The article provides a detailed procedure for noise figure measurements. Noise figure measurement is one of the most important parameter in the receive chain of the satellite - to - ground station link. The signals received at the antenna are very weak and requires a low noise amplifier to keep the noise below the threshold level.

Unlike time domain measurements, which use Oscilloscope, frequency domain measurements use Spectrum Analyzer. The article describes the characteristics and applications of Spectrum Analyzers, and the features that one may need to consider while buying a spectrum analyzer.

The article provides a way of measuring various parameters of an rf coaxial cable. One most important property of a coax is the VSWR, short for Voltage Standing Wave Ratio. This is also expressed in terms of Return Loss (RL).

The section provides various tutorials on RF test and measurements. These include, co-axial insertion and return loss measurement, spectrum analyzer measurements, and noise figure measurements. An article on coax cable construction and assembly is also provided.

The tool provides a way to measure return loss given the load and source impedance. VSWR (Voltage Standing Wave Ratio) is a metric commonly used with antenna systems for ham or shortwave radio communication. VSWR is normally defined as a ratio with a 1:1 VSWR, indicating that there is an exact or perfect match between all antenna system elements

The tool provides a measure of reflection coefficient given source and load impedance (Zs and Zl). Reflection coefficient is a measure of energy transfer from source to load. The value is 1 when load impedance perfectly matches the source impedance.

You provide Outer Diameter (D), Inner Diameter (d), and Permittivity (εr) values then the calculator gives you Zo (ohms), fc Cut off frequency(GHz), C/length (pF/m), and inductance L/length (nH/m). Other tools are available for impedance measurement, dbm to milli watt converter, reflection coefficient calculator, etc.

Provides articles on rf cable measurement, noise and impedance measurements, cable assembly testing, and others. The articles are useful for working professionals working in the area of rf and satcom. Online cable testing tutorial provides various parameters that are necessary for characterizing a cable assembly.

Provides rf and microwave cables and cable assemblies. Resources are available for end users about the manufacturers of rf connectors and cables. Articles on noise measurement, impedance measurement are available. Cable assembly software enables users to input their requirement of calbes assemblies for quote.