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Friday, August 14, 2009

出售 13580417781 NXP Philips 680230-1 CATV REVERSE AMPLIFIER MODULE for sell

出售 NXP BGY68 75 MHz, 30 dB gain reverse amplifier for sell 13580417781

FEATURES
• Excellent linearity
• Extremely low noise
• Silicon nitride passivation
• Rugged construction
• Gold metallization ensures excellent reliability.
APPLICATIONS
Reverse amplifier in two-way CATV systems in the
5 to 75 MHz frequency range.
DESCRIPTION
Hybrid high dynamic range amplifiermodule in a SOT115J
package operating at a voltage supply of 24 V (DC).

出售PDI r1005250l Si Reverse amplifier for sell 13580417781

used item

Product Specification
R1005250L
Si Reverse, low current, 5 – 100MHz, 25.4dB typ. Gain @ 100MHz, 140mA max. @ 24VDC

Page 1 of 4 2004 Nov 01 Document Revision Level A

FEATURES
• Excellent linearity
• Superior return loss performance
• Extremely low distortion
• Optimal reliability
• Low noise
• Unconditionally stable under all terminations

APPLICATION
• 5 to 100 MHz CATV amplifier
for reverse channel systems

DESCRIPTION
• Hybrid reverse amplifier employing silicon dice

Wednesday, August 12, 2009

出售 Racal Landstar MkIV Surveyor for sell 13580417781

The LandStar System

LandStar-DGPS is a satellite delivered GPS correction service providing 24 hour accurate and reliable real time precise positioning on land and in the air in over 40 countries.
With a series of reference stations throughout the world working through the company's 24 hour manned control centers, LandStar-DGPS represents the most extensive wide area DGPS network operating today.

LandStar-DGPS broadcasts DGPS correction data to users via the L-Band satellites. The system operates on a common global standard allowing LandStar receivers and those that are compatible to operate on any of the LandStar networks world-wide.
Corrections are derived from a wide-area network solution, assuring LandStar users of a robust and highly redundant service. This allows real-time positioning accuracies of one meter or less to be achieved throughout the LandStar coverage areas.

A broad range of data receivers are offered by Thales and by third-party vendors, giving users flexibility in choosing a system to meet specific requirements.
LandStar-DGPS applications cover a diverse range of businesses including survey and mapping, agriculture, natural resources, land management, utilities, pipeline transmission, engineering, land and air navigation and positioning.

The LandStar MkIV receivers are produced by Racal Survey for use with its international LandStar differential GPS networks. The receivers are available in two configurations designed to meet a wide range of applications. Low power requirements make them easily "backpackable."

- They are compatible with industry standard differential GPS formats and can be interfaced with the user's existing GPS receiver.
- GPS receiver and DGPS correction data receiver all-in-one
- Flexible system configurations support a wide range of application.
- Easily interfaced to data loggers, chart plotters, precision ag systems, and other devices using NMEA-0183 protocols
- Compatible with all international LandStar DGPS network services (additional subscription fees apply)
- Automatic operation, no user intervention needed
- Low 4.5w power requirements
- Faster, less expensive, and requires less training than many post processing systems

Two receiver models are available, depending on the level of performance required. The MkIV Navigator features a Trimble SK8 GPS receiver, yielding position accuracies in the 2 meter range or better. The MkIV Surveyor features an Ashtech G-12Lite GPS receiver that gives sub-meter position accuracies. The receivers will produce both a differentially corrected position and an RTCM correction for use with an external GPS receiver if desired.

Data Collection in Real-Time!
Landstar offers real-time accuracies which were once possible only with systems requiring post-processing of DGPS base station and rover files. Because it's real-time, and uses standard NMEA 0183 data sentence outputs, you can use it in a wide variety of data collection, GIS, and mapping software environments.

Contact Navtech GPS Supply for additional information or to configure a GIS data collection system.