GSaaS - scalable service allows you to follow satellite dream without building and operating own Ground Station. Satellite rotators' provider also here!
Polska
Joined October 2010
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Ground station setup: tweaking RF and control cables routing to achieve full 0-360° azimuth and 0-180° elevation of antenna coverage for aqusition as many data from the orbit over each pass as possible. If you've ever tried this, you know it's pretty tough. Happy tracking! 📡
I can confirm that Cosmos-2612 is tailing ICEYE-X36 like a cat after a mouse - though this cat ought to realize that an even larger predator is likely keeping an eye on it 👀
Intercepted military HF communication on 5135 kHz (USB). The best detail? At ~1:02, you can hear a staff telephone ringing in the background ☎️ This is proof of a "hot mic" – the order is being read live by an operator from a command center, not a speech synthesizer.
It's a pleasure to listen to an HF radio station while working on your computer, using modern tools like LLM, the cloud, etc., something that was unthinkable when such stations were the only means of live and long-distance communication. Now with radio enclosed in a matchbox!
Rumba, the second of four Cluster satellites, reentered the atmosphere on 22 October 2025. Link to the article below. @ESA_Cluster
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Nice set of antennas! Anyone know and share details?
York Space Systems has finally delivered the first batch of satellites for the SDA's Tranche 1 Transport Layer! Launch is set for NET Sep. 10. Each batch comprises of 21 satellites, with York, Lockheed Martin, and Northrop Grumman each delivering 2 batches businesswire.com/news/home/2…
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A bit of RF teardown for SDR geeks. Two original Ettus USRP1 with four extensions cards which each can operate from 0.8-2.3 GHz.
The RF Cat frame is a CNC machined, black aluminum plate. Under the vibration-isolated tablet unit is mounting plate to compose dedicated set of devices. Here SDRs AirSPY R2 and HF+. Simple, solid, lightweight with a frequency range that allows analysis of signals in the field.
A major contribution to wave-particle duality. Perception of the nature of matter changed forever.
Yes, J.J. Thomson and G.P. Thomson were family related—they were father and son. J.J. Thomson won the Nobel Prize in Physics in 1906 for discovering the electron as a particle, while his son, G.P. Thomson, won the Nobel in 1937 for showing electrons also behave as waves, demonstrating wave-particle duality.
Interestingly, they are one of only four father-son pairs to both win Nobel Prizes in Physics, highlighting their remarkable scientific legacy. Their work beautifully illustrates the progression of ideas in atomic physics across generations.
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Make Maneuvers Great Again! What’s a beautiful visualisation of the satellite close approach - must see!
Over the weekend, USA 324, maneuvered into the 152 °E neighborhood—“checking out” its new neighbors TJS-16 and TJS-17.
USA 324 made two close passes— ~17 km to TJS-16 (26 Apr 14:45 UTC) and ~12 km to TJS-17 (29 Apr 13:40 UTC)— before settling down near 152.8 °E.
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1. Frequency
Biomass SAR operates in the UHF band (435 MHz, ~69 cm wavelength), ideal for penetrating forest canopies to measure tree height and above-ground biomass.
This is just the beginning of the Biomass mission!
Over the next week, teams at ESA mission control will work around the clock to make the satellite ready for life in Earth orbit.
The greatest challenge will be to carefully unfold Biomass’ 12-meter-wide wire mesh reflector, shaped like an umbrella.
The satellite’s unique deployment sequence was designed to ensure that these complex structures all deploy in the safest possible way.
Another ground station designed and built by Spacecomm.Cloud. 3m mesh dish for S-band and two helixes for UHF, all based on steel construction - dedicated setup for CAMK Institute in Warsaw camk.edu.pl/en/
MPS? I mean Moon Positioning System 🌚
We officially used GPS on the Moon!
The LuGRE payload on #BlueGhost acquired & tracked Global Navigation Satellite System (GNSS) signals on the Moon! These results suggest that GPS signals could be used by future exploration missions – like @NASAArtemis.
go.nasa.gov/3DguHxD
ALT A visualization of LuGRE's world records in transit to, in lunar orbit, and on the Moon. The graphic shows the progression from Record 1 at 205,674 miles to Record Two at 243,000 miles and then Record 3 on the Moon. The Earth in the top left corner and Moon toward the right side.
My RF Cat field frequency monitor based AIRSPY R2 from @lambdaprog playing with nearby GSM activity with modified GNSS antenna connected. I’m surprised the broadband of this antenna just after filters removed and bypassed.
One of my products is a dual S/X-band feed. It can be configured just for the S-band range, here LHCP. When the ground station operator decides to use X-band, the appropriate detail will be installed. Adding relay makes unit switchable between LHCP and RHCP on the fly. 📡〰️🛰️
“RF Cat” signal monitoring is going to the final stage. Main chassis’s plate is now CNC cut and bent aluminum. Cost optimum unit is equipped with two AIRSPYs to cover frequencies from the bottom of HF to the 1800 MHz from @lambdaprog and GPS for exact measurements’ locations.
