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Re: How to buy NanoVNA safely?
Owen cannot compare a $10k VNA against a $50 one I am happy with the cheap and cheerful H version for basic understanding and experimentation To expect lab grade performance is ridiculous John ve3ips
By John · #7545 ·
Re: Free diodes for battery indicator #battery
I second Don's question. Email?
By Nulluser00@... · #7544 ·
Re: How to buy NanoVNA safely?
On Thu, Nov 28, 2019 at 06:14 PM, Dejan Corovic wrote: This guy is really going deep into NanoVNA-H, finding some problems ================================================================ Yes Owen is
By hwalker · #7542 ·
Re: How to buy NanoVNA safely?
The author of those articles Owen Duffy is very knowledgeable and I have learned a lot from reading his blog. Sadly he has a penchant for criticizing others and this detracts from his posts. What he
By Roger Need · #7541 ·
Re: How to buy NanoVNA safely?
This guy is really going deep into NanoVNA-H, finding some problems https://owenduffy.net/blog/?p=16058 https://owenduffy.net/blog/?p=15996 https://owenduffy.net/blog/?s=nanovna
By Dejan Corovic · #7540 ·
Re: How to buy NanoVNA safely?
Dejan, Could you reference where you read that the NanoVNA-H is full of hardware issues? The reason I ask is because the NanoVNA-H is hugen's latest release of the original NanoVNA and the only
By hwalker · #7539 ·
How to buy NanoVNA safely?
I want to buy NanoVNA but I am confused with so many vendors and versions of firmare. I would like to buy on UK eBay so I can return it if it's clone. I read about most recent version NanoVNA-H that
By Dejan Corovic · #7538 ·
Re: Free diodes for battery indicator #battery
How to email you? the email address is blanked out after @.
By Don · #7537 ·
Re: NanoVNA Noise improvements. Hugen79's NanoVNA Github Issue #14 #filtering #noise #improvement #hack #circuit
When will the V2 design be manufactured and ready for sale? Any name yet for the product?
By Roger Need · #7536 ·
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 ·