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In case anyone is interested in the Spectrum Lab software mentioned below, I found it here: https://www.qsl.net/dl4yhf/??? This is a very nice site - lots of goodies! ...Larry

Hi Bob,You can buy several chips at a time( like 5pc) from China or you can do a transplant from a cheapo power pack from a dollar store as they sometimes use the same chip. Have a look at this post:

I will try to sort some light-weight filter I glued nanoVNA shell command Python script: https://oristopo.github.io/nVhelp/html/nVcmd.py .. with a bash script to get 100 values at some frequency: $

Seems a good choice, if DIY unit parts costs exceed half that, and the intent is actual use vs fiddling.

Hi The RFzero may be exactly what you are looking for: http://www.rfzero.net/ The RFzero? board is an Arduino compatible GPS controlled Si5351A RF signal source. The typical use of the RFzero? is

Thanks. Having a really good? day full of seniors moments. Did exactly as above and got one for a phone to cut up when the new screen arrives. -- Terry VK5TM https://www.vk5tm.com ( https://vk5tm.com

You can get 5 pieces of IP5303 for less than 2$ shipping include on Aliexpress

Hi Rich - Oops, I first asked for cubic fit, but gnuplot was not converging well, so dropped back to quadratic, which IMO fit well enough to estimate RMS noise. I habitually use cubic for piece-wise

Hi All, Most likely out of the price ball park but I have just ordered a moRFeus - RF Upconverter and Downconverter, Wideband Mixer and Signal Generator. https://othernet.is/products/morfeus-1 $99.00

Tcxo-s have long and short term drift. Short term drift better. Many precision time signal source available on shortwave. Easily measure drift if you have good ssb receiver and computer. Tune 1 khz

This is actual for simple crystal oscillator with large error. But NanoVNA uses TCXO which has temperature compensation and small error. I don't think that it will be easy to add correction for TCXO.

Get screen protector for any cell phone that is large enough and then cut it to right size for NanoVNA. -- 73, Pedja YT9TP Checkout: https://pedja.supurovic.net/ https://yu1abh.uzice.net/

Reference clock source frequency error easily compensate by software in firmware or with external program. i requested it.

In the USA the Dollar Tree stores often have large screen protectors that are labeled for some device but may be adapted ...? kd4e

So it seems that the IP5303 should be replaced.? I opened the unit and found it but don't know where to obtain a replacement part.? My usual sources have no listing of this.? The only data sheets I

So does anybody have a link to where to get screen protectors? I've just had to order a new screen for my NanoVna.

/g/nanovna-users/topic/nanovna_does_not_want_to/32846852

Raymond Domp Frank wrote: I have found that the best and most accurate pointing device to use with the Nano is the stylus from an old Panasonic Toughbook. That was a hardened laptop series that are

Where is this related topic?? I'm not too good with the seup here. Bob

many peoples reported issues with IP5303 charge controller chip. You can find related topic here. It has some workaround for bad IP5303