Are we sure that the antennas are for the right wavelength?
By "linksys" I guess you mean a dongle from an 802.11b,g
router? Do they have the same connector as your Tmote?
And are the connectors seated well?
Also, you're sure you disabled the internal antenna?
I think there's a capacitor that needs to be removed
on the standard Tmotes.
...I guess I should try this sometime...
MS
André Miguel de Almeida Marrão Rodrigues wrote:
Hello
I have tried these kind of antennas and it also did not work
in an indoor scenario with 2 walls.
For 200mts in your scenario perhaps you should use TMoteMiniPro or other
nodes with a power amplifier.
André
----- Original Message ----- From: "subhash nemani"
<[EMAIL PROTECTED]>
To: <tinyos-help@Millennium.Berkeley.EDU>
Sent: Thursday, September 13, 2007 11:41 AM
Subject: [Tinyos-help] external antenna
we have tmotes without internal antenna and provision for external i.e
SMA connector .i have connected linksys 7dBi antennas
but it is not covering even a distance of 20 mts
what might be the problem???
please help me in this regard
i have tired the power settings using commands at the cygwin prompt
also but no result
atleast i need to transmit the signal for 200mts
plzzzzzzz help me ....
thank u in advance
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--
Platform: WinXP/Cygwin
TinyOS version: 1.x, Boomerang
Programmer: MIB510
Device(s): Mica2, MicaZ, Tmote
Sensor board: homebrew
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