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Re: [Discuss-gnuradio] USRP1 gain

From: Nemanja Savic
Subject: Re: [Discuss-gnuradio] USRP1 gain
Date: Wed, 9 Oct 2013 17:03:58 +0200

You are right Marcus, but it is negative gain, and I wonder why USRP source allows me to specify more than 20 db of gain for wbx, without any warning. In fact what happens when u specify some gain value, how is configuration of the path set?


On Wed, Oct 9, 2013 at 4:55 PM, Marcus D. Leech <address@hidden> wrote:
On 10/09/2013 10:51 AM, Nemanja Savic wrote:

as far as I can see the only thing on wbx board that has adjustable feature in rx path is attenuator, everything else has fixed gain. Am I missing something here?

Best and thanks,

The way variable gain is nearly-universally implemented in RF systems is with an attenuator in the RF path.  So, that 31.5dB variable attenuator
  *is* the variable gain.

Marcus Leech

Principal Investigator
Shirleys Bay Radio Astronomy Consortium

Nemanja Savić

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