Re: [Discuss-gnuradio] Feeding 12VDC through COAX using DBSRX

[Patrik Tast]

Hi Matt,

Many thanks for your clarification.

Thanks,
Patrik

----- Original Message ----- 
From: "Matt Ettus" <address@hidden>
To: "Patrik Tast" <address@hidden>
Cc: <address@hidden>
Sent: Friday, October 23, 2009 8:56
Subject: Re: [Discuss-gnuradio] Feeding 12VDC through COAX using DBSRX


> Patrik Tast wrote:
> > Hi All,
> >  At the moment I feed 12 VDC into COAX outside Ettus USRP1 12VDC to power 
> > my LNA. I have a DC-Block
> > at the receiver to prevent voltage back into the DBSRX-LF REV 2.2.
> >  Connector J100 say Antenna Bias + and GND 500mA @ 6V.
> >  My question is, is it possible to feed 12V to the J100 without damaging 
> > the unit(s)?
>
>
> You can feed 12V into pin 1 of J100, with pin 2 as ground.  Don't connect 
> anything to J101.  Don't draw more than 200 or 300 mA.
>
> Matt