|
From: | Anton Komarov |
Subject: | Re: [Discuss-gnuradio] Xlate FIR filter broken in gr 3.7 |
Date: | Wed, 7 Aug 2013 16:26:48 +0400 |
On Wed, Aug 7, 2013 at 7:56 AM, Anton Komarov <address@hidden> wrote:Try reversing the sign of the center frequency value for the xlating
> Ok, i've attached very simple grc chart
> with slider you can change the frequency, two waterfalls shows spectrums
> before and after xlating.
> So i had test it in apco25 env and took apco signals as a reference. So when
> i saw signal e.g. at 451.378 MHz and tuned to it i saw no signal after
> xlating nevertheless it was the same time on waterfall before xlating.
>
> You can test this chart with you radio environment.
>
> Then i testing the same logic with gr 3.6 (code is not compatible i have to
> redraw it..) and here it is! xlating worked like a charm.
filter. I've been using this block for some tests of my own this week
and it's working as expected.
Tom
--
> On Wed, Aug 7, 2013 at 1:48 PM, Martin Braun (CEL) <address@hidden>
> wrote:
>>
>> On Wed, Aug 07, 2013 at 01:00:32PM +0400, Anton Komarov wrote:
>> > Hi, made an attempt to test my python scripts with new 3.7.0 of GR
>> >
>> > and what i am seeing xlate fir filter is broken
>> >
>> >
>> > previously xlate worked perfect with 3.6 version
>> >
>> >
>> > tested with waterfalls and i see wrong xlating
>> >
>> > i think developers should pay attention to this issue
>>
>> Hi Anton,
>>
>> can you please elaborate on this bug. Ideally, could you post an issue
>> on our tracker: http://gnuradio.org/redmine/projects/gnuradio/issues
>>
>> Specify what you configured, what the expected outcome was and what
>> happened instead.
>>
>> Thanks,
>> MB
>>
>> --
>> Karlsruhe Institute of Technology (KIT)
>> Communications Engineering Lab (CEL)
>>
>> Dipl.-Ing. Martin Braun
>> Research Associate
>>
>> Kaiserstraße 12
>> Building 05.01
>> 76131 Karlsruhe
>>
>> Phone: +49 721 608-43790
>> Fax: +49 721 608-46071
>> www.cel.kit.edu
>>
>> KIT -- University of the State of Baden-Württemberg and
>> National Laboratory of the Helmholtz Association
>>
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>
>
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Tom
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