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| From: | Michael Dickens |
| Subject: | Re: [Discuss-gnuradio] set_auto_tr(), gr_stall, and PTT |
| Date: | Mon, 10 Sep 2007 22:24:14 -0400 |
On Sep 10, 2007, at 10:07 PM, Eric Blossom wrote:
There's no gr_stall. Currently auto_tr mode is used with the packet data examples. See gnuradio-examples/python/digital. There is no explicit "stall", the transmitter pipeline stalls when no packets are being fed into the PHY via the message source.
OK. Well, I'll create a "stall" block and see how it works under a standard PTT scenario.
Upon further reflection, I think doing simultaneous TX/RX might work better when doing the "push" of PTT. That way I can see the TXd signal on the RX side - but then mute it so that the (loopback) sound doesn't come through. From reading the GNU Radio list archives, doing simultaneous TX/RX seems possible using either separate TX and RX daughtercards, or different antennas on a single RFX series daughtercard. I was really hoping to to simultaneous TX/RX using - just- the TX/RX antenna on an RFX board, but I've had no luck doing that. Anyone know if this last scenario is possible? Thanks again. - MLD
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