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Well, if you're connecting to a PC anyway, I would (obviously) just use NanoVNA-Saver ... which does have the option of putting in VSWR reference lines. ;-) -- Rune / 5Q5R

If you are looking for more resolution measure the mismatch in terms of return loss. You'll see that a small change in SWR shows up significantly as a change in return loss. Also, another way to look

Oristo, Your use of List slicing, "result[1+d.start():])", to trim the blank and echoed command line from the returned data trumps my idea of: ser.write(command.encode('ascii')) sleep(0.1) # mark time

current firmware allows to use 1 Hz span. Tested with 100 Hz span, works ok. TDR, phase delay, and other measurement needs linear frequency steps.

I agree and vote for the hobby version. Joel N6ALT

Hello Eric, it could very much be an option for a future release! Depending on the software you used to make these changes, there might be an option to create a "patch" file, which would make it

you're needs to check voltage reading with disconnected USB cable. Otherwise USB power will be applied to the battery and you will get wrong reading...

Hi Rune, First of all my compliments for your excellent software! I took the liberty to implement the cable impedance profile in the TDR menu as published in

nVargs.py now implements multiple commands per invocation, surrounded by (unlogged) `pause` and `resume` Both it and nVcmd.py are tweaked to eliminate redundant trailing newline.

Except the wanted harmonics combination , all other combinations of harmonic products fall outside the audio band. If you would use the same harmonic for both test signal and LO the other harmonics

Unless your hobby is actually debugging firmware, why not stick with Hugen AA releases? They are fairly frequent, if less exciting..

Could it be setup so that selecting a text field causes that field to toggle between large font and small font mode?

101 steps for 50kHz to 1500MHz spreads them thinly. I appreciate the storage impact, and when not testing a particular DUT tend to calibrate for 4 bands of roughly equal octaves: 50-658, 666-8660,

necessaryevil86, Before you make the order, it’s better to ask seller the detail spec. the list below is what the current NanoVNA supports. - 3.3V (5V if jump wire) - 4-wire SPI. It seems the eBay

Hi Erik, I looked at your github page and found this line that I couldn't understand. Could you explain it a little more? I wasn't clear on how the mixing removes unwanted harmonics. "Using Arduino

Idea: new option to calibrate battery meter which allows user to measure actual voltage and set it as calibrated value. -- 73, Pedja YT9TP Checkout: https://pedja.supurovic.net/

Installed diode D2 with about 0.2V forward voltage drop, the actual measured voltage of the battery is 4.01V, Using the console command vbat on my modified software the voltage reading shows 3.718V.

Mark, Thanks, I already studied your design. Can you also do a comparative measurement with nanoVNA?

By popular demand, a dedicated script: https://github.com/oristopo/nVhelp/blob/master/html/nVcmd.py I needed to sort Python string handling anyway..

You might want to check out the VNA I designed http://www.github.com/profdc9/VNA which is a VNA based on the EU1KY bridge but similar to the NanoVNA with S11 and S21 capability. It also conveniently