Array Solutions AIm 4170C Antenna Analyzer .1 to 170 MHz with AC power supply

Description

An amazing device that has many capabilities for measuring what your antenna is exhibiting.
Read QST review by Phil Salas AD5X . Manual is a free download on the web.
AIM 4170 Basic Description The AIM 4170 antenna analyzer covers 100 KHz to 170 MHz using DDS technology. A 12 bit analog to digital converter digitizes the raw data for processing, thereby avoiding diode detector non-linearities. This results in excellent dynamic range and linearity for accurate magnitude and phase measurements. Impedance measurements can range from 1-ohm to 10K ohms, and true phase angle is measured so there is no ambiguity when measuring inductive or capacitive reactance. Internal band pass filters reject out-of-band high power interfering signals which makes the unit very robust in the presence of broadcast transmitters or other high power signals near the measuring frequency. Also, since the internal RF generator is very stable and can be calibrated to WWV, the AIM 4170 can easily be used as a signal source for testing receivers. The AIM 4170 is very compact at just 5x4x1.5 inches, and weighs only 9.6 ounces (see Photo A). This compact size comes with a bit of a penalty though, as you do need a PC in order run the unit and display the results. However, the AIM-4170 is quite portable even with a laptop computer. It can be mounted remotely at your antenna feed point if desired, with power supplied through a user-provided internal battery. Or you can read the antenna impedance with the AIM4170 located in the shack using the "Refer to Antenna" function. Here, the software guides you through a cable calibration procedure after which AIM 4170 essentially subtracts-out the feedline, thereby providing the actual antenna impedance data as if the AIM 4170 were located directly at the antenna. RF parameters that are measured, calculated and displayed include the following:  SWR referenced to any impedance (1:1 to 20:1)  Impedance at the cable input or at the antenna terminals  Return loss  Reflection coefficient  Cable length , impedance and loss  Distance to fault (open or short)  Smith chart display  Resistance and reactance of discrete components at the operating frequency  Quartz crystal parameters