Active antennas on Ettus RFX d'boards

GNU Radio
1

Hi all,

Although there are methods for supplying +5V to a receive antenna on the
DBSRX daughterboards, I just wanted a final sanity check to verify that
there is not something similar for the RFX (in particular 1800)
daughterboards before I go and buy an external bias tee.

I’ve looked in the archives, at the schematics, and at the board itself,
but
I’m not a hardware expert so I could easily miss it.

Thanks immensely,
Steve

2

On Tue, Jan 26, 2010 at 01:49, Steve P. [email protected]
wrote:

Although there are methods for supplying +5V to a receive antenna on the
DBSRX daughterboards, I just wanted a final sanity check to verify that
there is not something similar for the RFX (in particular 1800)
daughterboards before I go and buy an external bias tee.

You are correct, there is no provision on any of the RFX boards for
supplying power over the coax, and you will need an external bias tee.

Johnathan

3

On 01/26/2010 01:49 AM, Steve P. wrote:

Hi all,

Although there are methods for supplying +5V to a receive antenna on the
DBSRX daughterboards, I just wanted a final sanity check to verify that
there is not something similar for the RFX (in particular 1800)
daughterboards before I go and buy an external bias tee.

I’ve looked in the archives, at the schematics, and at the board itself,
but I’m not a hardware expert so I could easily miss it.

Only the DBSRX has an internal bias tee. None of the other
daughterboards do.

Matt