TELEKOMUNIKASI RADIO & SELLULAR : RADIO FREQUENCY SCANNING UP TO MICROWAVE BANDS - INTERFERENCE & INTERMODULATION ANALYSIS - NOISE - RF OPTIMIZATION APPLIED FOR MOTOROLA - YAESU - KENWOOD - ICOM - TAIT REPEATERS AND LINK REPEATERS, SHIPBOARD RADIO SYSTEM

Harga:

NEGOTIABLE

Jumlah Pesanan:

Negara Asal:

Indonesia

Cara Pembayaran:

Cek Bank

Jumlah:

NOT LIMITED TO

Kemas & Pengiriman:

CONTRACT - NOTICE TO PROCEED - PURCHASE ORDER

* * * FOR MORE THAN 15 YEAR' s WE HAVE EXPERIENCES IN THE PROBLEM SOLVING & PROVIDE SOLUTION' s FOR RF PROBLEM such as : INTERFERENCE, INTERMODULATION, PASSIVE INTERMODULATION, RECEIVER DESENSITIZATION, RECEIVER BLOCKING, CO LOCATED TRANSMITTER ANTENNA, CO LOCATED REPEATERS, TRANSMITTER NOISE.

THOSE ABOVE MENTIONED PROBLEMS USUALLY OCCUR AT : RADIO BASE STATION, CELLULAR BTS, MCPA, CELLULAR REPEATERS, SHIPBOARD RADIO SYSTEM, CONVENTIONAL REPEATERS, TRUNKING REPEATERS, AND CO LOCATED TRANSMITTER SYSTEM ANTENNAS.

* * * CO LOCATION - CO SITING AMONG TRANSMITTER' s & RECEIVER' s IF NOT CAREFULLY DESIGN WILL CREATE INTERMODULATION PROBLEMS FOLLOWED BY RECEIVER BLOCKING, AND THEN DEGRADE THE OVERALL PERFORMANCE.

* * * MOST OF OUR Customer' s HAVE ABOVE MENTIONED PROBLEMS BECAUSE THEY USE LOW QUALITY RADIO, ANTENNA, DUPLEXER, COAXIAL CABLES, CONNECTORS. AND ALSO LOW QUALITY INSTALLATION AND SOME ARE MIS USE, DUPLEXER MIS TUNE & DUPLEXER LEAKAGES.

* * * WE HAVE CAPABILITY & EXPERIENCES MORE THAN 12 YEARS IN THE PROBLEM SOLVING OF INTERFERENCE, INTERMODULATION, AND DESENSITIZATION.

* * * * * Intermodulation distortion is nonlinear distortion characterized by the appearance, in the output of a device, of frequencies that are linear combination' s of the fundamental frequencies and all harmonics present in the input signals.

* * * * * Intermodulation or intermod is the result of two signals of different frequencies being mixed together, forming additional signals at frequencies that are not in general at harmonic frequencies ( integer multiples) of either.

The largest intermodulation products appear at f1 + f2 or f1 - f2 ( second-order intermodulation) , and less so at 2f1 - f2 or 2f2 - f1 ( third order intermodulation) .

* * * * * The cause for intermodulation is the existence of non-linear characteristics of the according equipment. The theoretical outcome of these non linearities can be calculated by conducting a Volterra series of the characteristic, while the usual approximation of those non linearities is obtained by conducting a Taylor series. According to the summations in those series, the above numbering of orders is counted.

* * * * * Intermodulation is rarely desirable in radio, as it essentially creates spurious emissions, which can create minor to severe interference to other operations on the resulting frequency

* * * * * Harmonic components themselves are not usually considered to characterize intermodulation distortion. When the harmonics are included as part of the distortion, a statement to that effect should be made. This is usually considered Total harmonic distortion.

* * * * * IMD in its most basic and most testable form shows up as presence of frequencies not in the input signal. If the sum of two pure tones is the input to the system, IMD shows up as the presence of new tones in the output whose frequencies are the sum and difference of the input tone frequencies.
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* * * * OUR COMPANY PROVIDE THE BEST SOLUTIONS TO OVERCOME THE ABOVE MENTIONED PROBLEMS.

THE SOLUTIONS INCLUDE :
( but not limited to)

* * COMPREHENSIVE OF RF MEASUREMENT OF EXISTING RADIO SYSTEM - ANTENNA SYSTEM - FEEDER COAXIAL SYSTEM - TRANSMITTER SYSTEM - RECEIVER SYSTEM.

* * RF ANALYSIS & RF PLANNING OF EXISTING RADIO SYSTEM - REPEATERS SYSTEM

* * SITE PLANNING

* * THE RF - RADIO HARDWARE REPAIR.

* * ADDITIONAL RF HARDWARE

* * REPAIR THE WHOLE RADIO SYSTEM, ANTENNA & FEEDER SYSTEM.

* * RETUNING EXISTING DUPLEXER OR FILTER.

* * RF OPTIMIZATION OF REPEATER & BASE STATION RADIO.

* * RE ARRANGE THE ANTENNA' s CONFIGURATION & INSTALLATION
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FOR SUPPORT ABOVE MENTIONED SERVICES OUR COMPANY HAS & OPERATE RF FIELD MOBILE WORKSHOP, RF & MICROWAVE WORKSHOP AT OUR OFFICE, WITH SEVERAL LATEST TEST & MEASURING INSTRUMENTS
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* * * * * * FOR MORE DETAIL INFORMATION, PLEASE VISIT :
www.rfpropagation.com
www.rfsolution.info

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