¿ªÔÆÌåÓý

ctrl + shift + ? for shortcuts
© 2025 Groups.io
Date
Re: Si5351A max fundamental frequency
Bo I am the owner of RFzero (THANK YOU!) and of three, soon to be four, Nanovnas. While it does not fundamentally alter the discussion here, The Nanovna only has two frequency ranges: 55kHz to 300 MHz
By Warren Allgyer · #3299 ·
Re: NanoVNA-Saver 0.0.12
Rune wrote: " I'd have wished they'd contact me about it instead, but as it's open source, they are of course free to use the code. I may need to make sure they don't reuse the name, though, so there
By hwalker · #3298 ·
Looking for firmware with battery indicator, 1500 and big font
Is there build firmware with battery indicator, 1500 MHz and big font ? I only found with small font.
By Eko Wa · #3297 ·
Re: NanoVNA does not want to start -solved
Hi Herman, That is really strange. However, your Nano is not lost -just buy a cheap power bank that puts out 5v and use that to power the Nano, which really runs from 5v, not 3.7v. In fact, you can
Re: NanoVNA-Saver 0.0.12
Its time to give Rune a cup of coffee! Where is the paypal button?? :-) Peter Op 28-9-2019 om 15:06 schreef Rune Broberg:
By peter_pc2a <pc2a@...> · #3295 ·
Re: errors of "error" models
Hello yin&pez, Thank you for introducing the topic of errors of error-models. This discussion is very interesting. To help me understand, I would like to ask a few questions. First, you mention that
Re: errors of "error" models
22 : We Learn Our Lessons - NanoVNA Calibration Considerations and Procedure_v1.1 @Gary O'Neil : /g/nanovna-users/message/3259 Hello, Thank you very much for your time that you spent
By gin&pez@arg · #3293 ·
Re: NanoVNA-Saver 0.0.12
I'd have wished they'd contact me about it instead, but as it's open source, they are of course free to use the code. I may need to make sure they don't reuse the name, though, so there isn't
By Rune Broberg · #3292 ·
Re: NanoVNA-Saver 0.0.12
Rune, The popularity of NanoVNA Saver continues to grow. I just saw this over on the NanoVNA-F user group. "We are currently modifying nanovna-saver (a good NanoVNA PC software) to fit NanoVNA-F, so
By hwalker · #3291 ·
Re: errors of "error" models
21 : The Mathematica Code and the Unpacked DERDEI Code @Jose Luu : /g/nanovna-users/message/3278 Hello, Thank you very much for your kind interest in our work ! We much appreciate
By gin&pez@arg · #3290 ·
Re: nanovna Battery Specifications
Thanks for the info Warren, 73 de VU2PGB VEEN
By Praveena NG · #3289 ·
Re: nanovna Battery Specifications
An update on dynamic range. In the photo the upper unit is the unshielded "worse" version and the bottom is the latest, best, shielded version. Both are calibrated for the 600 - 900 MHz range, Logmag,
By Warren Allgyer · #3288 ·
Re: Another modified nanoVNA software
is this modified software available to other users? Gyula
By Gyula Molnar · #3287 ·
Re: Step attenuator testing versus dynamic range
All, Thanks for the excellent information - so it does sound like step attenuator leakage is the culprit....which is not at all surprising given that it is a very cheap one ($40) that I purchased on
By Bruce KX4AZ · #3286 ·
Re: Si5351A max fundamental frequency
For those interested in the spectrum of the Si5351A here is a series of pictures, using my RFzero, at 267 MHz (i.e. 800 MHz "NanoVNA version"), 280 MHz, 298 MHz and 299 MHz. The pictures clearly show
By Bo, OZ2M · #3285 ·
Re: NanoVNA does not want to start -solved
@Larry, Brian, DMR In the meantime I have replaced the IP5303. Also the 10?F cap. But there is no improvement. The Nano still won't start on its battery. The battery can be charged normally. I have
By ON1BES · #3284 ·
Re: nanovna Battery Specifications
No battery needed for saving calibration data, It is stored in flash memory
By Erik Kaashoek · #3283 ·
Re: nanovna Battery Specifications
@ warren Your nanovna is ver 3.1 printed on pcb with shields for three sections. Is it the latest PCB Version. Is internal battery necessary for saving Calibration data. 73 de VU2PGB VEEN
By Praveena NG · #3282 ·
Re: Step attenuator testing versus dynamic range
Bruce What you are seeing is leakage through your attenuator. Attenuators intended for HF work and below, especially those with a network of mechanical switches and resistors, often display this
By Warren Allgyer · #3281 ·
Re: Step attenuator testing versus dynamic range
I just did the experiment here with my hp 355D 100 dB attenuator/ 10 dB steps. Attenuation is spot on and the VNA follows it just fine all the way down to 80 dB. No surprises at HF. If you have a COM
By alan victor · #3280 ·