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thebaldgeek

Bald Aussie geek living in SoCal.

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thebaldgeek takes a few photos and posts them to Instagram.
Click on a photo to go to the Instagram page and read any notes on the photo.

thebaldgeek

24 hours of ADSC aircraft tracked from our dish in

24 hours of ADSC aircraft tracked from our dish in the backyard and our feed from Australia (same size dish and very similar setup as here). So that's 98W and 143E satellites all on the one map.
C-Band data is a tough nut to crack, but oh so rewarding.
BTW, we feed all this data to ADSBExchange, so you can view it unfiltered.

#ADSC #ADSB #ADSBEX #adsbexchange #avgeek #aircraft #aviation #satellite #inmarsat #satellitedish #sdr #rtlsdr #jaero #acars #vrs #oceanic #flight #aircrafttracking #geek

This is 98W (Inmarsat 4F3) C-Band ground station.

This is 98W (Inmarsat 4F3) C-Band ground station. From here we get aircraft position (ADSC) and messages (ACARS) from around 1/3 of the planet.
The dish tracks the geostationary satellite over both axis using Node-RED and an Opto22 controller.
It has a GPSDO modified feed to give it the frequency stability to decode 1200 burst aircraft data.
#adsbexchange #adsb #adsc #acars #avgeek #aviation #radarbox #flightaware #flighttracking #aircraft #satellite #inmarsat #nodered #satellitedish

More of a sigh than a cheer... I had been using th

More of a sigh than a cheer... I had been using the SDRplay v0.7 distro all this time for my testing. Swapped to PiSDR this arvo and BOOM, 15 minutes later, Jaero decoding 10500 ACARS.... I have no idea how they broke the sound on that build, but they sure did.
Now the sad news... I can only run around 4 to 5 Jaeros before the decode rate takes a hit. The Pi is mighty, but not SatCom mighty.

#jaero #rasperrypi #cubicsdr #sdrangel #pisdr #satcom #inmarsat #acars #adsb #adsc #sdrplay #rsp1a #rtlsdrblog #rtlsdrv3 #linux #iamnotaprogrammer

On the fence about writing this up or not... You a

On the fence about writing this up or not... You are looking at roughly 19 hours solid work. Jaero running on a Raspberry Pi. Only it's not... CubicSDR uses alsa and Jaero uses Pulse, and I can't get the two to play nice with a virtual audio cable... So. Very. Close.

#avgeek #satcom #jaero #rasperrypi #cubicsdr #sdr #rtlsdr #sdrblog #rtlsdrblog #rtlblog #vac #rsp1a #sdrplay #inmarsat #linux #programming #compiling

Testing each of the helix antennas against an actu

Testing each of the helix antennas against an actual Inmarsat signal, in my Socal location, that's 98W.
Also taking the opportunity to test out a new (March 2021) build of Jaero before we roll it out to all our SatCom computers.

#jaero #avgeek #inmarsat #satcom #antenna #helix #3d #3dprinting #acars #haveglass #adsb #ADSC #adsbexchange #sdrsharp #rtlsdr #sdrblog

Finally got a NanoVNA. Why O why did I put it off

Finally got a NanoVNA. Why O why did I put it off this long? Such a great bit of kit.
Tested and tweaked all my 7 turn helix 1.5GHz antennas for aero SatCom ACARS.

#nanovna #vna #acars #adsb #avgeek #antenna #satcom #inmarsat #nodered #adsbexchange #opensky #swr

7 turn helix for L-Band Inmarsat aero SatCom. Got

7 turn helix for L-Band Inmarsat aero SatCom. Got a bunch of guys on the ACARS / VDL2 group that want to buy them.
The stainless steel base was the hardest part, burnt 3 drills. 3D printing by @wizradical from a design off thingverse.
They perform better than the RTLSDR V2 patch antenna, but are harder to mount outside (most of the users are putting them in a flowerpot).

#adsd #adsc #acars #satcom #inmarsat #avgeek #osint #sdr #rtlsdr #nooelec #thingverse #3dprinting #antenna #helix

I found this Luna lander on Twitter at random, fee

I found this Luna lander on Twitter at random, feel in love with it, but it was too small (go big or go home, right?) So my son @wizradical worked his mad math and CAD skills on it then spent almost 48 hours printing it for me.
Totally love it. Great upgrade to the living room.

#3d #3dprinting #ender3pro #lunalander #3Dmoon #splicer #geek #moon #led

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