[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards |
Date: |
Wed, 8 Mar 2006 14:04:38 -0800 |
User-agent: |
Mutt/1.5.9i |
On Sun, Mar 05, 2006 at 02:21:55AM -0500, Satashu Goel wrote:
>I am trying to find some information on how to use the two Tx
>daughterboards to transmit independent data streams?
>In one of the posts,
>http://lists.gnu.org/archive/html/discuss-gnuradio/2005-10/msg00142.html
>Eric said that this can be done by using a "stream with two interleaved
>channels of I & Q data".
>Does anyone know how to do this using the existing blocks? It will be
>great if someone can post an example.
>
>Thanks,
>Satashu
OK, I've got your example ready. It runs with any kind of
daughterboard on either side. Here's an example of running it with
a basic Tx on side A and a flex 400 on B:
address@hidden usrp]$ ./fm_tx_2_daughterboards.py 10M 446.1M
Using TX d'board A: Basic Tx
Using TX d'board B: Flex 400 Tx
Tuning side A to 10MHz
r.baseband_freq = 0
r.dxc_freq = 10M
r.residual_freq = 0
r.inverted = False
OK
Tuning side B to 446.1MHz
r.baseband_freq = 450M
r.dxc_freq = -3.9M
r.residual_freq = -381.47m
r.inverted = False
OK
Enter ^C to kill it.
It puts out SSB (USB) signals. Side A gets a 600 Hz tone. Side B
gets 350 + 440 Hz (US dial tone). You should be able to hear these
with a suitable receiver. Worked for me ;)
It's checked in as gnuradio-examples/python/usrp/fm_tx_2_daughterboards.py
and is also attached. Yes, you could consider having to manually
interleave the output streams a bug.
Eric
fm_tx_2_daughterboards.py
Description: fm_tx_2_daughterboards.py
- [Discuss-gnuradio] Simulateous transmission from two daughterboards, Satashu Goel, 2006/03/05
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards, Eric Blossom, 2006/03/07
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards, Satashu Goel, 2006/03/08
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards, Eric Blossom, 2006/03/08
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards,
Eric Blossom <=
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards, Angilberto Muniz Sb, 2006/03/11
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards - I've got it !, Angilberto Muniz Sb, 2006/03/11
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards - I've got it !, Eric Blossom, 2006/03/12
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards - I've got it !, Angilberto Muniz Sb, 2006/03/12
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards - I've got it !, Eric Blossom, 2006/03/13
- Re: [Discuss-gnuradio] Simulateous transmission from two daughterboards, Eric Blossom, 2006/03/11