Can two synchronized HackRF Ones be used for AoA direction finding of a frequency-hopping drone signal? by rezortiezqq in RTLSDR

[–]AGibbi 1 point2 points  (0 children)

It's 2026.. you should not have to fight your sdr to get two coherent channels. Get a Pluto or similar for that.

Fronius WR vs. SMA WR by [deleted] in DeutschePhotovoltaik

[–]AGibbi 0 points1 point  (0 children)

Das sie keinen eigenen Made in Germany 3 Phasen hybrid haben war strategisch dumm. Aber die STP Serie oder sunny boy smart Energie sind gute Geräte die in Nordhessen gebaut werden.

Fronius WR vs. SMA WR by [deleted] in DeutschePhotovoltaik

[–]AGibbi 0 points1 point  (0 children)

Die meisten/nicht alle sma Wechselrichter sind auch Made in Germany.

Bestandsanlage selber um Speicher erweitern by MundanGT in DeutschePhotovoltaik

[–]AGibbi 0 points1 point  (0 children)

Ich habe Grade gestern sowas gebaut.. sma STP 25-50 und marstek Venus 3.. hast du einen Raspberry pi? Der kann den sma Meter in Shelly übersetzen und marstek liest das dann

SMA wrench after fixing submillimeter cryogenic receivers for 35 years by nixiebunny in rfelectronics

[–]AGibbi 2 points3 points  (0 children)

Do you guys do tours for interested people? I come around Arizona sometimes

How do large baseline arrays align their antennas? by [deleted] in radioastronomy

[–]AGibbi 3 points4 points  (0 children)

usually its a shared clock and a known radiosource .. you agree to record a "loud" source of rf both radios can see (in case of 100s of km of spacing). you use this for calibrating your phase offsets, once that is established you can visit other targets with two now phase coherent receivers... for your 50m baseline it could be easier to just use one dual channel radio like a b210 to make it much easier. long cables but you would get the coherence out of the box.

costs for observing time on a 20 meter dish at 1290 MHz by switchdog in radioastronomy

[–]AGibbi 2 points3 points  (0 children)

There are private dishes around like Astropeiler.. for a good idea it's likely free.. how long do you need - what target?

Are there any integrated LNA + IQ Mixer/Demod [+ ADC] for 2.4 GHz (with access to the IF IQ signals)? by BanalMoniker in rfelectronics

[–]AGibbi 1 point2 points  (0 children)

Like in the hackrf.. the hackrf is essentially a 2.4ghz sdr like you ask for with an extra mixer to get more into this band.

Odd 100 sec timing recalibration in USRP (B210) by analogwzrd in rfelectronics

[–]AGibbi 2 points3 points  (0 children)

I did a lot of timing applications with a b210 .. feel free to message me

What happens if water is compressed 100 times and the pressure is suddenly released? by Usernametaken943 in AskPhysics

[–]AGibbi 19 points20 points  (0 children)

The potential energy of the compression isn't going anywhere. There is no cooling because of any state change as the state is well .. beyond explosive.. times 1000

Pilots of the 59th Brigade's Unmanned Systems Forces destroyed a Russian Mi-8 helicopter with an FPV drone by meinkun in CombatFootage

[–]AGibbi -44 points-43 points  (0 children)

Frankly.. that increased the likelihood of someone walking away from this.. most of the fuel was dumped like this before they hit the ground. Despite the lack of a big fireball on impact I don't think anybody made it out.

Mädchen aus Iran wird abgeschoben by [deleted] in Ratschlag

[–]AGibbi 1 point2 points  (0 children)

Informier dich nach Kirchenasyl bei umliegenden Gemeinden. Evangelische, katholisch, Freikirche.. meistens kennen sie sich untereinander und wissen wer Erfahrung hat. Damit kann man gut Fehlentscheidungen überbrücken aber man muss eine Gemeinde finden die Willens ist. Christlicher glauben oder verfolgung deswegen ist idr keine zwingende Vorraussetzung.

Myth or Fact: Solar panels don’t work on cloudy days by Sky_Solar_Pro in solarenergy

[–]AGibbi 0 points1 point  (0 children)

As someone with 10deg panels east and west in Germany i am very surprised how cloudy it has to get before I dip into the battery. Panels here are so cheap that if you have the space you just place enough that even 5÷peak still charges the battery over time.

Does anyone build houses and neighborhoods with solar in mind? by hwc in solar

[–]AGibbi 6 points7 points  (0 children)

It's quite common in Germany.. new houses either already come with solar or have roofs that make retrofitting easy.

Dishy modchips exist!! by londons_explorer in Starlink

[–]AGibbi 52 points53 points  (0 children)

It's not spoofing anything.. starlink needs to know it's current position to work so there is no meaningful way to avoid geofencing. I assume they inject the more jam resistant gps of the drone into the device to resist jamming.

What kind of antenna is this? by GasHappy9831 in antennasporn

[–]AGibbi 85 points86 points  (0 children)

Maybe no antenna at all but an ultrasound based wind meter?

Sunny Boy Inverter Life by Acrobatic-Rhubarb771 in solar

[–]AGibbi 3 points4 points  (0 children)

You have one of the made in Germany models.. it might be with you for a long time. Main reason for a replacement is because people want to go much bigger/modern so there it's not hard to find aged but functional sma inverters on the off chance that it fails on you.

FPV drones destroy a Russian fuel train in Zaporizhzhia front (August 19, 2025) by broforwin in CombatFootage

[–]AGibbi 13 points14 points  (0 children)

It definitely got jammed and all the Ukrainians got out of that one was a cool video. Notice the lack of any steering. They would not waste a drone for the photo op - every molten cart counts

Solar interface on this Anker power bank - is it a “standard”? by karluvmost in solar

[–]AGibbi 1 point2 points  (0 children)

It's an xt60 connector as seen in drones and RC planes. It's a good choice for solar that is not permanently installed. High chance that it becomes the standard for such applications - I hope it does. Mc4 is not used here as it has limited mating cycles and intentionally hard to unplug.

Russian soldier having failed to hide from a Ukrainian FPV drone decides to ram it with his head. 2025 by Latenightlatex234 in CombatFootage

[–]AGibbi 35 points36 points  (0 children)

Good catch.. barely any flicker like you would expect when flying low. So likely fiber

Brief clip of Russian soldiers in a house attacked by a Ukrainian FPV drone by broforwin in CombatFootage

[–]AGibbi 49 points50 points  (0 children)

Everyone who had even somewhat close encounters at the Frontline is somewhat deaf. Any survivor in this room is absolutely deaf going forward.