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Re: rf-demo-kit schmatic and BOM
Does anyone know of an SMA equivalent to this board? I expect it would be an order of magnitude more expensive, but u.fl connectors are only expected to live through <10 insertion/removal cycles. I am
By Brent DeWitt · #20657 ·
Re: measuring Capacitance or Inductance
Thank you for the responses. I think I was unclear. What I am trying to understand is how one relates the marked value of a component to what nanovna shows. Using DL5FA¡¯s item 8 inductor, my devices
By Ed Krome · #20656 ·
Re: measuring Capacitance or Inductance
The inductance won¡¯t change with frequency (to a first order approximation and especially over a somewhat narrow range). What will change is the reactance with respect to frequency. XL= 2*pi*F*L XC=
By Ray Anderson · #20655 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
Roger, Thanks for the suggestions. I have updated the firmware in my nanoVNA to v1.0.45 and everything is working fine now. I would like to try the new NanoVNA app (Windows) by OneOfEleven, but I'm
By gmendenh1947 · #20654 ·
Re: measuring Capacitance or Inductance
The inductance will change with frequency.? I use the Smith chart and the resistance and inductance are displayed at the marker frequency. Bob
By Bob Albert <bob91343@...> · #20653 ·
measuring Capacitance or Inductance
Concerning how to measure capacitance and inductance on the RF Demo board (or any capacitor or inductor), reference /g/nanovna-users/wiki/16592. I can get the curves shown in this
By Ed Krome · #20652 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
Why not try the latest version by DisLord (1.0.45) in the files section of this group. Some nice enhancements and it works with the new NanoVNA app (Windows) by OneOfEleven which has more features
By Roger Need · #20651 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
Sweeping normally. This is not the problem
By gmendenh1947 · #20650 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
Roger, I wanted to try the new features in v 0.8.0-20200620 released on Jun 19, 2020 by edy555 including the contributions of DiSlord. I posted looking for a solution and if it is a bug, I wanted to
By gmendenh1947 · #20649 ·
Re: rf-demo-kit schmatic and BOM
Hello Frank, I do not have a BOM, but some documentation: /g/nanovna-users/wiki/16592 73, Rudi DL5FA
By Rudi · #20648 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
Stimulus menu - pause sweep
By impala@... · #20646 ·
rf-demo-kit schmatic and BOM
Hello, I am having trouble finding a BOM and schematic for the NWDZ Rev-01-10 RF demo kit kit with google. I have the board with the LPF 30MHz on the top left corner. Could someone point me towards
By frank.eory@... · #20645 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
Why not try using Hugen's last firmware release or the one by DiSlord Roger
By Roger Need · #20644 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
SWR readings are normal using nanoVNA Sharp v1.02 on PC using USB interface, but nanoVNA SWR trace at bottom of screen with marker showing 1.0003:1 when actual SWR is 1.5:1
By gmendenh1947 · #20643 ·
Re: SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
My current configuration is attached.
By gmendenh1947 · #20642 ·
SWR trace stuck at bottom of display after firmware update to v 0.8.0 #firmware
I just updated my nanoVNA to version 0.8.0-20200620 firmware. After going through calibration the Return Loss, Insertion loss, and Smith traces all worked normally, but the SWR trace is stuck as a
By gmendenh1947 · #20640 ·
Re: Update firmware on Nanovna-f from V0.0.5
You are welcome. I am glad you had success. YouTube is also a great resource for this kind of thing in addition to many many other things. It is the second most popular "search engine" for a reason. I
By Kamryn Kant · #20639 ·
Re: Update firmware on Nanovna-f from V0.0.5
GM and Thanks. After looking into that page there is one thing caught my eye that no other documents said to do. Hold down the thumb wheel and turn the unit on, it goes into UDISK mode and you just
By Bob Lukaszewski · #20638 ·
Re: SWR measure comparsion on different VNA
OK, thank you very much for all info DiSlord. Regards, Jos Op 12-2-2021 om 05:06 schreef DiSlord:
By Jos Stevens · #20637 ·
Re: Tuning 2M duplexer
I just learned how to take an S21 measurement at HF frequencies. I used a 1960's Drake "Low-Pass Filter" (52 ohm in/out) that reduces the higher harmonics of HF rigs. It used to be called the "TVI"
By Barry K3EUI · #20636 ·