Turn a WiFi 7 Router into a 320Msps Software Defined Radio Receiver

aftbit

Wow that's super cool! It's not DC to daylight but I sure don't know a cheaper way to get a 320 Msps receiver at 5 GHz.

asdff

Thanks claude

jeffbee

An accurate description is "turn an SDR into an SDR".

mikewarot

Having done repairs on a ton of older service monitors, and having my hand in SDR, this is amazing! There's a huge amount of machining and hardware to make a service monitor, but with desktop CNC, cheap PCBS, and jelly bean components that go into the 10s of GHz, the sky's the limit. I'd add a heat sunk 100 watt DC-5Ghz 20dB fixed attenuator, 0-110 dB switched attenuator, 5 ghz low pass filter, 7-12 Ghz local oscillator/mixer up/down converter, and it would make a small, very high performance service monitor good to 5 Ghz. 8)

acd

What is the radio quality like SNR?

thebeardisred

FYI, since it's the same chipset I'm pretty certain this will work on the Banana Pi R4, which has built in PCIe for NVMe.

yonatan8070

This same devloper also built an SDR out of an ESP32 Wi-Fi microcontroller [1], this is awesome! This development makes me hope that we'd be seeing more of these on common Wi-Fi cards, so that every random laptop could be used as an SDR for many fun and useful applications on a budget. https://github.com/h0m3us3r/eSpDR

jedbrooke

wow, could this be turned into a 2.4ghz SAR? I always wondered if it’d be possible to use something like that to pick up wifi signals from much farther away. Of course a more sensible choice would just be to use a yagi antenna

flemhans

Anyone know how to get ahold of a device in Europe?

radio879

I can't keep up with the rapid, non stop cool stuff being discovered! Someone figured out how to get the ESP32 to transmit, at lower bandwidth (I think I read 200-250khz) I don't know which project it was but there are a bunch on this site: https://www.rtl-sdr.com/esp32-sdr-turbo-mode-throughput-impr...

yieldcrv

Am I understanding that this is doing something the chipset wasn’t designed to do? I’m not seeing a synopsis of the significance of this, for the uninitiated What is Msps? I’m not familiar with that scale

crest

Now if you could also make it transmit such samples a few of those could make a nice DIY phase array for some of the most fun bands to play with.

sigbottle

What do normal people use SDRs for? I'm genuinely curious. Or is it just cool to do?

zdw

$80 here? https://www.amazon.com/dp/B0DR7KMNC4 That's quite a good deal...

jauntywundrkind

Super awesome. Not the point but the Airhona could here is really neat. AN7581 with typical quad Cortex-A53 but then 8x RISC-V network coprocessors. Good luck figuring out how to use that though, whew! (Go Astra go.) https://www.airoha.com/products/p/NpfqGLnZiZuYUZ6N I've been thinking how beautiful and awesome it is that SDR finally has a real jump. The QuadRF using the rpi's mipi connector was such a glorious hack! Custom ADC from parts. 80MSps. https://www.crowdsupply.com/scale-rf/quadrf And man what a huge flying leap forward here. 320MSps! Much deeper 14b IQ precision vs 8b. The totally custom mediatek radio firmware is incredible . Such incredible possibility. Maybe someday the mimo can be useful for some of the same neat AoE / beam forming capabilities?

alightsoul

Is this kind of thing why samsung asks you to sign a contract before letting third parties use the FM radios on their phones? Because many phone radios nowadays are software defined?

ram_rattle

Dope,guys at espargos did the same thing in esp32, there is another 5ghz variant with same LAN port that can give broader sweep and more resolution. https://espargos.net/espsdr/

UI-EDITOR

what is software defined radio receiver?

nunzioraciti

Very interesting, thanks for sharing.

burgerone

Can we stop normalising that interesting stuff nowadays is always slop?