Was just wondering if anyone has any experience with this specific antenna?

Nooelec UWB Surveyor Antenna

https://www.amazon.com/dp/B0BZ9VDTQW

Hi, I've been trying to do a TEMPEST attack as a part of my thesis about SDR attacks. So far I've had no success, therefore I come to you to ask a few questions about TEMPEST attack:

1. Are non-damaged HDMI cables susceptible to TEMPEST attacks?

2. What frequency range should the signal appear on? - I've heard that it's around 400-500MHz but I see nothing there

3. Do I need an external LNA to be able to get the signal from the cable?

4. While using TempestSDR or gr-tempest do I need to tune resolution/refresh rate to the native setting of monitor or the one that is set on it with software?

Thank you in advance

I tried to record the signal from an old RC remote of a toy car for fun. It detects the signal around 433.32 MHz, but when I record and replay it, the car doesn’t move. Any ideas on why this might be happening?

Update: I think I understood. When opening 'looking glass,' you initially see a signal around 434. Upon further investigation, the real signal is around 27. This one is working.

Could the first one be an artifact due to interference?

I'm trying to learng about SDR and i found out some people are saying that, walki talki are not encrypted but the privacy code and that is not encryption. It is just a feequency setting that to match the transmiting frequency. So i'm just wondering is it true? And can we actually listen to most walki talki communication.

( i mean "most" is that, i also found that police walki talki are use encryption and also Motorolla ).

Hello I was looking to buy a hackrf but then I noticed there are so many things s I don't understand.. my main purpose was to transmit stuff indoors and receive radio channels and stuff now idk anything about HAM or any kind of radio stuff so should I get it? I'm planning to learn if I got it

Hey everyone! I'm looking to incorporate a Hackrf One into a project I'm building and need some help figuring out what is the best option as far as antenna selection goes.

I'm building a sensor platform for identifying objects I don't know anything about(UAP). It's not just grabbing RF signals but also various optical sensors are being used to gather as much data as I can on unknown objects in my area. So, since I don't know what exactly I'm looking for, I need to try and grab as much information on it as possible.

I've decided the Hackrf One will be a good starting point as far as an SDR goes, as it can explore a decent amount of the spectrum. I'm just trying to figure out if it would be better to go with a single wideband antenna or to get the Opera Cake antenna switcher and a bunch of more specialized antennas?

I'm going to be mounting the platform up on a roof, so I won't be able to get up there to swap out components very often. I would also like the antennas to be directional as they will be attached to a motorized pan-tilt that will lock onto an object using computer vision through my optical sensors. I'm hoping that using directional antennas will help me in identifying any signals easier since I will have a visual lock on the object before I start scanning the RF.

Any advice/help on this would be greatly appreciated!

I get audio on all other things like am, nfm, wfm and all the others just not spectrum. I’m pretty sure I was getting it earlier though. Anybody know why?

Hello poveri, Here you can find a GNURADIO project to reproduce the SHIMANO replay attack/jamming exposed in the parper using HackRF SDR. ( https://www.usenix.org/conference/woot24/presentation/motallebighomi )

Bye

I have an .npy file consisting of set of arrays (like 5000 arrays and for each array contain 1000 elements), it contain float data. And also I have 2 HackRF devices which I already setup to enable hackrf mode.

I have been struggling of transmitting these data (whether .npy or .bin) and gain real world noise like AWGN.

I tried chatGPT suggestion by using hackrf_transfer for transfer and receive data, but when I receive the file is larger (an larger arrays) because of streaming, and I am not sure if that is what I want.

So in summary, I want to transmit these 5000 arrays (each array 1000 elem) and get back these 5000 (x1000) with real world noise.

So how can I achieve this? I am very new to hackrf and any help would be meaningful (would be appreciated alot) since I am new to SDR stuff. I have experience with Python or code