third rural range test, ad-hoc mode
quozl at us.netrek.org
Fri Jan 12 06:52:32 EST 2007
The earlier test today was on slightly undulating terrain, plus or minus
half a metre, which made quite a difference to communication between the
units. Pings were lost in a dip at about the 800m mark.
I still felt the need for exercise, so I did another test, on another
range, this time a sealed road section 1.3km long with slightly raised
ends (2m), and no undulation, so that terrain wasn't as much of a problem.
The two laptops communicated fine over 1.3km, with the same 10 Hz ping,
also carrying a 44100 Hz audio stream of wind noise in WAV format over
Signal level was -83 dBm, noise level was -89 dBm, bit rate shown by
iwconfig was oscillating between 5.5 Mb/s and 11 Mb/s for the unit
transmitting the audio stream, and 1 Mb/s to 2 Mb/s for the unit
Are there any transmit power knobs to twiddle?
Now I shall have to find a longer road ... and maybe get someone to
drive me over the range rather than walk it ... the road goes ever on
and on ... met a black snake on the way back, warming itself on the
surface, but it wasn't interested in the project. Nor was the wallaby
or the rabbits. The flies were interested, though.
James Cameron mailto:quozl at us.netrek.org http://quozl.netrek.org/
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