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You found menu 'enter in DFU mode' on V2Plus4 device? Or no? For enter in Bootload mode (used in device CPU not have DFU mode, it use bootloader) need hold right button (if connectors up) and power on

I was just thinking if by loading that firmeware and the LCD don't work then it would be hard to get unit into DFU mode? unless there is a way with using the buttons?

ya, that's what I am thinking to, I can load stock firmware back if you need. I did post in other forum too. I can use the nanovna.app to load firmware it does detect when it's in DFU mode, so I would

As i know all (but not LCD module) work, you always can load last firmware from official page for restore. https://nanorfe.com/nanovna-versions.html

hummm maybe i am missing something it won't let me join that forum :(

Ok that's is good to know i will ask them. you was saying about the display unit could be newer, what would happen if i load your firmware onto a "new" display model? if by doing that the display has

I do not track the development of these devices, the developer asked to leave support. Therefore, it is better to ask him on the site /g/NanoVNAV2 Firmware for the device that I have

Ohh, I need hardware too? And it's only part of the firmware? My has firmware version 20220301 if that tells you anything?

/g/nanovna-users/topic/86678150#25341 Roger

Seems to me you are conflating reactance with resistance. 0 reactance by definition is the resonant point.? Has nothing to do with resistance or VSWR directly.? Resistance and subsequently VSWR are

Point well said, bravo, thanks Jim. Mike C.

On 8/24/22 11:39 AM, TG Frerichs wrote: > I keep seeing the statement that a resonant halfwave center fed dipole has zero reactance at the feed point, and I don't think this is always correct. > For a

Hello Everyone, I was wondering has anyone of you used this product? (https://www.ebay.com/itm/234166377165) My concern is whether this VNA can talk with nanovna saver or may be with some python

I keep seeing the statement that a resonant halfwave center fed dipole has zero reactance at the feed point, and I don't think this is always correct. For a center-fed dipole that is 1/2 wavelength

Use ST-Link programmer, see /g/nanovna-beta-test/message/3109 Part dump firmware. Most easy see current version on version screen, and just download current firmware from official

Does anyone know how to back up the firmware? I want to back my up before I flash Thanks

Again without the HTML formatting. Calibration of any VNA is necessary.? You have to use the open'/short/50Ohm plugs along with your adaptor cable to calibrate the VNA "system". So the proper

Calibration of any VNA is necessary.? You have to use the open'/short/50Ohm plugs along with your adaptor cable to calibrate the VNA "system". So the proper sequence for any VNA is: #1 Calibrate VNA

To read the thread /g/nanovna-users/message/29427 NanoVNA App - Installation and Use #applications I believe you are right; it's to die for. Finally I did well to buy a nanoVNA-F. --

I agree with you X: gain of antenna 1 under test (what we are looking for) A1: gain of antenna 1 A2: gain of antenna 2 M13: measurement of link 1 to 3 M12: measurement of link 1 to 2 M23: measurement