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In the vna menu tree there is a reset button/function. That clears the cal values.

You can set DFUsedemo to verify the firmware after flashing, did you try that ? If it says the firmware verified ok, than your .dfu file is the same as what has been loaded ! Jos Op 3-12-2019 om 12:39

how do i do that?

Hello Paul I had the same problem recently. What you definitely need to do is resetting the existing Cal values in the memory before saving new data there. In my -Q SW Version I even had to Reset the

Here's the chance to take in the ST-Link v2 dongle and connect as described. If you do everything right, it works. For the first time, this was the only solution for me. Gyula

i got it working,it says the firmware uploaded ok,but my vna looks like nothing actualy uploaded when Dfuse found tha vna and said it uploaded fine but ive the same call data and the original firmware

my load measures 49.8 ohm on my fluke.,forgot to say i did the cal on 3 ranges stored as 0, 1 and 2,. 0 was 1-30mhz,2 was 140=150 mhz,2 was 400-500 mhz range 0 is ok rage 1 is ok,range 2,ie 40-500 mhz

Hi Paul Have you tested you load for being 50 ohm. Mine went bust pretty quikly so try a different load Kind regards Kurt -----Oprindelig meddelelse----- Fra: [email protected]

Hi When you start DFUse Demo you must be able to select? "NanoVNA in dfu mode'? in the " Available DFU devices" box.? If not? the drivers are not installed? (correctly), most of the time Windows

any ideas ive installed the software package driver s/w but the stm32 bootloader says no driver is instaled and cant find it,windows updates are enabled.

im trying to flash my vna,the dfuse program doesent list it,the comport drivers look ok,any ideas,i shorted the jumpers powered it to the white screen,removed the jumper then started the dfuse prog.

this isnt going well,i put the vna into download mode,use DfUse to load the firmware to,it says success then i reboot the vna and nothing has altered,still displays my orig version number etc!,can

well i uploaded the fw with the supposed bigger fonts,i did that after loading dmr_clear memory,it looks exactly the same,also the fw version on the start screen is the same as the original, also

I set the sweep from 1 to 30mhz then do the cal save in pos 0 then restart it,in the smith plot the marker moves all the way to the left like it should with cho shorted but with it open the marker

Sadly, Search in Messages does not find Wiki or Files content, and Wiki Search does not find Message or Files content..

Hi Paul, I see you are inexperienced in search, so I suggest there is a Search button under [email protected] next to the Topics or Message button. Press and type what you are looking for,

Hi Paul, So far, many users have had little access to 900MHz (800MHz), which can be achieved with Si5153 harmonics. Of course, you can set the STOP frequency to a lower frequency. You can scan it in

Thanks Gunthard. You have compiled a very well written guide with lots of pictures for easy understanding. -- Salil Tembe (Nuclearrambo.com)

Hi Mike, ADMIN >>> SETTINGS >>> USER NOTICES Tick the box that says ACTIVATE MESSAGE. This welcome message, that you may edit is then automatically sent to each new member. I hope this helps. 73 de

Hello, Andy! I would be appreciative to learn from you; -How do you send out an automatic greeting to the new users? So far, I must do all of this one-at-a-time. (My little group: