RTLSDR_Set_tuner_Bandwith error

Luigi Tarenga luigi.tarenga at gmail.com
Mon Feb 13 08:27:12 UTC 2017


Hi Martin,
the official rtl-sdr driver has been forked many times on github.
Still I can say that the tuned bandwith is tunable with the official driver.
The exported API is:
RTLSDR_API int rtlsdr_set_tuner_bandwidth(rtlsdr_dev_t *dev, uint32_t bw);

see the git:
http://git.osmocom.org/rtl-sdr
the function has been added on 2015-05-15

I can make a guess, does you python program rely on another software layer
like gr-osmosdr? (gnuradio osmosdr)

because I had the same problem where I wanted to tune the bandwidth with
gqrx but the function was not implemented in gr-osmosdr, only in the
underlying
rtl-sdr driver.

If this is the case I already prepared a simple patch for myself and I will
the
more than happy to share it with you and the list.

Can you send some more details on your python program? Maybe I have some
time to check it out how it works.

Luigi


On Mon, Feb 13, 2017 at 9:22 AM, Luigi Tarenga <luigi.tarenga at gmail.com>
wrote:

> Hi Martin,
> the official rtl-sdr driver has been forked many times on github.
> Still I can say that the tuned bandwith is tunable with the official
> driver.
> The exported API is:
>
> On Mon, Feb 13, 2017 at 1:13 AM, Martin McGlensey <mmcg29440 at frontier.com>
> wrote:
>
>> I have a Panadapter program, written in python, that throws an error
>> “undefined symbol Set_Tuner_Bandwith in librtlsdr0” Searching the net I’ve
>> found that set_tuner_Baandwith may have been dropped from the library. I’m
>> using version 5.3. One web site said that it had been added back in the
>> latest revision v0.7.0. Tried loading the new library and now find that
>> RTL-SDR requires dependencies found in librtlsdr0 version 5.3. Is there a
>> work around to eliminate this error. I did download the latest rtl-sdr but
>> it will not compile because of the dependency problem
>>
>>
>>
>> I did not write the program so I hesitate to take it apart and I have not
>> received much help from the author. BITW I’m not the greatest linux person
>> so I need clear answers. Having said that all responses will be appreciated.
>>
>>
>>
>> 73
>>
>> Marty, N3MOW
>>
>
>
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