If you look at the input and output on the schematic, it is clear that U25 is TX and U13 is RX. https://github.com/mossmann/hackrf/blob/master/doc/hardware/hackrf-one-schematic.pdf
And if you look at a photo of the board, U25 would be a 6 pinned chip, approximately half way between the SMA and the RFFC5072 chip on the board. https://github.com/fd0/hackrf-one-pictures/blob/master/img_0009.jpg This will probably be clearer if you zoom in on the assembly sheet for the HackRF One: https://github.com/mossmann/hackrf/blob/master/doc/hardware/hackrf-one-assembly.pdf On 11/09/2015 13:43, Primesh Pinto wrote: > Hi All, > > I recently plugged in an home made RF Amplifier based on M57732 /discone > antenna. > > https://twitter.com/primeshpinto/status/637957899944202240 > > It was very successful as I was able to even contact the local repeater > though this. But unfortunately later I figured out most likely the RF > amplifier on the HackRF failed within this process. Now when I enable RF > gain to 14dB the output signal become very weak. Anything which can impact > MGA81563 to fail when I connect an external amp for transmission? Also I > want to know if I have to replace U25 or U13 MGA81563? > > Primesh > > > > _______________________________________________ > HackRF-dev mailing list > [email protected] > https://pairlist9.pair.net/mailman/listinfo/hackrf-dev
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