[Hackrf-dev] Two Dead Hacks

[James Brown]

That's a distinct possibility (and a costly one).

-----Original Message----- 
From: Michael Ossmann
Sent: Tuesday, September 4, 2018 12:16
To: James Brown
Cc: Chuck McManis ; Hackrf-dev
Subject: Re: [Hackrf-dev] Two Dead Hacks

Maybe you had a ground loop problem?


On Tue, Sep 04, 2018 at 12:06:47PM -0700, James Brown wrote:
>
> It was one of those “something’s not working on my Hack. I’ll try my 
> second one” things.
>
> I admit I was doing weirdness on the poor boards. I was trying out running 
> USB over CAT 5 and had a USB transmitter and receiver setup with about 150 
> feet of CAT 5 between. The receiver, the unit near to the remote Hack was 
> powered from a 5 V linear regulator (LM117 with pot and caps etc). Had the 
> thing working pretty well with a bandwidth of 4 Mhz when disaster 
> occurred.
>
> I found that the CAT 5 receiver was also blown so I did something way 
> wrong.
>
> Some fun.
>
> From: Chuck McManis
> Sent: Tuesday, September 4, 2018 10:55
> To: Jim at seti.net
> Cc: Hackrf-dev
> Subject: Re: [Hackrf-dev] Two Dead Hacks
>
> Just out of curiosity (and a desire not to step into something) do you 
> know how you killed the HackRFs? I've seen people who killed the input or 
> output RF amps because they weren't thinking about RF stages, and I've 
> seen a couple of reports of people killing them by using poorly regulated 
> battery based power supplies.
>
>
>
> On Mon, Sep 3, 2018 at 12:20 AM James Brown <Jim at seti.net> wrote:
>
>   I managed to kill both my Hacks. Neither one will enumerate on the USB. 
> Tried several machines. No Luck.
>   Is there a service for repair of these machines?
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