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Things you can do with a Software Defined Radio (2024)

(blinry.org)
940 points mihau | 8 comments | 16 Sep 25 14:35 UTC | HN request time: 0.001s | source | bottom
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amelius ◴[16 Sep 25 15:25 UTC] No.45263574[source]▶
Is there SDR for the GHz range of signals used by modern equipment?
replies(4): >>45263614 #>>45263616 #>>45265098 #>>45266651 #
1. megaloblasto ◴[16 Sep 25 15:29 UTC] No.45263616[source]▶
HackRF One can go up to 6GHz ($400 new or $100 on alibaba for a similar device). Any higher frequency than that you'll be paying thousands.
replies(4): >>45263626 #>>45263637 #>>45263969 #>>45270152 #
2. ◴[16 Sep 25 15:30 UTC] No.45263626[source]▶
3. rlmineing_dead ◴[16 Sep 25 15:31 UTC] No.45263637[source]▶
Yeah I dont know any SDR above 6GHZ but also other than mmwave 5G I also dont know much radio that is above 6Ghz in general
replies(2): >>45264662 #>>45266685 #
4. amelius ◴[16 Sep 25 15:55 UTC] No.45263969[source]▶
Looks cool, except it uses USB2 which seems limiting in view of bandwidth.
replies(1): >>45270322 #
5. structural ◴[16 Sep 25 16:46 UTC] No.45264662[source]▶
Quite a few radar systems are in the 8-10GHz range and satellite communications just above that. The general idea when using a SDR for these things is to have a separate frequency converter & amplifier at the antenna feed itself, then have an intermediate frequency <6GHz fed via cable to the SDR. Tends to be much easier and cheaper this way.
6. esseph ◴[16 Sep 25 19:21 UTC] No.45266685[source]▶
Here you go, from the US perspective:

https://www.ntia.gov/files/ntia/publications/2003-allochrt.p...

7. boneitis ◴[17 Sep 25 00:40 UTC] No.45270152[source]▶
for anyone reading this actually interested, just FYI an improved model "HackRF Pro" is due for release in the next month or so, is backwards-compatible, and is what will come in at that $400 price tag.

years ago, there used to be a very abundant market for used or chinese clone HackRF One units, but i haven't been able to find any these days.

8. ux266478 ◴[17 Sep 25 01:05 UTC] No.45270322[source]▶
480 Mbps is plenty for low GHz signals. 1GHz gives you 20MHz to play with, which turns into about ~100 Mbps max. A 6GHz signal pulling out all the stops will give you at ~1.6Gbps, but if you're dealing with data that extreme you're barking up the wrong tree with a cheap SDR like the HackRF.