:14Z")
Agreed - I was thinking quite similarly. I’ll see if I can do that sometime today and report in. ---
**Author:** ![vexter0944](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/vexter0944/32/35697_2.png) [@vexter0944](https://www.thethingsnetwork.org/forum/u/vexter0944)\ **Post date:** [October 23, 2022, 5:34pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/79 "2022-10-23T17:34:36Z")
Ok I moved the lps8 to my barn (all wood sides - metal roof) - and took the lda02 with me to test. The barn is 30 by 30 - so I had the gateway on 1 side and the lda02 about 20’ from the lps8 - see results. No difference. 😕 The lps8 is setup for band 2 - just a quick note - ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/f/c/fc1610d051f20e99739118a11a515745957ec65b.png) ![image](https://www.thethingsnetwork.org/forum/uploads/default/original/3X/a/8/a8bde9c6858e4ee4e120b3a5a0fd2127a206daac.png) ---
**Author:** ![LoRaTracker](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/loratracker/32/48502_2.png) [@LoRaTracker](https://www.thethingsnetwork.org/forum/u/LoRaTracker)\ **Post date:** [October 23, 2022, 5:37pm UTC](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221/80 "2022-10-23T17:37:34Z")
An RSSI of -131 and an SNR of -12.8 sounds like very weak signals, long distance or poor or no antennas, faulty modules etc. If interferance was a major issue you might expect the SNR to be poor, but with a stronger RSSI. [Previous page](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221.md?page=3) [Next page](https://www.thethingsnetwork.org/forum/t/lps8-and-lds03a-range/59221.md?page=5)