Spaceflight 🚀 · @spaceflight
1102 followers · 622 posts · Server techhub.social
Spaceflight 🚀 · @spaceflight
1102 followers · 622 posts · Server techhub.social
Winwaed · @Winwaed
23 followers · 47 posts · Server mastodon.online

I have also been running a . This is a receiver intended to detect Sudden Ionospheric Disturbances (SIDs) - typically from solar x-ray bursts. I've definitely picked up a couple but I recently replaced the monitor PC with a because Windows was too unreliable.
It has also forced me to clean up electrical noise from the house (typically dimmer switches).
An interesting side project was an EMI detector, which my son used as a ghost detector at Halloween

#raspberrypi #vlf #supersid

Last updated 3 years ago

Robert Hollingshead · @0xF21D
65 followers · 315 posts · Server infosec.exchange

/#LF/#MF spectrum waterfall recorded for 5 hours overnight with in the area. Unfortunately the time is incorrect but I started this around midnight, a few hours later a storm system came through. Used an -SDR and a modified MLA-30 active loop antenna in the attic.

The solid line around 0.060 (60 kHz) is . All the stuff on the right pat 0.50 (500 kHz) is the AM broadcast band.

There's harmonic/image of in there somewhere, probably due to a cheap setup but worth more experimentation to clean up, particularly needs better AM broadcast filtering (it's not supposed to show up). The signal path is <ActiveLoop>--<Power Injector>--<AM Band Filter>--<Upconverter - Ham It Up Nano>--<RTL-SDRv3>

#vlf #lightning #rtl #wwvh #wwv #gqrx #sdr

Last updated 3 years ago

Jacob Michelsen · @Jickelsen
39 followers · 57 posts · Server vis.social

Back in 2015 I made an installation for the world heritage site in , so I found it very interesting to see similar tech used to teach visitors about the workings of the Station.

It's a world heritage site on account of being the last operational long range mechanical radio transmitter, its design pre-dating vacuum tubes! It transmits using a big spinning alternator wheel to generate a 17.2kHz signal which can reach New York and beyond

#morsecode #radio #vlf #grimeton #tanumshede #rockcarving #ar

Last updated 3 years ago

Funker Tom · @hensys
478 followers · 3988 posts · Server social.anoxinon.de

On December 24th 0700 UTC Grimeton SAQ in Sweden will send a Christmas Message on 17.2 kHz.

alexander.n.se/en/saq-transmis

#cw #vlf #Grimeton #worldheritage #hamradio

Last updated 3 years ago

Winwaed · @Winwaed
14 followers · 36 posts · Server mastodon.online

Hobbies in recent yrs have included and . This past year I've been into & am a member of the Soc of Amateur Radio Astronomy.
So far I've been experimenting with - detecting whistlers from thunderstorms. As you can imagine, living in the S. Plains of the US are a good source!

I've also been operating a (Solar Ionosphere Disturbance) receiver but WinPC was unreliable so replacing with a . I'll post my progress & results!

#raspi #vlf #supersid #elf #radioastronomy #modelrailroading #homebrewing

Last updated 3 years ago

Winwaed · @Winwaed
24 followers · 47 posts · Server mastodon.online

Hobbies in recent yrs have included and . This past year I've been into & am a member of the Soc of Amateur Radio Astronomy.
So far I've been experimenting with - detecting whistlers from thunderstorms. As you can imagine, living in the S. Plains of the US are a good source!

I've also been operating a (Solar Ionosphere Disturbance) receiver but WinPC was unreliable so replacing with a . I'll post my progress & results!

#raspi #vlf #supersid #elf #radioastronomy #modelrailroading #homebrewing

Last updated 3 years ago