Java Socket on low bandwidths

Hello!
I am currently working on a project where we try to use Java technology (through Jini) over an HF radio link. That means we're working with bandwidths down to 75 b/s. And we are experiencing what we suspect is a timeout when we try to make a new Socket.
What happends is we get a 'NoRouteToHostException: connection timed out', and it seems to us that this happends in the Socket constructor. That means we never get the chance to set the SO_TIMEOUT or other Socket parameters since the exception (seemingly) is thrown during Socket creation.
This is mainly a problem on the lowest bitrate (75 bits per second), but we have also experienced this with 150 b/s. Not on a regular basis, though.
We are about to write this off as being caused by some timeout in the Socket constructor which we have no chance to modify, but we would welcome any information that can help us understand this.

75 b/sSo you get an effective rate of 9 bytes per second.
That sounds like fun.
Presume the IP packet size is 128 bytes And there is also a host lookup then it takes a minium of 4 packets. Which means 56 seconds to connect. And that is with no processing time. And no lost packets.
Are you using a host name or just an IP? If the host name I believe you can do a lookup on that first and then use the IP. That would make a timeout less likely.

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