Joined in 2023 
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63 About this deal
A valid product review is one where you have personal experience or knowledge of the product that you would like to share with others. We can export Touchstone (snp) files for various radio design and simulation software through PC software. New: A brand-new, unused, unopened and undamaged item in original retail packaging (where packaging . Ons is ‘n vriendelike, hulpvaardige en hartlike groep mense in hierdie klub en verwelkom nuwe lede en belangstellendes van die Kaapstad, en Boland gebied en verder verwyder.
In the same ragtag manner I'm currently running a quick test of my GPSDO against the OCXO timebase of my 53132A counter that has been switched off for months. The NanoVNA-H4 removes the two accessory RG174 cables and replaces them with higher quality RG-316 cables. You can also export the data to a computer using the NanoVNA-H4’s USB interface and supporting software. eHam considers soliciting and/or rewarding favorable reviews by manufacturers/dealers as unethical and unwelcome. It is very easy to become "obsessed" with the 50 ohm, 1:1 SWR, when in fact the antenna that you are testing may not actually exhibit 50 ohms on its resonant frequency at its feedpoint.As a result, you could actually be detuning your antenna from the resonant frequency that you want, by aiming for a 1:1 SWR at 50 ohms.
Improved Frequency Algorithm] The improved frequency algorithm of NanoVNA-H4 can use the odd harmonic extension of si5351 to support the measurement frequency up to 1. The resolution of the screen is about twice that of the NanoVNA-H but does not come close to matching the resolution of the NanoVNA-F. Screen changes to CENTER 1300 MHz, SPAN 400 MHz but is locked up (No sweep, no touchscreen or switch response).GHz vector network analyser designed to measure reflection and transmission coefficients of equipment without the need for a large analyser. For example, it shows ">DFU" option under CONFIG and of course the NanoVNA_H4 does not use this method to enter DFU mode. c. Adjust the chart’s appearance by customizing the colors, line width, and other settings if desired.
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. In that case, my only criteria was firmware that didn't lock up requiring the VNA to be power cycled to recover.The TX/RX method can measure the complete S11/S21 parameters (need to manually replace the transceiver port wiring). Given hugen's history I know he will quickly release a firmware fix, but this being the Chinese New Year will likely delay his response. The 103 third parties who use cookies on this service do so for their purposes of displaying and measuring personalized ads, generating audience insights, and developing and improving products.
hugen definitely needs to look into the misaligned usb port opening QA issue that some members have reported.
I'm mostly interested in digital modes but antennas are pretty mysterious to me and I'm just trying to get the proper tools to make sense of them. Reviews that only state "Its great"or "Terrible product" are not helpful without more information why its great or terrible. IMPROVED FREQUENCY ALGORITHM:The Vector Network Analyzer can use the old harmonic extension of si5351 to support the measurement frequency up to 1.
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