Hi.
I finally figured it out.
To automatically switch between TX and RX paths it's needed to call
subdev->select_rx_antenna("TX/RX");
subdev->set_auto_tr(true);
On Wed, Sep 23, 2009 at 8:12 PM, Andrey A <for.inven...@gmail.com> wrote:
> Hello.
> I tried connecting antenna to RX2 and signal strength increased.
> I use std_2rxhb_2tx.rbf with RFX2400 DB.
> Am I correct assuming that if only RX is enabled then RX/TX antenna is used
> and if with TX and RX are both enabled TX samples go to TX/RX antenna, and
> RX samples go thru RX2 ?
>
> If previous assumption is right, how to make TX and RX samples to thru the
> same antenna?
>
> Thanks.
>
>
> On Wed, Sep 23, 2009 at 6:54 PM, Andrey A <for.inven...@gmail.com> wrote:
>
>> Stefan,
>> Thanks for reply. I tried std_2rxhb_2tx.rbf firmware from gnuradio 3.2.2
>> and results are the same. Without enabling transmitter at the receiver the
>> received signal range is [-15e3; +15e3], and after enabling transmitter it
>> became [-2400; +2400].
>> The workaround you mentioned is not applicable in my situation, since I
>> need to receive and transmit from the same antenna.
>>
>> I'm not sure if I enable receiver and transmitter simultaneously in the
>> right way.
>>
>> Thanks.
>>
>>
>>
>> On Tue, Sep 22, 2009 at 9:55 PM, Stefan Brüns <
>> stefan.bru...@rwth-aachen.de> wrote:
>>
>>> On Tuesday 22 September 2009 19:47:10 Andrey A wrote:
>>> > Hello.
>>> > I'm trying to build a two-way TDD system with two USRP1 boxes in pure
>>> C++
>>> > using libusrp and inband_2rxhb_2tx.rbf firmware.
>>>
>>> IIRC the ib firmware has a bug not switching the antennaes correctly.
>>> Workaround: set RX antennae to RX2 and connect an antenna to each port.
>>>
>>> Stefan
>>>
>>> --
>>> Stefan Brüns / Bergstraße 21 / 52062 Aachen
>>> phone: +49 241 53809034 mobile: +49 151 50412019
>>>
>>>
>>> _______________________________________________
>>> Discuss-gnuradio mailing list
>>> Discuss-gnuradio@gnu.org
>>> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
>>>
>>
>>
>
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