Easy IoT is a simplest IoT Solution presented by DFRobot
#44232
Hello,

I am using the SIM7000E module to connect an arduino to the LTE network.
My program works when I run it at a friend's home but not at my home.
I have already tested with several operator but the result is identical.
For some reason that escapes me, the module does not attach with the GSM antenna near my home.

!...! for sending to module
[...] for reception from the module


20:53:27.761 -> [CFUN:1]
20:53:27.927 -> [CPIN:READY]
20:53:28.027 -> [SMS Ready]
20:53:28.027 -> !AT+IPR=19200!
20:53:28.193 -> [AT+IPR=19200]
20:53:28.226 -> [OK]
20:53:28.226 -> !AT+CSTT="free"!
20:53:28.392 -> [AT+CSTT="free"]
20:53:28.425 -> [OK]
20:53:28.425 -> !AT+CLTS=1!
20:53:28.558 -> [AT+CLTS=1]
20:53:28.591 -> [OK]
20:53:29.023 -> !AT+CGATT=1!
20:55:50.398 -> [AT+CGATT=1]
20:55:50.465 -> [ERROR]

Here are the frequencies available on my antenna.

Bouygues

ID : 1797494
Date : 2019-03-08
Modification : 2019-03-08
Activée : Oui
Hauteur : 32.80 m
UMTS 880.1 à 889.9 MHz
UMTS 925.1 à 934.9 MHz


Free mobile

ID : 1674729
Date : 2018-05-18
Modification : 2019-12-27
Activée : Oui
Hauteur : 34.50 m
FH 17.7 à 18.1 GHz
UMTS 899.9 à 904.9 MHz
UMTS 944.9 à 949.9 MHz
LTE 723 à 733 MHz
LTE 778 à 788 MHz


Orange

ID : 1776197
Date : 2019-01-18
Modification : 2020-01-06
Activée : Oui
Hauteur : 32.80 m
UMTS 889.9 à 899.9 MHz
UMTS 934.9 à 944.9 MHz
LTE 811 à 821 MHz
LTE 852 à 862 MHz


SFR

ID : 1776094
Date : 2019-01-18
Modification : 2019-11-15
Activée : Oui
Hauteur : 32.80 m
UMTS 904.9 à 914.9 MHz
UMTS 949.9 à 959.9 MHz
LTE 801 à 811 MHz
LTE 842 à 852 MHz


Can you tell me why I can't attach the module?

Thx