Instrumentation and prototype design:
Since 1994 Prototype Express’s instrumentation design activities has been involved with a number of projects. The projects have ranged from designing the electronic circuitry for various multimeters to 10MHz function generator as well as equipping other previous designs with GPIB interface. These have been custom designs for instrument manufacturers.
The multimeters designs incorporate state of the art technology for long battery life and protection. They include features such as autoranging and transistor test for the 3.5 digit hand-held version to top of the range 4.5 digit table-top multimeter with GPIB interface. Prototype Express can provide custom solutions to your needs to complete your product range.
There are many problems in GSM networks, like as weak signals, and Ping-Pong effect, which causes disconnection during a call. KMR-900 is a very powerful GSM repeater and a comprehensive solution for the above problems. This system is ideal for smaller application to gain the strong signal for the areas like Offices, Underground areas, Factories, Hotels, Shopping malls, Parking Garages, Banks, Restaurants, Houses and any in-building dead zones.
Now with “KMR-900” you can stay connected wherever you are.
Frequency range: Up-Link 890-915 MHz
Down-Link 935-960 MHz
Output Power: 12dBm max @ 2tone IMD£ -36dBm.
Maximum input power: -25dBm
Maximum gain: 70dB
Ripple: <= 3dB
NF: <= 7dB
Auto gain control range: 31dB
Auto gain control steps: 1dB
IMD: <= -36dBm
RF I/O ports: SMA female connector
Power: DC 9V 2A. (AC/DC Switching Adapter, AC 100~240V)
GSM Mobile blocker provides the final solution in any area where cellular communications frequently cause annoyance either by loud incoming call rings or loud telephone conversations. GSM Blocker is suitable in executive offices, board meetings, conferences, seminars, libraries, cinemas, religious places, public transport, concert halls, restaurants and educational institutions etc.
Frequency band: GSM 935-960 MHz
Output Power: <0.25 watt
Coverage area: 1-15 m (radius) adjustable in 5 steps
Power Supply: 9-25 Vdc/1A
(Possibility of using 12Vdc or 24Vdc backup battery)
Dimensions: 14.5×12.5×4.5 cm
Weight: 500 gr
Prototype Express can provide you with: