G'day, My wife Petria and I did some more testing this evening. Summary of results:
1. ears down hindered connectivity, especially if the ears pointed toward or away from the access point, converting good coverage to marginal, but we haven't quantified the effect yet, 2. successful operation at 100m and 200m distance tested between all three laptops against an access point, to establish a baseline for further tests, 3. two of the three units were able to re-establish and operate a wireless network connection over 1.5km from the access point, to the point of pinging, All three BTest-1 units are running olpc193_A62.zip from Mitch. The access point has been mounted below the rain gutter on the side of the farm house, with both antennae connected. The antennae are about 2m off the ground. We've made a log of battery capacity, signal level, noise level, and ping time, at one second intervals, on each laptop. Petria's test notes are attached. She was my scribe. Timestamps there are relative to the kernel clock of the unit under test. No ntp or rdate. Trac #595 and #596 raised for a couple of observations regarding iwconfig and battery capacity respectively. (One laptop per ants nest nearly happened ... in a wheat stubble paddock with thistles and flies ... but the ants decided to abandon the laptop when I picked it up.) -- James Cameron mailto:[EMAIL PROTECTED] http://quozl.netrek.org/
One Laptop Per Child (OLPC) Radio Range Testing
19/Dec/2006
7:30 - 8:30pm, just before to just after sunset.
Still, fine, hazy, slight cloud cover, comfortably warm, estimated 27 degrees C.
Waypoint 114 = Access Point, "Coomooroo" verandah.
Test A Waypoint 115 = 100m East of Access Point.
Laptop held at James' belt height,
James facing West (toward Access Point),
book mode, ears perpendicular to screen.
Test B Waypoint 115 = 100m East of Access Point.
Laptop held at James' belt height,
James facing West (toward Access Point),
book mode, ears stowed.
Test C Waypoint 115 = 100m East of Access Point.
Laptop held at James' belt height,
James facing North (perpendicular to Access Point),
book mode, ears stowed.
Test D Waypoint 115 = 100m East of Access Point.
Laptop held at James' belt height,
James facing West (toward Access Point),
laptop mode, ears vertical.
Test A Q3 Test start 08:36:13 Test stop after one minute
Test B Q3 Test failed (lost ping)
Test C Q3 Test start 08:39:42 Test stop after one minute
Test D Q3 Test start 08:41:40 Test stop after one minute
Test A Q1 Test start 19:44:40 Test stop after one minute
Test B Q1 Test failed (missing packet, timed out)
Test C Q1 Test start 19:46:39 Test stop after one minute
Test D Q1 Test start 19:47:56 Test stop after one minute
Test A Q2 Test start 19:52:01 Test stop after one minute
Test B Q2 Test failed (Ping loss, lost association)
Test C Q2 Test failed (Very lossy, halting/starting)
Test D Q2 Test start 19:55:42 Test stop after one minute
Test E Waypoint 116 = 200m East of Access Point.
Laptop held at James' belt height,
James facing West (toward Access Point),
laptop mode, ears vertical.
Test E Q1 Test start 20:01:24 Test stop after one minute
Test E Q2 Test start 20:03:32 Test stop after one minute
Test E Q3 Test start 09:04:33 Test stop after one minute
Test F Waypoint 116 = 200m East of Access Point.
Laptop held at James' belt height,
James facing West (toward Access Point),
book mode, ears perpendicular to screen.
Test F Q3 Test start 09:05:57 Test stop after one minute
Test F Q2 Test start 20:08:18 Test stop after one minute
Test F Q1 Test start 20:09:21 Test stop after one minute
Test G 20m north of Waypoint 117 (The Glen intersection)
Laptop held at James' chest/shoulder height,
James facing South (perpendicular to Access Point),
no other laptop within 20m radius,
laptop mode, screen vertical, ears vertical.
Test G Q3 Test start 009:26:01 Test end 09:26:41 (lost signal)
Note Q2 Gained connection 20:29:17 (5m north of Waypoint 117 (The Glen
intersection))
Test G Q2 Test start 20:30:23 Test stop after one minute (very
successful)
Test G Q1 Test failed (would not associate/reconnect)
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