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New user: NanoVNA-H how to determine hardware version

Alan G3XAQ All Messages By This Member #9907 I got a Nano-VNA-H off eBay for Christmas. It has a black plastic case with a Q-code on the label that just seems to contain nanovna.com according to my iPhone. The label also has a serial number 19110234. The label lists 3 frequency ranges covering 50KHz-1.5GHz . When powered up CAL->Version gives the firmware version as 0.2.3-3-g8ac9166 and build time October 18 2019 None of this seems to tell me which hardware version I have received. I've trawled the messages on here and can't see how to find it. I would like to know because I want to update to later firmware and there are comments in the release notes about 1N4148 or schottky diodes in different hardware versions needing battery voltage calibration commands. Do I really need to pull the hardware to bits and examine the PCB? Thanks, Alan G3XAQ
Larry Rothman All Messages By This Member #9912 Hi Alan,You most likely have hardware version 3.3 which is OK. V3.4 is the latest and that came out in Dec. You should update to the latest firmware that came out over the weekend. Please review the last 20 posts or so for the link or just go to Please refer to the forum Wiki for all the info you'll need in order to use the NanoVNA. toggle quoted message Show quoted text On Monday, January 20, 2020, 11:29:43 a.m. GMT-5, Alan G3XAQ <alan@...> wrote: I got a Nano-VNA-H off eBay for Christmas. It has a black plastic case with a Q-code on the label that just seems to contain nanovna.com according to my iPhone. The label also has a serial number 19110234. The label lists 3 frequency ranges covering 50KHz-1.5GHz . When powered up CAL->Version gives the firmware version as 0.2.3-3-g8ac9166 and build time October 18 2019 None of this seems to tell me which hardware version I have received. I've trawled the messages on here and can't see how to find it. I would like to know because I want to update to later firmware and there are comments in the release notes about 1N4148 or? schottky diodes in different hardware versions needing battery voltage calibration commands. Do I really need to pull the hardware to bits and examine the PCB? Thanks, Alan G3XAQ
Ronan Daly All Messages By This Member #9913 Just open it up - its only 4 screws. You will see the board version on the PCB and also will see if D2 is installed or not. Mine arrived a few days ago. PCB is v3.3 and the firmware was dated November 25. D2 was installed as well.
hwalker All Messages By This Member #9924 On Mon, Jan 20, 2020 at 08:29 AM, Alan G3XAQ wrote: " None of this seems to tell me which hardware version I have received. I've trawled the messages on here and can't see how to find it. " ============================================================== Alan, I have both NanoVNA-H versions 3.3 and 3.4. I found the easiest way to tell the difference between versions, without opening the case, is turning the unit off and observing the power LED. On ver 3.4 the LED extinguishes immediately, whilst on ver 3.3 it stays illuminated for a few moments like the original NanoVNA. - Herb

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