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| From: | Matt Ettus |
| Subject: | Re: [Discuss-gnuradio] Impulse response USRP DAC<->ADC |
| Date: | Wed, 26 Mar 2008 23:49:57 -0700 |
| User-agent: | Thunderbird 2.0.0.12 (X11/20080226) |
Per Zetterberg wrote:
When I changed the base-band frequency of the digital up/down-conversion from zero to 4MHz the hole disappeared.
There is no 4 MHz hole. You are seeing rolloff from the CIC filter on the TX.
Matt
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