RAK811/LoRa Module Latest information summary



  • @kenyu
    I use Dragino's LG01-P-JP for Gateway, which is with AS923.
    In LoRaWAN 1.0.2 Japan recognizes that it decided to use AS923.
    I am wondering if I can keep using it with 915 firmware.
    Is it OK to use it without worrying about it on 915 firmware?



  • @YuheiOKAWA Can you send out the list of frequency bands you use?



  • @Twenyong
    sorry, late reply.
    I re-read the document again,
    In my understanding, the Freq list looks like this
    923.2
    923.4
    922.2
    922.4
    922.6
    922.8
    923.0
    922.0

    (1mW < antenna power <= 20mW) && (920.6MHz <= center frequency <= 923.4MHz)

    There are materials that can be referred to in order to compensate for my understanding shortage.
    full regulation document is this link.
    http://www.arib.or.jp/english/html/overview/doc/5-STD-T108v1_0-E1.pdf



  • Can replace RAK811 by RN2903 of (microchip) ????????



  • May be can not ,we do not know much about RN2903



  • I tried the TheThingsNetwork library for the Arduino which uses the RN2903 and it is incompatible.



  • Hello evebody!
    I have some question about the power supply and current consumption of RAK811 module (sx1276 module + stm32l151). The datasheet "RAK811 Lora Module Datasheet V1.1" explain on the "Recommended Operating Rating" for VCC are: 3.15 V(min), 3.3V (typical) and 3.45 V(maximun); for the "Current Consumption" only the minimum consumption are descripted: 30 mA(14dbm) (tx mode), 5.5 mA (rx mode) and 7.2 uA (sleep mode) . For the other hand, the brochure of rak811 "RAK811_Brochure(V1.0).pdf" indicates TX: 60mA; RX: 9.9mA; Sleep: 500nA, with no identification of max, min, or tipic values. Wich really are the values min, tipic and maximun for RAK811? The documentation looks like some confuse to me.
    About the power consumption, sx1276 can work with 3.7V and stml151 with 4V of maximun values. Why rak811 does can't work with 3,7 v (the minimun value of the maximum vcc of this two chips)?
    The rak811 module have a regulator inside?
    @kenyu @rakadmin
    We must be know this values for comercial products.
    thanks!



  • Thank you for your question. We didn't write that we didn't try this way. Of course, if the user can try it, we will update the document.



  • hi @xc-c! On my tests, vcc for RAK811 modeule can around 2.0 to 3.65 v to send msgs and works fine.



  • Thank you very much for your testing, we will modify the documentation after verification.


Log in to reply
 

Looks like your connection to RAK Support Center was lost, please wait while we try to reconnect.