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Re: [Discuss-gnuradio] gmsk2 (new tunnel.py)
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] gmsk2 (new tunnel.py) |
Date: |
Thu, 22 Jun 2006 13:46:44 -0700 |
User-agent: |
Mutt/1.5.9i |
On Thu, Jun 22, 2006 at 03:32:10PM -0500, Brett L Trotter wrote:
> I've got two machines with one usrp each using basic tx/rx board pairs.
>
> As soon as I start tunnel.py on each and set the ip's, one machine
> (usually the one started second) starts showing BBBBBBBBBBBBBBBBB.....
>
> If i disconnect wires, both sides go silent, reconnect and one or both
> start showing BBBBBBBBBBBBBBBBb...
>
> what is the 'B' anyway?
'B' means "backoff".
It prints a B everytime it attempts to transmit if it detects carrier.
> I cannot ping between the hosts.. what am I missing?
First off, this example will only work with RFX-* daugherboards, not
the basic tx and rx board. Why: we currently can't enable/disable the
transmitter on the basic tx board.
If using a RFX-* board and you see this, try setting the rx gain lower
and/or the carrier sense threshold higher.
$ tunnel --help
will give help ;)
Eric