ORBIT-USER: Radio Reception

[Haris Kremo]

Hi Chris,

Please keep in mind that the nodes are not calibrated, and we are
developing the procedure  these days. In a few weeks we will gradually
remove all nodes, one by one, from the grid and check for sloppy
cards.

In the meantime, I believe Sanjit's got the most experience with RSSI
logging, so he might know about these 2 nodes in particular.

In a few days we should have antenna pattern measurements done
(something we have to do outside Winlab) and that may also help in
regard to your problem.

Assuming you observed this for a single node, my bet is that the
reason is the card on that particular node.

I know this does not help much, but we are working on the issue.

H.

On 8/28/06, chris at orderonenetworks.com <chris at orderonenetworks.com> wrote:
> Hello All,
>
> Has anyone noticed that adjacent radios are much more likely to miss
> packets on the diagonal compared to side by side or up and down?. ie
> node4-8 missing packets from node5-7 orders of magnitude more often then
> from its other neighbors.
>
> I'm noticing this while broadcasting packets in an otherwise quiet
> environment (no beacons, etc).
>
> I need to do a bunch more testing to confirm this, but it could save me
> some time if someone else has already done the work. Or alternatively,
> knows why this might be the case (i.e some radios in the grid don't behave
> really well)
>
> Thanks,
> Chris
>
>