Inventek Systems Formally Releases the New ISM300F2-C4.1 GPS Module -Ideal for Hand Held GPS Applications

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Inventek Systems Formally Releases the New ISM300F2-C4.1 GPS Module Ideal for Hand Held GPS Applications The ISM300F2-C4.1 is an exact pin for pin replacement for the ISM300F2-C4, so no Changes are required for users electing to go with this package. Customers who already have the ISM300F2-C4 may be able to upgrade to the new firmware build. Contact for more details. Inventek Systems’ new version firmware build is based on the SiRF GSW3.5 build.

Inventek Systems is releasing a new firmware build that improves cold start sensitivity by a full 3dB making it twice as sensitive as its predecessor. In addition this build improves restart times up to 50% for applications that turn the receiver on and off to conserve power, thus extending battery life in those applications.


  • Cold Start acquisition sensitivity is improved to -145 dBm (~25 dB-Hz)*
  • Warm Start acquisition sensitivity is improved to -145 dBm (~25 dB-Hz)*
  • Natural Hot Start acquisition sensitivity is improved to -155 dBm (~15 dB-Hz)*
  • The Hot Start TTFF for long receiver off times is improved by up to 50%

Inventek's ISM300F2 family of GPS modules performs fast and deep search capabilities; it features high sensitivity and low power. The 20-channel OEM GPS module always had the ability to acquire at lower signal levels. The new improved firmware is now released into full production on the dual UART GPS with SiRF binary and NMEA-0183 standard outputting position, velocity and time, offering real time GPS updates. This compact 18mm x18mm GPS module is ideal for OEM GPS applications and is based on the SiRFstarIII™ architecture.

This module is targeted for OEM customers who need fast and accurate GPS navigation such as:

  • Automotive
  • Aviation
  • AVL
  • Sports

Ordering information:

Customers who have been ordering the ISM300F2-C4/C5’s can continue to purchase the older firmware by ordering the ISM300F2-C4 Or ISM300F2-C5. The new firmware can be purchased by specifying ISM300F2-C4.1 and ISM300F2-C5.1

By default all new customers will be receiving the new firmware.

The ISM300F2-C4.1 sells for $26.95 in 100 piece quantity and can be ordered on line at

(* Conversion between dBm and dB-Hz assumes 4 db of System Equivalent Noise Figure)

About Inventek Systems:                    

At Inventek Systems we pride ourselves in being a USA-based, full service GPS company. While GPS modules and GPS antennas are our primary focus, we also provide complete GPS services from consulting to custom design, manufacturing and training.

Inventek Systems is a SiRF (VAD/VAM) Value Added Manufacturer and is a certified developer and manufacturer of GPS modules and system level products using SiRF GPS products.
For more information, call 978-667-1962; or visit

Inventek Contacts:

Martin Tierney, Vice President of Sales

Nancy Rose, Operations


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Martin Tierney
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