Cable & Antenna Analyzers

An antenna analyzer is used to measure and optimize antenna performance by checking parameters like VSWR, return loss, impedance, and resonance. It helps technicians quickly identify issues such as poor matching, damaged feedlines, or incorrect antenna tuning.

Antenna analyzers are widely used in RF communications, broadcasting, public safety, and amateur radio applications. For example, an antenna analyzer may measure a VSWR of 1.2:1 at 450 MHz and show an impedance close to 50 ohms, indicating a well-matched antenna system.

An antenna analyzer is designed primarily for field testing and tuning antennas, focusing on measurements such as VSWR, impedance, and return loss.

A Vector Network Analyzer (VNA) is more advanced and measures both magnitude and phase characteristics of RF networks, allowing detailed analysis of filters, amplifiers, cables, and antennas. VNAs are commonly used in laboratories and engineering environments, while antenna analyzers are optimized for faster, simpler field diagnostics.

For example, a VNA may measure S11 performance from 10 MHz to 6 GHz with accuracy down to fractions of a decibel. 

Testing antenna performance typically involves measuring VSWR, return loss, impedance, and signal strength across the antenna’s operating frequency range.

Technicians use antenna analyzers, wattmeters, or VNAs to verify that the antenna is properly matched and radiating efficiently.

Field testing may also include coverage measurements and checking for cable or connector losses. For example, an antenna tuned for 900 MHz may be considered acceptable if the VSWR remains below 1.5:1 across a 20 MHz bandwidth.

Fundamentally, the Sitehawk performs 3 different types of measurements: cable loss, impedance v. frequency, and Distance to Fault via Frequency Domain Reflectometry (FDR). Where applicable, results can be returned in VSWR or Return Loss. 

Your SiteHawk comes with an Open-Short-Load Calibration Combo. The SiteHawk needs a measurement calibration (also known as a field calibration) with the Combo when changing frequency ranges. Your SiteHawk should get a factory calibration at least once every 3 years.
Request a Factory Calibration Quote > 

This depends on a few factors: the propagation velocity of your cable, the loss of your cable, and the frequency span of your measurement. Unless your cable lengths are >1 km, you shouldn't even need to worry about this.
If you do need to worry about this, contact our team of experts for help calculating your max distance.