#NanoVNA
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condmatmtrlsci-bot.bsky.social
Reo Fukunaga, Ryunosuke Takahashi, Tetsuro Ueno, Hiroki Shoji, Yoshihiko Togawa, Hiroki Wadati: Development of a Ferromagnetic Resonance Measurement System Using NanoVNA https://arxiv.org/abs/2512.10302 https://arxiv.org/pdf/2512.10302 https://arxiv.org/html/2512.10302
December 12, 2025 at 6:42 AM
waxpraxis.org
Oh no… I did a new thing, and it worked, and now I have IDEAS! 😂 I made my first antenna today, a simple vertical dipole for the 2m band. It’s literally a cheap broom handle, PVC, wire, and zip ties, but it works great!
A vertical dipole antenna for the 2m amateur radio band A NanoVNA H4 device showing the analysis of an antenna over the 2m band. It’s very resonant and has a low SWR.
December 12, 2025 at 1:57 AM
mkb.mastodon.social.ap.brid.gy
Or not. I was getting wonky readings and discovered the NanoVNA I have is only good up to 1.5Ghz. Units that go into BT/Wifi frequencies cost 3x or more what I paid for mine. If I get a nicer one, will I use it enough to justify the cost? I'll have to think on it.

D'oh.
December 6, 2025 at 3:06 AM
mkb.mastodon.social.ap.brid.gy
NanoVNA testing bluetooth antennas for a rooftop #meshtastic node.
December 6, 2025 at 2:14 AM
kn9.foo
I have a new toy. It’s definitely not useful for my job - I would need a much bigger one to overcome the loss in ~300 meters of rigid transmission line - but I should probably fine-tune the Diamond NR770 antenna I’ve had on three different vehicles now.
A NanoVNA (vector network analyzer) lying flat on a desk displaying measurement graphs
November 26, 2025 at 6:58 PM
wigglepig.bsky.social
Indeed, I have had this fun too but I find that tuning up the antenna using a nanoVNA before hooking the set up works best and is much quicker really.
November 22, 2025 at 1:43 PM
jj1guj.jiskey.dev.ap.brid.gy
nanoVNA、12/7に届くらしい
November 19, 2025 at 2:50 PM
raspberry-pi.activitypub.awakari.com.ap.brid.gy
Работаем c NanoVNA-H 4 через USB Если вы уже работали с векторным анализатором NanoVNA, то скорее всего использовали д...

#радио #сделай #сам #радиосвязь #антенны #приемник #плата #анализ

Origin | Interest | Match
November 19, 2025 at 10:14 AM
n8dmt.mastodon.radio.ap.brid.gy
Slow Work Day: Let’s sort ferrite! Made a quick ferrite material sorter using NanoVNA-H4 and a two-turn test loop. Ended up finding at least four material types. Now labeled in separate bags and ready for (easier) future use!
#hamradio #emiemc #sortalltheparts
Close up of the two-turn test loop attached to the NanoVNA-H4 analyzer measuring S21. Normalized this as my calibration reference. Desktop photo showing many ferrite clamp-on parts ready for test. Some are labeled with part numbers (and material types), others are not marked in any way... Example for testing a type 31 core. Blue curve is the DUT trace. Red is a previously stored trace using a type 43 core. Phot showing ferrite sorted into three major piles. Not precise, but better than I had before. The rectangular clamp on in the upper left (from Radio Shack long ago) was the worst of those tested today. Would need many turns through it to attenuate common mode signals. Ugh!
November 17, 2025 at 8:50 PM
skobkin.gts.skobk.in.ap.brid.gy
Пробовал сегодня делать антенны Moxon.

Понимаю почему их полюбили - они очень несложно делаются, особенно при наличии 3D принтера на котором можно напечатать каркас, в котором потом прокладывается проволока.

Как всегда, при изготовлении по чужим расчётам […]

[Original post on gts.skobk.in]
DIY Moxon antenna for 868 MHz. NanoVNA measurements of DIY Moxon antenna. SWR: 1.05. Impedance: 52 Ohm.
November 11, 2025 at 8:50 PM
blueday.mstdn.blueday.blue.ap.brid.gy
#買っちった
OWON HDS2102S / tinySA Ultra+ ZS407 / NanoVNA-H4
November 11, 2025 at 12:52 PM
radiocb.bsky.social
BricoCB
De Eric Goujon (Francia):
9 espiras sobre diámetro de 6 cm, conectado en la espira 3. El radiante vertical ajustado a NanoVna es de 5,5 metros. ROE 1.15. Un hilo vertical de 2,75 metros desciende por debajo (contrapeso, masa virtual)... recibe muy bien, y buenos contactos en DX.
November 5, 2025 at 12:46 AM
zombiecube.bsky.social
#Hamradio glitch solved (?). Problem was (?) with the pass-through connection in my window. Changed connectors and now the SWR is what it used to be.

All hail the mighty nanovna for troubleshooting this sort of thing.
November 2, 2025 at 5:47 PM
r-meshtastic.at.shendrick.net
Does an adapter exist to adapt an IPEX to SMA coax cable to a NanoVNA? https://old.reddit.com/r/meshtastic/comments/1ok83j5/does_an_adapter_exist_to_adapt_an_ipex_to_sma/

#meshtastic
October 30, 2025 at 6:51 PM
tslycha.bsky.social
Input stage pic below. Drove it with frequency generator at 22MHz but I don't have a good way of telling how well impedance matched either side is. I guess I could pick up an SWR meter for the output side and learn more about using the NanoVNA which could help with analyzing the input side?
PCB with label "Input" next to three terminal device which looks like it says something like S862089Z P 2 8 r
October 29, 2025 at 8:34 PM
inunyann.bsky.social
nanovnaきちゃ

ガチの人じゃない（？）のでmcuにつなぐlpfやbpfの特性見たりとか、共振周波数調べる用途ぐらい

smaコネクタ持ったハードも当然持ってないので、同軸の長さを見たり、cal kit付け替えてsmith見て満足した
October 23, 2025 at 5:44 AM
sarahftduration.bsky.social
... 🤷‍♀️

I need some more studying to understand ALL this, but I gather it's "okay" for the 2 meter band. This is a fan dipole with a second leg for the air band, which is probably going to get cut down for use on the 70 cm band instead, as my cross dipole works surprisingly well for airplanes.
Screenshot from NanoVNA-Saver app which shows an antenna analysis with lots of graphs and numbers.
October 22, 2025 at 3:54 PM
r-meshtastic.at.shendrick.net
Am I testing my antenna wrong with my NanoVNA? https://old.reddit.com/r/meshtastic/comments/1od87xt/am_i_testing_my_antenna_wrong_with_my_nanovna/

#meshtastic
October 22, 2025 at 1:27 PM
inunyann.bsky.social
質感だけの話

RG316と174どっちも現物持ってないのですが質感(主に曲げやすさ)の違いを知りたくて見つけた動画
違いがよくわかりました

どちらも曲げられるけど316はそれなりに剛性がある
動画の途中でも曲げて(捻られて？)テーブルに置かれたあと、自分で立ち上がりながら戻っていくシーンが写ってるからそれなりにクセがあるなと思った

机の上でnanovna使う時のケーブルとして第一選択は316だけど、比較的低周波数帯用には取り回しのしやすい174を考えていて、どのぐらい取り回ししやすさに差があるんだろうと思ってたのが解決した

www.youtube.com/watch?v=cpEp...
The Ultimate Showdown: RG-316 vs RG-174 for HF Ham Radio!
YouTube video by TheSmokinApe Ham Radio
www.youtube.com
October 21, 2025 at 8:46 AM
inunyann.bsky.social
お誕生日近いからじょじょに？色々買い始めていて…というよりとーくんで買う細かいものなくなってきたからだんだん大きな？もの買うようになってきてて、この前のスポット溶接機に続いて、昨日はLCRメータが届きました！
そして今朝は昨日とーくん3800えんぐらい突っ込んで買ったnanovnaが発送されたのを見て少し安心していたところです…！2000円ぐらい自費払いました
某所で買う大きめなのはたぶんこのぐらい（注文キャンセルされたらとーくんどうしようかなと思ってたぐらいだから）
あとは国内通販で…と思ったけど、大きなものではなかったです…秋月さんで細かいものをそれなりに買うと、それなりになるからね（？）
October 18, 2025 at 1:37 AM
r-meshtastic.at.shendrick.net
I got a NanoVNA today. The stubby antennas that come with everything? They suck. Replace them first thing. https://old.reddit.com/r/meshtastic/comments/1o7wx2j/i_got_a_nanovna_today_the_stubby_antennas_that/

#meshtastic
October 16, 2025 at 4:51 AM
r-meshtastic.at.shendrick.net
NanoVNA adapter to test ipx pigtail->antenna as assembly https://old.reddit.com/r/meshtastic/comments/1nz8b3x/nanovna_adapter_to_test_ipx_pigtailantenna_as/

#meshtastic
October 6, 2025 at 3:27 AM
lab401.bsky.social
📡 The NanoVNA is open-source with many versions — Lab401 stocks the DeepVNA v3.2 for top-tier build, better UI/UX, RTC, & powerful S21 filter measurements! l.lab401.com/1zJx0
#NanoVNA #DeepVNA #RFtools #SDR #IoT #TechTools #Lab401 #pentesting #infosec
October 3, 2025 at 1:01 PM
r-meshtastic.at.shendrick.net
I got a nanovna, but I'm not sure how can I use it for RP SMA antenas... https://old.reddit.com/r/meshtastic/comments/1nrc9z1/i_got_a_nanovna_but_im_not_sure_how_can_i_use_it/

#meshtastic
September 26, 2025 at 8:51 PM