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Thin brass solders easily with regular electronic solder (at least it did before they took the lead out). You might want to tin it along the edges you are soldering together. Also cuts fairly easily

On run external program scan, calibretion data always rebuild, and use interpolation Do not pay attention to it, if start stop freq some, no difference

I never change the frequency range (center/span) - at least, not intentionally. I really only expect to be using this to sort IF filters, and for these a range from 10.4 to 11MHz or so works pretty

Dave, I am curious how you soldered (braized?) the brass shim. I've been thinking about making my own shields (not for my nano) but am a bit intimidated by my lack of experience with brass. Thanks,

Hi, I wonder if before recall a saved calibration we should do a reset first. 73, Bill KU8H

Big letter mean used calibration data stored in flash If you change frequency, or use multisegment scan from NanoVNA saver or another program, calibration table rebuild and use interpolated values

Larry - I re-executed the calibration over 10.4 through 11MHz, saved to "1," and I always recall it before measuring. However, the letter changes every time I start the scan (from "C1" to "c1") - I

At HF the Anritsu tee is likely not going to be that much better a cal as the supplied SOL. To test it cal with the ANritsu Tee and then measure the supplies SOL. Likely any difference you see will be

You want to calibrate with as nearly to test jig configuration as possible. For example, when measuring with alligator clips, I calibrate using alligator clips.

Hi DiSlord and Larry, Thanks for all info. DiSlord,? I did flash the latest? 0.9.1 firmware initially, but to be sure and in case you updated the 0.9.1 release I loaded the one you gave me the link

My test SD cards foto

In my test i use Samsung EVO Plus 128Gb HD XL Samsung EVO Plus 32Gb SD HC Kingston MicroSD HC1 16Gb All worked, detected 128Gb flash not write (used exFat filesystem, not supported), but card answer

I have access to an Anritsu VNA at my job, and with it we have the calibration "tee" which has open, short and load using N connectors. Would I make more accurate measurements using this for

Hi Jos I think you might ask DiSlord if the SD card driver supports SDHC type cards or the older type.? Larry Sent from Rogers Yahoo Mail on Android On Sun, 24 May 2020 at 9:28 am, Jos

Flash last fitmware from this post /g/nanovna-users/message/13787 In it i fix some problems Time command syntac is: Card not detected or answer, try update firmware

Hi DtSlord, Thank you very much for the new firmware with microSD support, fantastic !??? I have added the connector to my H-4 and flashed the firmware. I have 2 questions? : 1 I tried to set the

Hello, Have you got any images of the formers you made and any more close ups of your finished work? I've got a clone, non-shielded and wondered about adding something to it. Given the plethora of

Hi folks, I got a bricked VNA (white screen) from a very frustrated OM (very cheap: a glass of beer only, hi). - First: I tried the "DfuSe"-way - no success - as expected. - Second: I used the

What I see in the plot that you posted is a filter that is about 170 kHz wide at the -3 dB points and centered at 10.715 MHz. This is consistent with a Murata SFELF10M7HA00-B0 that has a spec of 180

Who can increase the font size in the firmware?