I have a hackrf one sdr, which i use to transmit test signals. I am using ISM bands, so I can omit transmitting my callsign, checking correct sub band (FM, digital) etc. And one of most interesting bands is 2.4 GHz, the wifi band.

The problem is that i have only one SDR device capable of operation in that band - the hackrf itself.

But recently I have discovered a MAX2121(b) IC which I saw in a sat top box circuit diagram. And this chip is what I think I need - it downconverts frequencies from 800-2100 mhz to IQ signal.

The problem is that this chip's upper band limit is 2100 MHz, which is below 2400 MHz.

I tried to google "S band tuner ic" and found one which band starts from 2600 - still outside desired band.

So, the question is: is there any 2.4 ghz tuner ICs for SDR receivers?

  • $\begingroup$ Hint: the hackrf is open hardware; you can find extensive documentation on Great Scott Gadget's repos. It contains a tuner IC. $\endgroup$ – Marcus Müller Nov 28 '19 at 15:18
  • $\begingroup$ Does this help? rtl-sdr.com/… $\endgroup$ – W4QA Nov 28 '19 at 17:05
  • $\begingroup$ You could try to reuse old MMDS converters. They operated in 2.1-2.3GHz or 2.5GHz, which is still not quite the desired frequency, but already closer. $\endgroup$ – Radovan Garabík Nov 30 '19 at 18:22

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