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Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14 #filtering #noise #improvement #hack #circuit
Gentlemen, what you have at https://github.com/hugen79/NanoVNA-H/issues/14 Noise improvements. Outlined in found that the power input at the mixer ICs is lacking capacity, causing spikes and spur at
By Gyula Molnar · #7535 ·
Free diodes for battery indicator #battery
Free (in the USA) diodes available for battery indicator I have 99 "extra" 1N4148WS diodes available. If you want any, FOR FREE IN THE USA, send me a self-addressed stamped envelope and how many
By Roy Ashkenaz · #7534 ·
Re: retrofit a bigger screen
hooray at last,the answer i needed,thanks eric 73
By paul larner <quadzillatech@...> · #7533 ·
Re: retrofit a bigger screen
Unless I misread the diagram those displays have 40 pins. Good luck on your search. Did you check that they use the same controller?
By Dave VE3LHO · #7532 ·
Re: nanoVNA Partner #nanovna_partner
Thank you, Hans -----Urspr¨¹ngliche Nachricht----- Von: [email protected] <[email protected]> Im Auftrag von neb40gsm via Groups.Io Gesendet: Donnerstag, 28. November 2019 11:55 An:
By DJ7BA · #7531 ·
Re: retrofit a bigger screen
You need the resistive touch panel.
By Larry Rothman · #7530 ·
Re: retrofit a bigger screen
yes they do,i need to know if i need the resistive touchscreen or the capacitive one!
By paul larner <quadzillatech@...> · #7529 ·
Re: retrofit a bigger screen
Do the LCD modules you selected have 18 pin connectors as described in the wiki? -- NanoVNA Wiki: /g/nanovna-users/wiki/home NanoVNA Files: /g/nanovna-users/files
By Erik Kaashoek · #7528 ·
Re: retrofit a bigger screen
Calm down Paul! No one can tell you which one is better because it's personal preference. Besides, there is only one person who attempted to change the display and that info is in the Wiki/Files
By Larry Rothman · #7527 ·
Re: Cables
John, If you're sweeping an antenna that's in close proximity to the VNA, leakage from the cables is probably not going to be a limiting factor. Other aspects of cable quality (impedance bumps at
By Dana Whitlow · #7526 ·
Re: Measure S11 and S22 for active devices
Hi aa_Talaat Sort of right. For the input impedance measurements you may calibrate Ch0 on the output side the inserted attenuator. 40dB is a bit tough as it will introduce larger measurement
By Kurt Poulsen · #7525 ·
Re: Measure S11 and S22 for active devices
There is limited output power control on the nanoVNA you can use (limited, no 30dB control) Use a terminal emulator to connect to the nanoVNA and you can use the "power" command to 4 levels of output
By Erik Kaashoek · #7524 ·
Measure S11 and S22 for active devices
I build a common emitter amplifier based on BFP420 BJT, and would like to measure its gain and input and output impedance. As the gain should be within 25dB, so I connected a 40dB 50 ohm input/output
By aa_talaat@... · #7523 ·
Re: nanoVNA Partner #nanovna_partner
Hi, Thanks to all who appreciated the software. Consider it as my contribution to the group. Kind regards, neb
By neb · #7522 ·
Re: Is your RAW traces healthy? #stability #shielding
bug reports for this gcc bug are already exists. I just fixed NanoVNA code to avoid it.
By QRP RX · #7521 ·
Re: host software for nanovna, for linux users.
Hi Rune, please don't think that I am referring to your own excellent software. I know it works when all the bits are in the right place ;) What I refer to is the general disease of of always needing
By Andy <punkbiscuit@...> · #7520 ·
Re: Is your RAW traces healthy? #stability #shielding
And file a bug report?
By Jim Allyn - N7JA · #7519 ·
Re: retrofit a bigger screen
Isnt it amazing how i cant get an answer to a simple question!,if i wanted to use a tab i would have asked that!!,pointless as my tab doesent support the app,just wanted to know what screen to get out
By paul larner <quadzillatech@...> · #7518 ·
Re: Is your RAW traces healthy? #stability #shielding
just installed gcc and tested it. The root of cause is GCC compiler bug. It produces garbage code. I will implement workaround for this GCC compiler bug.
By QRP RX · #7517 ·
Re: host software for nanovna, for linux users.
Hi Andy, Python 2.7 is end-of-life in little over a month. Developing new software using that cannot reasonably be encouraged. If anyone wants to port NanoVNA-Saver to other platforms or languages, it
By Rune Broberg · #7516 ·