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Re: New open source VNA released - excellent performance claimed
Oohh. that's everyone's first guess.. but think about it.. if you want to measure the S11 of a LNA, you can't put 50dB of attenuation in front of it. You put 50 dB of attenuation in the stimulus line,
By Jim Lux · #17791 ·
Re: Connect Antenna Trap to NanoVNA
There was an application note written for the SARK-110 VNA on measuring traps. The setup details on the analyzer are different but the method is the same....
By Roger Need · #17790 ·
Re: Wrong firmware - white screen
Eric, if DeFuSe demomshows your device is in dfu mode, your driver's are working. Make sure you're using the Upgrade (Flash) button and not the Upload (read device flash) function.? If you used
By Larry Rothman · #17789 ·
Re: New open source VNA released - excellent performance claimed
I would think attenuators and booster amps may as well be in the external cables. Not terribly familiar with all this, perhaps there are special tricks involved to measure something like s12 on an
By Jerry Gaffke · #17788 ·
Re: New open source VNA released - excellent performance claimed
yes, it's going towards the fieldfox type of capability, not the "bench VNA" - The latter would typically bring out the source and receiver inputs with a loop, so you could use different bridge or
By Jim Lux · #17787 ·
Re: Connect Antenna Trap to NanoVNA
I would probably test a parallel tuned trap as a single port, with the far end of the trap grounded. Should see the impedance head towards zero at the resonant frequency. But could also be done as a 2
By Jerry Gaffke · #17786 ·
Re: New open source VNA released - excellent performance claimed
That's a beautiful looking board layout, clearly done by somebody who knows microwave RF. If the spec's are anything like those stated, I'll probably buy one eventually. Whatever final form it takes.
By Jerry Gaffke · #17785 ·
Re: New open source VNA released - excellent performance claimed
Hope DisLord gets an engineering sample?
By aleks07111971@... · #17784 ·
Re: Wrong firmware - white screen
Only connect SWDIO, SWCLK and GND. NRST is not needed. Neither is VDD If needed force nanoVNA in DFU mode by connecting BOOT0 and VDD before switching on. -- NanoVNA Wiki:
By Erik Kaashoek · #17783 ·
Re: New open source VNA released - excellent performance claimed
I also interested in "engineering sample" with or without milled enclosure? Pada Selasa, 29 September 2020 18.12.10 WIB, Carsten Bormann <cabocabo@...> menulis: It is probably a quite limited
By Anton Moehammad · #17782 ·
Re: New open source VNA released - excellent performance claimed
Indeed - if there were a decent python+libraries on Android, it would be straightforward to move NanoVNA-Saver as a start. If you were *bold* - Java is sort of the native Android language, but I don't
By Jim Lux · #17780 ·
making impedance measurements
Here's a nice article on measuring components with a VNA, discussing the three test configurations - fixturing, error analysis, etc.
By Jim Lux · #17779 ·
Connect Antenna Trap to NanoVNA
Hello all... I'm new to VNA's, and need some guidance. What is the way to connect my NanoVNA-H to a dipole antenna trap so I can tune it, and read resonant frequency, Q, impedance, etc.? Thank you for
By ED - N1MVP · #17778 ·
Re: Calibration issue ?
Here they are, fresh from nanovnasaver after SOLTI calibration : NanoVna has been boxed with a pair of SMA to N adapters. 73 Federico ik3umt
By Federico - ik3umt · #17777 ·
Re: Current Firmware for nanoVNA #firmware
Thank's Klaus. Indeed, when I notice an update, I make changes here as well. -- *** If you are not part of the solution, then you are the problem. ( http://ha3hz.hu/ ) ***
By Gyula Molnar · #17776 ·
Re: Calibration issue ?
Post the graphs or the S21 files from NanoVNA Saver.
By Dragan Milivojevic · #17775 ·
Re: New open source VNA released - excellent performance claimed
That boom cost includes the milled aluminium enclosure? If so, that is a very good price. If available I would be interested in purchasing an engineering sample, without the case. I suspect that
By Dragan Milivojevic · #17774 ·
Re: New open source VNA released - excellent performance claimed
It is probably a quite limited amount of work to port the PC software to Android. Then simply sell a bundle of a cheap Android tablet (these are cheaper than the screens inside them :-) and the
By Carsten Bormann · #17773 ·
Calibration issue ?
Hi, new to this group. NanoVna ttrftech v. 0.5.4 NanoVnaSaver v. 0.3.7 I'm trying to use a home made fixture for testing chokes via S21 parameters, two short wires exiting VNA ports ending with clips
By Federico - ik3umt · #17772 ·
Re: Wireless remote control of nanoVNA-H
Yes, connection some. But in my firmware you can select current connection type (USB or Serial), speed in menu in any time. Can configure module from NanoVNA console. Can connect different device and
By DiSlord · #17771 ·