[Hackrf-dev] Did i kill RF frontend amplifier ?

[Paul Connolly]

Most LNB's would have a gain of about 60 dB, So I would guess that
+23dBm to +26dBm was the signal level going into the HackRF One with a
maximum safe input across the entire spectrum of -5dBm (LNA on) [
https://github.com/mossmann/hackrf/wiki/HackRF-One#receive-power ]. Best
to leave the LNA off at all times, unless you have checked the entire
spectrum is not going to damage it. Someone already damaged theirs
HackRF One by using a 5W handheld held an inch from it.

Most likely, U13 needs to be replaced.  It's an MGA-81563-TR1G.


On 03/12/2014 20:39, Rémi Laisné wrote:
> Hello,
>
> First, I'm not here for complaining.
>
> I plugged hackrf to lnb output of sat receiver and it seems hackrf
> frontend didn't like it.. (not 18v output though..)
> When i switch RF gain from 0 to 14 dB signals are shown weaker than
> without.
> Before to repair it, do you know if another sensitive component could
> have blown up because of that ?
>
> thanks.
>
>
> _______________________________________________
> HackRF-dev mailing list
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev

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