Hi,<br><br>I read from the results of previous WBM's that you could hardly improve performance with a two radio node setup (on 2.4GHz). I spoke to some people on the BATMAN IRC channel and they told me they had attempted to decrease interference by putting a screen between the nodes, but even this was unsuccessful. <br clear="all">
<br>I would like to give my advice on how to build such a screen to stop the interference. I hope that someone will have the time to test it out and hopefully improve performance. To effectively screen off radiation a screen can be built from a <b>single</b> sheet of aluminum foil that is <b>at least</b> two wavelengths (250mm) broad (the broader the better though). The screen should consist of two ground planes with a wall inbetween like two L's put side to side.<br>
<br> |<br> |<br> |<br> Radio 1 | Radio 2<br> |<br>-----------------------------------|-----------------------------------------------<br>
<br>The spacing between the radios and the vertical wall should be a quarter wavelength (roughly 31mm) apart and the vertical wall should also be two wavelengths high. If you can get a hold of 500mm broad tin foil, I would rather make the vertical wall 500mm high too. It is important not to glue several pieces of foil together but to only use a single sheet.<br>
<br>I hope that someone will find this useful!<br><br>Regards,<br>-- <br>Rudolf Meijering<br><br>