Tag: M2M tip

Embedded GSM antenna

A flexible PCB gives you an ultra flat shape and the freedom to glue the embedded GSM antenna inside your box, even it has a rounded shape. This embedded GSM antenna is ideal for use with cellular modules with Assisted GPS functionality on board where only one antenna connection is available. The antenna has been designed in a flexible material with a rectangular form -factor and cable connection for an easy installation. The embedded GSM antenna works on different plastics and thickness.

Symbian OS in M2M

We all know Symbian as an operating system for Nokia mobile phones.  Symbian is driving the 3G modem listed at http://www.gsm-modem.de/umts-modem.html .  Symbian is able to drive the pin compatible 2G and CDMA modem as well.  All this is possible because Telit´s 864 family is pin compatible. Video: An Introduction to the Symbian System Model

Indoor locating without GPS. Summary of technologies

Today we offer a summary of indoor locating technologies. 1. Indoor positioning on Bluetooth http://www.gsm-modem.de/M2M/tweet/indoor-positioning-on-bluettooth/ 2. WIFI 802.11b is use to detect change in position of one meter or even less http://www.gsm-modem.de/M2M/tweet/m2m-lbs-indoor-locating-w/ 3. Indoor Navigation without GPS: The new gold rush? http://www.gsm-modem.de/M2M/m2m-news/indoor-navigation-without-gps-the-new-gold-rush/ 4. Batman´s technology in use to see trough walls. Will Gotham City come […]

Low power GPS patch antennas

GPS antenna general data Dimensions (mm): 10×10, 12×12 , 13×13, 15×15, 18×18, 25×25 Temperature range: -40o C to +85o C Coaxial cable GPS: 80 mm connector U.FL, MMCX, W.FL, H.FL, GSC Other cable length, cable type or coaxial connector upon request Customised colour of plastic enclosure or customised frequency range upon request Technical data GPS […]

GSM Audio Codec & DTMF. Why the Half Rate Codec could force trouble?

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 […]