Looking into the future I can see more measurement points, averaging and a fft bandwidth implementation. consider too that you may want it to run stand alone, or with one of the open sourced programs, which is not how I run them. Both an WebApp for google chrome and an Android app are available controlling the analyser and displaying measurements. Instead you have to push down on the top multi-function switch while turning on the NanoVNA-H4 to enter the DFU mode.

Setting start and stop frequencies, instead of center frequency and span, as you already found out works fine above 1 GHz. One issue noted was that after some hours of operation, the combination seems to lock up, not responding to touch, the button or jog wheel. SWR is an essential parameter for assessing the impedance match between a transmitter and an antenna, or any RF transmission line.This Antenna Analyzer is provides outstanding vector network measurement capabilities and perfect for evaluating antenna resonance and SWR. The attached noise floor measurements were made with CH1 of both devices terminated with a 50 ohm load.

If a manufacturer would like to announce or raise awareness for their product eHam suggests writing a brief News release and submit it to eHam's News. A portion of all proceeds of this VNA is paid to the ttrftech team to continue and further NanoVNA development. Quote from: joeqsmith on October 04, 2023, 12:25:15 pm Because you didn't read this post, or because you were asking something else?I would like to do some impedance measurements in this frequency range (coupling-decoupling networks, CDNs) and maybe some radiated RF disturbance in the 30 MHz - 1GHz range. In the interest of maintaining objective product reviews for all review readers, requests to remove Approved product reviews may be declined by eHam. Merle's confirmation was enough for me to report an issue to hugen on his GitHub page ( https://github. Reviews of equipment capable of CB/Freeband operation or not FCC Certified/Type Accepted may be removed.

If someone can describe menu changes or point to an image for printed NanoVNA-H4 Menu Structure Map, I will create and updated map for https://groups. The larger battery and a new power chip decrease noise that was limiting measurement range during usb connection. The biggest advantage of the 4" display is the graphics are not as compressed and the larger fonts can be laid out normally so that the screen is more legible (See the attached photos for comparison).The magenta trace is after removing the frequency offset against 10MHz and after correcting also the frequency drift - as mentioned, the 53132A was only recently switched on and it's reasonable to assume that it will drift for a while before settling. Some of talking head hams got the hardware for free to review but outside of unboxing it, that's about all you get. They are so cheap, if you really feel you can make use of one, I would just get one of each to cover your bases.

As known by most hobbyists, NanoVNA has become the most popular VNA and antenna analyzer project in the community since its release in 2019. Some of these create more questions than they answer and require more analysis so don't just accept them as absolute truth. I figured out how to work it, and with the Saver PC software was pretty impressive, until it quit 3 days later. eHam's Product Reviews are intended to provide an opportunity to share an opinion, positive or negative, of a commercially available ham radio-related product or service.

A valid product review is one where you have personal experience or knowledge of the product that you would like to share with others. Once I have a firm grasp of the fundamentals of RF, I want to pursue a career in microwave engineering. I'm still in the process of getting used to it and finding out what I can and cannot do with it, but I thought I'd post some of the ADEV graphs I've come up with. It's reasonable to assume the OCXO will do a bit of retracing its previous lifecycle until it settles.