The DTMF signal is generated by a separated source, typically a landline (corded) phone, and sent to the input lines of the module (Uplink path). The frequencies couples, sent on the voice channel , are digitised, encoded and sent by the digital transmission system. In the receiving device the signal would be reconstructed, but since […]
Category: M2M FAQ, hints, tips
GSM module located by Timing advance
GSM module located by Timing advance TA. Example on TA combined with Angle of Arrival and analysing sector antennas http://ow.ly/14y7U 13.03.2010 Remark of the author after sending the tweet: I am working on a GSM based locating system that will cover 180 countries. The first GSM based locating I launched 10 years ago at World […]
Approval RTT&E EN 301489-1, EN 301489-7 & EN 301511
Approval RTT&E EN 301489-1, EN 301489-7 & EN 301511. Why to pay € 11437 if you can get it for € 4400 us well? Region Specification Euro Euro Euro Europe R&TTE Directive Article 3.1(b) EMC testing for a dualband GSM terminal device EN 301 489-1 & EN 301 489 -7 4000 2000 6500 Europe R&TTE […]
Low Power GPRS module in combination with Lithium-ion batteries that runs twice as long
Can you imagine what developer of wireless M2M applications can create with this combination? The time is right to combine it with latest antenna technology. I have something in my mind. I will come back and post it, as soon I hold this piece of the puzzle in my hands. A lot of products can […]
More Energy in Batteries. Nanowire anodes could let lithium-ion batteries run twice as long
More Energy in Batteries. Imagine the effect on GSM GPS tracking devices. A start-up based in Menlo Park, CA, plans to sell a new type of anode for lithium-ion batteries that, the company says, will let electric vehicles travel farther and mobile devices last longer without a recharge. Amprius‘ lithium-ion anodes are made of silicon […]
3G module with embedded TCP/IP, UDP/IP, FTP and SMTP client
3G module UMTS 900 module characteristics. 3G module Full Type Approved Embedded UMTS 900 Module with AT command and RS232 interface on CMOS level.
Telemedicine Market to Hit $3.6 Billion. This is 70%+ more within 5 years
Telemedicine Device Market to Reach $3.6 Billion According to New Study The market for telemedicine devices and services will generate $3.6 billion in annual revenue within five years, a new study claims. The study by the Silver Spring, Md.-based research firm Pike & Fischer, says mobile-services companies, such as AT&T, Verizon, Sprint and Nextel, will […]
2G / 3G PCB Antenna with coax connector U.FL, GSC, MMCX or any other coax connector
2G / 3G PCB Antenna with coax connector U.FL, GSC, MMCX or any other coax connector http://ow.ly/1bLDh
Embedded 2G / 3G Antenna Penta band
Embedded 2G / 3G Antenna Penta Band. Small size and high performance http://ow.ly/1bLy1 Designed to address the unique challenges that each new wireless M2M design requires, this embedded 2G /3G antenna is ideal for small scale M2M applications such as personal communication devices (PDAs) , point of sale terminals (POS) and covert tracking devices. With […]
2G, 3G, GPS, WIFI, Bluetooth, Zigbee module frequency range
2G, 3G, GPS, WIFI, Bluetooth, Zigbee module frequency range http://post.ly/PqdL 01.03.2010 Remark of the author after sending the tweet: I just would like to show, the bandwidth we have to cover. Quad band GSM plus UMTS 2100 in one antenna system is still a challenge. Anyhow, we will be glad to guideline you with recommendations […]