Re: [Discuss-gnuradio] Simple band pass filter

[umer.rabbani]

Hello Nick,
Thanks for your reply, I want to know about the parameters for my bandpass 
filter block?

So what parameters should give  to my band_pass_filter as follows
high_cut_off=?
low_cut_off=?
sampling_rate should be less than 6.25MHz
transition band=?

Yes I want to use usrp2 source how do I update that ?

Umer


________________________________________
From: Nick Foster address@hidden
Sent: Monday, July 02, 2012 2:42 PM
To: Rabbani,U,Umer,DUB8 R
Cc: address@hidden
Subject: Re: [Discuss-gnuradio] Simple band pass filter

Umer,

You have a filter with a sample rate of 1.7GHz. This is obviously incorrect. 
Your filter must operate at the baseband rate; in the case of USRP2 with 
decimation 16, as you have it set up, the filter will operate at 
100Msps/16=6.25Msps. The filter cutoff frequencies must be similarly relative 
to the baseband frequency, not absolute -- if you are tuned to 850MHz and want 
a cutoff at 850.4MHz, you would specify a cutoff frequency of 400kHz.

Additionally, did you really mean to use the USRP2 source? The old USRP2 source 
has been deprecated in favor of UHD for a very long time.

--n

On Mon, Jul 2, 2012 at 6:19 AM, <address@hidden<mailto:address@hidden>> wrote:
I have attached my GRC file with this email. I am getting the following error?

gr_buffer::allocate_buffer: failed to allocate buffer of size 43852 KB


Umer
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