Re:Turn a WiFi 7 Router into a 320Msps Software Defined Radi...
by ajsnigrutin on Tuesday October 13, 2026 @08:53AM
(#50070910)
Using an SDR is not "from scratch"
This is "from scratch": https://lea.hamradio.si/~s53mv/navsats/theory.html
:)
Re:Turn a WiFi 7 Router into a 320Msps Software Defined Radi...
by gspr on Tuesday October 13, 2026 @09:18AM
(#50071268)
You are of course absolutely correct! Let me rephrase: "from scratch" once the signal has been captured and I've avoided all the ways that hardware will fuck me over due to my lack of skills :-)
Very, very cool link!
Re:Turn a WiFi 7 Router into a 320Msps Software Defined Radi...
by jacquesm on Tuesday October 13, 2026 @02:24PM
(#50076270)
If go down that route: get yourself a Rubidium standard, they're $150 on ebay and it will give you a rock solid clock to start off from.
Re:Turn a WiFi 7 Router into a 320Msps Software Defined Radi...
by minetest2048 on Tuesday October 13, 2026 @11:35PM
(#50082075)
RTL-SDR can do GPS L1CA signal processing easily, but you need to use the RTL-SDR Blog dongles not the blue no-name DVB-T dongles as:
- You need stable clock for the processing algorithms to be happy, RTL-SDR blog dongle have 0.5ppm TCXO while who knows what crystal they use on the no-name ones
- RTL-SDR blog dongles have bias-T, and a lot of GPS patch antennas are active antenna that need power from the coax to power the LNA
Last time I was down this rabbit hole (when cheap RTL-SDRs were completely new), my favorite fun test was ADS-B, so let's say I wanna play around 1-1.1 GHz at first.
One day I also wanna sit down and do GPS from scratch, "by hand", so let's say I also wanna do 1.57 GHz (which I understand is becoming borderline difficult for the cheapest devices?).
Even though these devices are cheap, I'd rather avoid needlessly extra-shitty devices or my money going to copycat leeches.
Any recommendations in light of these requirements? Thanks a lot!
> HackRF is not as good at listening -- a bit deaf -- but does provide much larger bandwidth and obviously the low powered half duplex tx ability.
Yeah I know it's in a completely separate category, I just derail and start daydreaming ;-)
> Beware, you'll end up acquiring many different radio devices and then likely start building antennas out of scrap, buying a nanovna, and falling deeper and deeper into the magical rabbit hole!
Lol! I can see that danger very clearly!