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From: | Ralph A. Schmid, dk5ras |
Subject: | Re: [Discuss-gnuradio] rrc_filter in generic_mod_demod |
Date: | Wed, 12 Jun 2013 11:03:32 +0200 |
zo Sent a my mobile...Dqe ----- Reply message ----- From: "Ian Buckley" <address@hidden> To: "Dan CaJacob" <address@hidden> Cc: "address@hidden" <address@hidden> Subject: [Discuss-gnuradio] rrc_filter in generic_mod_demod Date: Wed, Jun 12, 2013 07:52 Dan, Any chance you can attach those pictures in a different way and resend, I couldn't find a way to view them and I'm curious to see them. -Ian On Jun 11, 2013, at 10:12 PM, Dan CaJacob <address@hidden> wrote: There are two parameters that will affect your TX power: digital amplitude and RF gain. The digital amplitude sets the amplitude of your signal going into the DAC. UHD expects a signal between 0 and 1.0, but to keep your output nice and linear, keep your signal amplitude belw 0.2. Conversely, 0.02 seems pretty low. RF gain is applied in the aughtercard once your signal has been up converted. My practice is to keep the signal amplitude at 0.2 max amplitude, then adjust RF gain to control power. You'll end up getting less than the max rated power output (e.g. 20 dBm for WBX, but you'll have a clean RF signal. |
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