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Re: Brief NanoVNA-H vs NanoVNA_F comparison #nanovna-f
You are entitled to your opinion of course. But I would like to know who you actually are? On this occasion I do not totally agree with you. I am sure that you don't reside at Bag End so who are you?
By Conrad, PA5Y · #8692 ·
Re: quick measuring cable characteristic wave resistance
I experimented with this Lambda/8 method using the program TLD (transmission Line Details) and got within .4 ohms of the cable impedance after doing a number of different tests. TLD contains the
By Roger Need · #8691 ·
Re: Brief NanoVNA-H vs NanoVNA_F comparison #nanovna-f
He wasn't just banned because his criticising the connectors, he was banned also because of his obnoxious and overbearing posts.He seems to have his own agenda besides shamelessly promoting his own
By Bilbo · #8690 ·
Re: Plate RF Choke Measurements #measurement
Yes, agree. I will re visit this and with another choke as I need one in the input, grid side of the amp. 73' Alan
By alan victor · #8689 ·
Re: quick measuring cable characteristic wave resistance
Hi, wave-theory of open transmission-line (Z_l = inf) is Z = -jZ_line*cot(beta*len_line). If the line has a length of the line is labda/8 this gives cot(pi/4), which is one. Thus we have Z = -j*ZLine
By Martin Rickes · #8688 ·
Re: Wait for V2 design or but current model on ebay?
On Fri, Dec 27, 2019 at 06:34 AM, <nanovnagroup@...> wrote: ¡­.. I chose this listing as the seller seemed to have overall good feedback rating, and the unit seems to include all the
By hwalker · #8687 ·
Re: quick measuring cable characteristic wave resistance
Hi Hans, Thank you vm for for sharing your method with us. I do not know which is the explanation behind this method but I can confirm it is working very well. I have 2 pieces of professional made
By Corneliu · #8686 ·
Re: Plate RF Choke Measurements #measurement
Hi Alan, thank you for the info. I think it is a good thing to save the measurement files, they are taking very little space and can be re-analyzed in the future with various software tools. Also can
By Ady, YO2NAA · #8685 ·
Re: First PCB pictures of the V2
I am new to this group and this is only my second post. I am happy to have found this specific thread as I was going to order what looks like one of the latest units of the original design NanoVNA
By nanovnagroup@... · #8684 ·
Wait for V2 design or but current model on ebay?
I am new here and this will be my first post. I have been reading some of the threads of this group, and came across the one bellow that is dealing with the release of the new V2 version of the
By nanovnagroup@... · #8683 ·
Re: quick measuring cable characteristic wave resistance
Do you have any citations for this method?
By Nick · #8682 ·
Re: Brief NanoVNA-H vs NanoVNA_F comparison #nanovna-f
I'm sure the developers would appreciate your suggestion for new firmware features and extended frequency range. I expect many users would appreciate these features!
By hwalker · #8681 ·
Re: errors of "error" models
#95.5: [SOLVED] : The "Mystery" of the Identical Results Using Different VNAs Hello, Allow us, please, to announce that in the sequence of our three guesses in time : "Moebius" [#95.1], "Hardware"
By gin&pez@arg · #8680 ·
Re: nanovna cases #enclosure
Maybe you can share with us some files that one can convert to .stl to 3D print? I like the case very much. Cheers! 73 de Luis, CT2FZI http://www.ct2fzi.net <http://goog_717545661>
By CT2FZI · #8679 ·
Re: Brief NanoVNA-H vs NanoVNA_F comparison #nanovna-f
Herb, You might like to post questions about the NanoVNA-F in its own group: /g/nanovna-f I'm sure the developers would appreciate your suggestion for new firmware features and
By David J Taylor · #8678 ·
Re: Plate RF Choke Measurements #measurement
Hi Ady. I only did a screen capture. The measurement and cal are one port only. So I would have only S11 data available. The main thrust of the post is you need to capture a reasonable number of data
By alan victor · #8677 ·
Re: Plate RF Choke Measurements #measurement
Dear Alan, thank you for sharing the measurements. I assume you used NanoVNA-saver. Can you please share the s1p or s2p files if saved? TNX, 73 Ady YO2NAA
By Ady, YO2NAA · #8676 ·
Plate RF Choke Measurements #measurement
Re visit this topic as I am looking at plate chokes for a tube amplifier. I used 1010 points from 100 kHz to 30 MHz. There are 3 chokes shown here. The older National R175 shown in a prior post with
By alan victor · #8675 ·
Re: errors of "error" models
#95.4: On the Analogy of Difference of Ratios but not of Ratios Hello, - - - - - - - - - (c) gin&pez@arg (cc-by-4.0) 2019 : start - - - - - - - This may be the result of measuring only levels and of
By gin&pez@arg · #8674 ·
Re: nanovna cases #enclosure
That case looks really nice. Looks like it will keep a lot more dirt and grime out of the NanoVNA. Looking forward to hearing a price on them I'd be interested if the price isn't too high.
By Gigabyte · #8673 ·