Mastodawn

Doing some modelling of the 40m loop antenna I plan to put up. It looks like it'll be a bit of a sky warmer, with some directivity west-ish
The impedance isn't terrible.
#Hamradio #Antenna

sb arms & legs 1d ago

Anyone have any recommendations for GOOD 900MHZ antenna for #LoRa handhelds?

I don't want fake or untuned crap, but the more affordable the better - ideally a whip/duckie wouldn't be more than $20, maybe $50 for something exotic like a moxon.

There are a raft of us broke punks starting a mesh in an extremely rf hostile environment. Need all the help we can get.

#antenna #hf #meshtastic #meshcore

OERadio 3d ago

📡 Experimental 5-Band Vertical Groundplane – Vier Latten für ein Halleluja

Gastbeitrag von Jürgen, OE8RMJ Wer hier abkürzen und die Vorgeschichte überspringen will, kann direkt bei „Das Experiment" weiterlesen. Prolog Ich habe meine Lizenz seit April 2025.

🔗 https://oeradio.at/experimental-5-band-vertical-groundplane-vier-latten-fuer-ein-halleluja/

#Amateurfunk #HamRadio #OERadio #Antenna

Experimental 5-Band Vertical Groundplane – Vier Latten für ein Halleluja - OERadio

Gastbeitrag von Jürgen, OE8RMJ Wer hier abkürzen und die Vorgeschichte überspringen will, kann direkt bei „Das Experiment“ weiterlesen. Prolog Ich habe meine Lizenz seit April 2025. Frisch und voller Neugier auf das weite Feld, das da vor mir lag, wollte ich, angespitzt von den Unterhaltungen auf OE8XNK, schon bald wissen, was es denn mit dieser […]

OERadio

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Sérac 4d ago

In reach.
Gotschnagrat, #Graubünden #Schweiz
#Ski #alps #Outdoors #Mastendon #antenna

ℵ₀ 🏳️‍⚧️🏴‍☠️Apr 7

https://www.crowdsupply.com/krakenrf/discovery-drive
#krakenRF #SDR #RTLSDR #antenna
📶📡🔄 #radio

Discovery Drive

A motorized antenna rotator engineered for the Discovery Dish

Crowd Supply

Hacker News Apr 6

An open-source 240-antenna array to bounce signals off the Moon

https://moonrf.com/

#HackerNews #open-source #antenna #Moon #signals #space #technology #lunar #communication

Open Source meets Outer Space

Neural Apr 4

Asemograph, good vibes by Wen New Atelier, a duo made up of Kalen Iwamoto and Julien Silvano

https://neural.it/2026/03/asemograph-good-vibes/

#TAGS #antenna #signalprocessing #electromagnetic #transmissionart #soundfrequency #sound #soundart #soundartist #klangkunst #soundinstallation #soundartinstallation #soundscapes #acousticspace #sonicworld #vibration #scores #soundandvision

Kris Gainsforth - KB0STG Apr 1

I had a good day finally forcing myself to run an SWR test on a vertical Buddipole setup. After I get back from my surgery, next is trying 2 coils to see if I can get down to 80m. #hamradio #antenna

framboise314 Mar 31

Pas de place pour l’à-peu-près en RF ! 📡🛠️
Je refais le réflecteur de ma Moxon 868MHz (Constantine) : 1mm d'erreur, c'est trop pour la symétrie du lobe. Fil 1,7mm ajusté au boîtier PETG.
Bientôt le NanoVNA avant de sortir la colle T-9000.
#Meshtastic #LoRa #Maker #Antenna #DIY

Hackaday Mar 30

Using a Scientific Satellite for Passive Radar

https://fed.brid.gy/r/https://hackaday.com/2026/03/30/using-a-scientific-satellite-for-passive-radar/

Using A Scientific Satellite For Passive Radar

The basic principle of radar systems is simple enough: send a radio signal out, and measure the time it takes for a reflection to return. Given the abundant sources of RF signals – television signa…

Hackaday