Tag: M2M tip

DTMF encoding by GSM modem

M2M tweets
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It is not easy to detect and recognize DTMF with satisfactory precision. Often, dedicated integrated circuits are used. It is rather complicated, so it is used only marginally. Most often, a MT8870 or compatible circuit would be used. The MT8870 is a complete DTMF receiver integrating both the band split filter  and digital decoder functions. […]

GSM module located by Timing advance

M2M FAQ, hints, tips
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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 […]

SIM card on Chip VQFN8 SIM UICC form factor specified as ETSI TS 102 671

M2M industry news
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Tim Evans (Vice Chair ETSI SCP at ETSI) mentioned at message board at Linkedin  (13.03.2010): “I am pleased to inform you that ETSI SCP agreed the new VQFN8 SIM UICC form factor last week as ETSI TS 102 671.” Remark of the author of the blog: VQFN8 SIM cards are an interesting technology to create […]

Low Power GPRS module in combination with Lithium-ion batteries that runs twice as long

M2M FAQ, hints, tips
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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

M2M FAQ, hints, tips, M2M tweets
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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 […]