Wesley perhaps I am a bot off topic now but a very solid RF guy turned me onto this VNA, looks interesting have to find out more such as is tracking gen limited like in the Chinese box.
https://www.arraysolutions.com/antenna-analyzers%20/vna-uhf-dx
Looks as though the coupler is inside the unit similar to many antenna analyzers, I do not know the downside of this config.
I don't participate on these forums much but have watched presentations and I highly respect the stuff Tinselkoala presents, thank you for participating in Wesleys tech circus!
Mick
5 kHz to 1200 MHz. good
N-type connectors.
Includes Calibration load set with N-type male connectors. good #1
Two test coaxial cables. Power Supply good #2
Impedance, SWR, good
Return Loss (S11) and Insertion Loss (S21) good
==========================================Port A is equivalent to an antenna analyzer. (Similar to the AIMUHF).
Port B has a 50 ohm input impedance with return loss greater than 20dB.
Port B nominal dynamic range: 90 dB up to 200 MHz, 70 dB up to 500 MHz, 60 dB up to 1 GHz.
Programmable RF amplitude for Port A (-13 to -33 dBm).
Resistance and reactance measurements of antennas and discrete components.
Transmission measurements through filters or networks.
Markers for impedance scans and Smith charts.
Parameters that can be plotted include: Resistance and reactance for series or parallel equivalent circuits.
Impedance magnitude and phase angle.
SWR
Return loss
Two port network transmission (S21, magnitude and phase).
S11 and S21 can be plotted at the same time.
Cable length, impedance, loss, and velocity factor -
that must be TDR future #2
Distance to fault (open or short) -
that must be TDR future TDR (Time Domain Reflectometer) plots -
that must be TDR future Smith chart displays (featuring phase rotation and zoom)
Band scan to check for interfering signals
Quartz crystal parameter measurements
Preprogrammed functions, such as tuning a ¼ WL stub, and many more
I/O expansion port for accessories (digital and analog)
Calibration loads are included
They repeat the same many times let's mark it as #1No internal adjustments
Optically isolated USB interface to PC
Impedance measurements can range up to 10.000 ohms.
The sign of the phase angle indicates either inductive or capacitive reactance without ambiguity.
The RF generator can also be used as a signal source for testing receivers.
The frequency is very stable and it can be calibrated with the WWV signal.
Digitized data is sent to the PC via an optically isolated USB port.
Power for the VNAuhf can be obtained from a small DC power supply or a battery.
With a laptop computer, the unit is quite small and portable.
Measurements can be made at ground level and translated as if they were at the antenna feedpoint by using the refer to antenna function.
The impedance at the antenna itself can be read with the VNAuhf located in the shack at the receiving/transmitting end of the coax.
The cable can be any length.
The cable's impedance and loss characteristics are determined by a simple calibration procedure and the antenna's impedance is then plotted directly during the scan.
Numeric values can be read from the graph data using the mouse-controlled cursor.
The scan data can be saved to disk or printed to compare before and after results. It can also be imported into spreadsheet programs for further analysis.
Included Accessories:Power Cord
12VDC Worldwide Power Supply
N-Male Calibration set #1
USB A to B cable
#2VNA-UHF Cables
#2
==============================
I have pointed only that this list could be 3 times shorter.I do not know the price, if it is few hundred dollars than it can be god deal.
but you need computer, software and monitor.
The N connectors look for me like cheap directional coupler of some Chinese garbage manufacturer but I might be wrong.
No brand names like Narda, Microlab, Amphenol, or even very inexpensive Mini Circuits .
The processing can be slow or very slow that we do not know.
So look at Youtube if you can find how it works.
and post your search here.
Wesley