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Radio & Nukes 🇺🇦 Profile picture
Radio & Nukes 🇺🇦
@HamWa07
🇺🇦 Critical Communications, Amateur Radio, Military Comms, Nuclear Weapons, Physics https://t.co/OnzWgpxfew https://t.co/S40dnZNbX9 Signal
Jan 31 • 9 tweets • 6 min read
Did you know, it is feasible to design a fiber optic hydrophone system that resembles a standard undersea cable 🚢🔊. By integrating hydrophone sensors into the cable structure 🔧 and using repeater housings or extra housings to conceal the sensors 📦, the system can be made to blend seamlessly with conventional undersea cables.

Potential Design Features

1. **Sensor Integration**: Hydrophone sensors could be embedded along the optical fiber at regular intervals within the cable 🔍. These sensors would not significantly alter the cable's external appearance 🕵️‍♂️.

2. **Repeater Housings**: The use of repeater housings, which are already a standard component in undersea cables to boost signal strength 📡, can provide an ideal cover for the hydrophone sensors. Extra housings could also be added for additional sensor concealment 🧑‍🔧.

3. **Durable Casing**: The entire setup can be encased in the same durable, waterproof material used for standard undersea cables to ensure protection and longevity ⚒️💧.

4. **Stealthy Deployment**: By mimicking the appearance and functionality of regular undersea cables, the hydrophone array can be deployed covertly 🤫, making it difficult to detect and tamper with 🔒.

This approach allows the system to perform its acoustic monitoring duties without drawing attention 🕵️‍♀️, making it suitable for covert operations like submarine detection and underwater surveillance 🚤💦.Image opg.optica.org/directpdfacces…Image
Oct 20, 2024 • 6 tweets • 5 min read
Some background on 3D printed Luneberg lenses. Most of the designs seem to use FormLabs 3D printers vs the less expensive filament style printers.

Some links.
Wiki
en.m.wikipedia.org/wiki/Luneburg_…

Here is a python script to design a Luneberg lens.
github.com/jboirazian/Lun…

Research paper above: tentzeris.ece.gatech.edu/CRFID21_Bahr.p…

Specs of a few COTS radar reflectors: mayurakshi.net/products.htmImage
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Image Picture yourself back in 1853. Now design a Luneberg lens using theory, oh and you know only a few of the world’s best scientists are also hard at work on this problem!

Someone anonymously sent the solution in 1954 just one year after these problems were posed!

Oh and Rudolf Karl Lüneburg won’t be born until 1903!

Stay tuned!

books.google.com/books?id=1xoAA…Image
Mar 1, 2024 • 11 tweets • 4 min read
👀 👀 German secure comms seems to have been breached by Russia! Here is a link to the conversation German with Russian subtitles. t.me/margaritasimon…
Dec 8, 2023 • 5 tweets • 3 min read
Pearl Harbor radar plot!
Here is what the Opana Radar Station looks like today, still in use as a radar site! Back in 1941 a SCR-270 was located at this site. The SCR-270 operated at 106MHz which is quite low in frequency compared with modern radars. I have attached a coverage plot of the SCR-270 at this site.



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Image Here is a pic of the actual SCR-270 radar setup as it was in 1945. Image
Nov 28, 2023 • 4 tweets • 3 min read
👀 This is an important loss for Ukraine! 80K6M is a large S-Band 3D phased array radar produced in Ukraine. This is one of the most capable radars Ukraine operates and very few have been produced from what we can tell. Specs are in the technical brochure images 3 and 4. Source:




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Image Geolocation revels it was located very close to the location where a Ukrainian ST-68U was destroyed by suspected glide bomb recently! Eastern icon was the 80K6M and the Western was the location of the ST-68U
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Jun 11, 2023 • 6 tweets • 3 min read
C-Band 5.405GHz +- 100MHz emitter south of Luhansk near Andrivka Russian occupied Ukraine 48.354121, 39.451673 2023-06-10 03:31:35 to 03:32:00 UTC. The dual pol X-Pattern is back!! ImageImageImage Looks like something new at this site between 5-20-2023 and 6-7-2023 48.355439, 39.450532
Jun 11, 2023 • 5 tweets • 2 min read
Large hole in the radome at the Mayak Crimea radar site, cause unknown. 45.345597, 32.521076 Imagery source Skywatch 50cm date 5-7-2023. Image Satellite images aren't cheap! If you would like to see more please consider buying me a coffee! I feel so awkward asking but I would really like to take this to the next level. Thank you! buymeacoffee.com/radioandnukes
Jun 6, 2023 • 16 tweets • 4 min read
Nova Kakhovka dam was blown 46.77618, 33.37169
18.2 km^3 or 14,800,000 acre⋅ft of water was held back by this dam! Image Looks like two breaches. One large one in the flood gate area and a second one through the power house. Image
Jun 4, 2023 • 5 tweets • 2 min read
This makes allot more sense than an AD exercise!
May 10, 2023 • 5 tweets • 3 min read
This is a cool one! I don't know what we have here. It doesn't look like radar. Interference pattern with two pulsed point sources out of phase? Lots of radar pulses on the wider view. It only shows up vertically polarized. Lots of radar pulses in the data also. I'm processing the raw data into RF FFTs which will take a while. This is 5.405GHz +- 100MHz BTW. ImageImageImageImage
May 9, 2023 • 8 tweets • 3 min read
Snake malware details. Seems to have been a large operation spanning multiple alphabet agencies! #malware
media.defense.gov/2023/May/09/20… Image Some more details. bleepingcomputer.com/news/security/…
May 4, 2023 • 4 tweets • 1 min read
Seems odd to be flying a Bayraktar TB2 around Kyiv at low altitude as tense as things are right now? Unfortunately friendly fire incidents have occurred in pretty much every large conflict. I'm not 100% convinced about this incident.... Just feels off but the fog of war is really thick right now.
May 4, 2023 • 6 tweets • 4 min read
Why would Russia be interested in offshore wind farms? Here is my take based totally on informed speculation. Let’s talk about SCADA Supervisory Control And Data Acquisition. ImageImage SCADA is the control and sensor network for power grids. It can monitor things like Volts, Amps, Watts, RPM, Temp, Humidity, Alarms. It can control things like direction of the turbine, pitch of the blades, open / close circuit breakers, synchronization etc. ImageImageImage
May 4, 2023 • 7 tweets • 3 min read
Let's talk about Svalbard and why it's likely Russia was tampering with a undersea cable connecting the arctic island to the rest of the world. Svalbard has a large satellite ground station used mainly for polar orbiting satellites. ImageImage Ground stations near the poles are in view of polar orbiting satellites every orbit vs stations closer to the equator.
May 4, 2023 • 6 tweets • 2 min read
Russian Baltic fleet was just talking USB and this came in and just analiated them... Looks like wide band PSK just a guess without looking into it. ImageImage That's Container OTHR just above... It's so strong i can see reflections of moving objects Image
May 2, 2023 • 5 tweets • 2 min read
Different mode today at 17.050MHz Russian Container 29B6 radar 29Б6 Контейнер Playing back the waveform mixing with the live signal out of phase seems like a plausible way to break the container. Again this is all virtual I'm not even on the same side of the planet! Streaming IQ from Poland to the US analyzing all in software!!
May 1, 2023 • 4 tweets • 2 min read
Someone tried to sell this Uranium compound in Georgia, fortunately they were detained. The price of $2 million sets off alarms 🚨 in my head for that small amount. Going to see if I can dig up more. H/T to @Mattl8241 ssg.gov.ge/en/news/844/Th… ImageImageImage Could be that this is a sample and they have much more somewhere to else! Natural Uranium just isn’t that expensive for a small quantity. unitednuclear.com/index.php?main…
Mar 9, 2023 • 8 tweets • 3 min read
Sentinel-1 a/b use a C-Band Synthetic Aperture Radar centered around 5.405GHz Most likely source for this IMO would be the 96L6 NATO Cheeseboard radar. If anyone is looking at sat imagery in that area and spots anything let me know. ImageImage
Mar 9, 2023 • 6 tweets • 2 min read
Haven’t identified the system yet but it appears to have an interferometry or Doppler DF array. The green antenna may be separate. Looks like a cellular site also got destroyed. The location makes sense for a DF array. It’s high up next to a lake with the forward line of troops split by the lake.
Feb 16, 2023 • 26 tweets • 14 min read
🧵 Lets have a look at a few remote radar sites and see why it’s so hard to maintain these complex machines in some of the most inhospitable climate on 🌎! Let’s start with the FPS-117 above Tin City, Alaska Image First off where is Tin City, AK? It’s basically the western most point of continental North America. The radar site is ~30mi from Russian territory, ~56mi from the Russian mainland. ImageImageImage
Feb 16, 2023 • 7 tweets • 4 min read
This is no surprise if true! I have questions about the last position and timing. The last raw APRS packet shows it here at 11:23:06 UTC. ImageImageImage