[Hackrf-dev] Hackrf with an External Amplifier

[Paul Connolly]

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
> HackRF-dev at greatscottgadgets.com
> https://pairlist9.pair.net/mailman/listinfo/hackrf-dev

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://pairlist9.pair.net/pipermail/hackrf-dev/attachments/20150912/d7dcda0c/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 834 bytes
Desc: OpenPGP digital signature
URL: <https://pairlist9.pair.net/pipermail/hackrf-dev/attachments/20150912/d7dcda0c/attachment.pgp>