Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [gprs]

General Radio Packet Service, is a protocol to transfer data on 2g and 3g cellular networks.

GPRS or General Packet Radio Service is the packet switch method implemented to used over GSM, in order to transmit greater amounts of data. It's also known as 2.5G.

GPRS Wikipedia article

52 questions
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AT Commands to transmit data through TCP/IP stack with LTE network

I need to design an embedded sotfware that will drive a LTE cellular device (like u-Blox TOBY L2 Series) and its TCP/IP stack to transmit some data toward a distant server. I'm waiting for the device to be delivered at work. For now, I use a GPRS…
Bikemat
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GSM/GPRS antenna noise depending on cable length and position

A board I designed has a noise problem that is caused by an onboard GSM/GPRS module (the Quectel M66 [1]). This module is connected to a Siretta Delta 2C [2] dipole antenna via 20cm coax cable. The image below shows the layout around the GPRS…
user147629
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Help to understand/ explore small sized 3G and GPS Antenna Design

I recently came across an exciting device called Automile, from Sweden and what caught my eye is this - I am really impressed by the packaging and overall quality of hardware integration they have done, and especially the 3G and GPS antennas that…
Pudi
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SIM900 Error on AT Command AT+SAPBR=1,1

I intend to send some information through GET method to a php page using the SIM900 module. I tried the following sequence of commands with…
Sergio
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Metal detector vs ground penetrating radar (GPR) frequencies

I was reading about metal detectors and at first got thinking they use lower frequencies because of ground/rock losses. Low frequencies will penetrate better, but seeing GPRs penetrating much deeper and using much higher frequencies got me wondering…
Ron Vaisman
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GSM Module gets into reboot loop

I have assembled a diy m590e gsm gprs module kit, bought from Amazon. The seller provided image is: The Schematic used to assemble the kit is: I connected it to the Laptop using a CP2102 based USB to TTL converter: GSM Module CP2102 Module …
Aniruddha Sarkar
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SIM900 Conducted Emissions Fail

I'm currently having trouble getting a product through EMC. Radiated emissions were comfortably under the limit, but conducted are failing badly. Here are the results: The noise appears to be largely common mode, with the exception of the first few…
Skov
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Posting to php server using SIM900 GPRS with AT commands

I am using a SIMCOM SIM900 GSM/GPRS module in an embedded hardware application. Rather than sending device data to a server by SMS (what I've been doing so far) I want to switch and start using GPRS to post data to a server with a PHP script I've…
LShaver
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SIM800 doesn't give GSM location

I have problem to get exact GSM location using SIM800L. I have followed instructions in the manual. But my module just gived me latitude = 0 and longitude = 0. This is what I do with my serial…
SkyFrotza
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Getting GPS coordinates with GPRS/GSM module

I'm trying to understand if I can get GPS coordinates using only a GPRS/GSM module. Probably I can do it by triangulation using BTS on the terrain and based on the RF signal but is that possible? Where do you think I can get info to guide me in that…
scuba
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First pin problem

Is this pin first pin of Quectel L76 ? Im confused with this :
yeganehhp
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GSM noise from a 2-layer PCB with SIM800C

I've designed a 2-layer PCB that contains a 12-5V buck converter (P2576L-50 - a Clone of the LM2576), 3.3 (AP1117-33) and 4V (MIC29302WU) shunt regulators, an STM32 micro and a SIM800C GSM module. The board has 4 connections to another board, where…
Inquisitive Engineer
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How to send HTTP parameters using POST method and SIM908 GPRS

I want to send HTTP parameters using POST method through SIM908 GPRS. Here is and example of what I want to send: POST /path/... HTTP/1.1 User-Agent: SIMCOM_MODULE Host: website_name Content-Type: application/josn; charset=utf-8 Content-Length:…
Arghavan Mohammadhassani
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PIC24FJ128GA202 UART2 and UART3 not working?

I am working in pic24fj128ga202 microcontroller with L80 and M95 module. here L80 module connected with uart2 and M95 module connected with uart3. now uart1 working normally but uart2 and uart3 not working (i.e) I didn't get gps and gprs data .below…
arun
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Modem to Modem via GPRS

I am working on a GPRS communication design. What I want to do to connects two modems together via GPRS. But I found that i could not connect. I was able to connect both modems to the internet using TCP connection AT Commands, and able to establish…
Paul A.
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