Derek

@scott23192 Can we assume the TLE’s are accurate?

S-Band RX capable?? If you run out of things to do, you can always look for this ESA spacecraft!

@kc9on @uhf_satcom youtu.be/koxF8CssPVM?si…

Anyone have a non-blurry schematic for a Mirage B-2518-G amplifier? Everything I found so far you can't read the values and this amp doesn't look right!

@kc9on @uhf_satcom I hope this helps manuals.repeater-builder.com/Mirage/B-2518-…

@DF3LZ So many great projects you have to finish/begin.

Retirement is very close!

@waratahseed really clean signals for the satellite. Great work.

@waratahseed Great strong signal.

Hi @sdrlabs is there any way to add a Kiwisdr in a private network rather than the internet registered devices.

@OGridPete I would like a blocker which detects attempted intrusion and alerts me.

I might just be overly paranoid, but I always use a USB data blocker on public chargers. I never see anyone else using these so I guess it’s just me. 🤷🏻‍♂️

@mickeywzx @coastal8049 Good connection coverage.

Low earth orbit satellite traffic in the night sky.

@sdrlabs Hi, I really like the product, but I have some private KiwiSDR’s and would like to know how I can configure the IOS application to connect to them, rather than the public systems?

@HI8ESF @cqcqcqdx Might be RX only DF antenna or something like 5 watts on the top and RX on the bottom. Slight variations in RX DF on the top compared to the bottom 4 antennas, may provide elevation and speed information. Might try this with my own direction finding kit.

@cqcqcqdx What's the PEP on those antennas so close to the Marine's head?

Operating a tablet to a VMAX backpack system during a field exercise at Marine Corps Base Camp Pendleton. The VMAX is a system used by RADBN to survey the field from an electromagnetic perspective, and offers electronic attack capabilities such as signal interception and jamming!

@coastal8049 I agree, there is a lot more that can be done. As you know it’s often difficult to bring a community along towards common goals and at a high consistent quality.

Beyond Enthusiasm: Rethinking Amateur Contributions to Space Situational Awareness skyriddles.wordpress.com/2025/05/11/bey…

@troyhunt it’s a Coke flavoured laxative.

WTF will I get if I order this?!

@konradgajdus nice coloured icing.

I made a donut using the C standard library

@Marco_Langbroek I wondering if it has changed its activity or RX/TX profile (freq/encryption/traffic padding)?

1/2 New blogpost: "The Russian eavesdropping satellite LUCH (OLYMP-K) 2 has moved significantly" (link in next tweet)

@coastal8049 I may be able to assist. I’m in the southern hemisphere. Do you need to track and at what orbit/power?

I need to get in contact with someone in control of a large 137MHz antenna or array. Anyone got a contact?

@gunsnrosesgirl3 Very “red dwarf”.

How ships are painted x.com/DamnThatsInter…

@olegkutkov One of these.

@olegkutkov Great project. I remember when you were working with your HackRF’s. I’m thinking the same code could be used with a Vivaldi array and use the full spectrum of the HackRF. I wonder if the combined Bluetooth signal strength can be correlated for the same mobile target. Be safe.

This is an amazing engineering project. Much respect for the author! It inspires me to resurrect my hackrf supercluster project. Back in the day, I experienced the same issue with a mismatch of phases and amplitudes between HackRF boards. I came up with the idea to inject a reference signal to adjust signals. Unfortunately, the war started, and I was kinda distracted and was (and still) pretty busy with other things. This is certainly no excuse, and I keep promising myself to come back to this project. It was pretty fun. youtube.com/watch?v=sXwDrc…

@MehdiHacks That looks awesome.

@Dwek__ lotussys.com/products/budc2…

Want to extend your SDR or spectrum analyzer’s range? Most cap at 6GHz, but a down-converter shifts higher frequencies into measurable ranges. I use one from Lotus Communication Systems (made in USA) to analyze signals up to 14GHz! Example photo attached: A 12GHz signal converted to 3GHz. It’s software-defined, so I can adjust the LO frequency. (e.g., 8GHz input + 2GHz LO = 6GHz & 10GHz outputs. Mixers produce both sum and difference of the 2 signals, so it's also an up-converter) Note: These mixers degrade phase noise & amplitude of the input signal.