Wifi Oddities - Raspberry Pi Forums

hi all, i'm using pi in polytunnel data collection (temp, humidity etc) & turn watering on/off required.
it's 80ft down garden, using adafruit usb wifi stick (the 1 decent antenna!) mounted high can it.
after booting works fine 24 hours, starts little flaky - connections bit hit & miss ipad/laptop etc.. blamed power supply @ first did bit of tweaking & have powered 12v car battery via bec (5v@3a) - sitting @ on 5.2v under load. have powered wifi stick directly same source pi (just data connections come pi).
on running iwconfig - connection sits @ 54mb, bit keen basic aquisition - tried throttle in order increase quality on quantity.. pi takes command "iwconfig wlan0 rate 11m" there no change.
ideas ?

thanks
greg

root@veggies:~# iwconfig
wlan0 ieee 802.11bg essid:"#####" nickname:"<wifi@realtek>"
mode:managed frequency:2.422 ghz access point: 80:1f:02:48:48:e0
bit rate:54 mb/s sensitivity:0/0
retry:off rts thr:off fragment thr:off
encryption key:****-****-****-****-****-****-****-**** security mode pen
power management:off
link quality=100/100 signal level=47/100 noise level=0/100
rx invalid nwid:0 rx invalid crypt:0 rx invalid frag:0
tx excessive retries:0 invalid misc:0 missed beacon:0

lo no wireless extensions.

root@veggies:~# dmesg | grep usb

[ 2.428254] usb 1-1: new high-speed usb device number 2 using dwc_otg
[ 2.640031] usb 1-1: new usb device found, idvendor=0bda, idproduct=8176
[ 2.649264] usb 1-1: new usb device strings: mfr=1, product=2, serialnumber=3
[ 2.657932] usb 1-1: product: 802.11n wlan adapter
[ 2.665854] usb 1-1: manufacturer: realtek
[ 2.671561] usb 1-1: serialnumber: 00e04c000001
[ 6.802916] usbcore: registered new interface driver rtl8192cu

fingers crossed - may have been due power saving!
http://www.raspberrypi.org/forums/viewt ... 28&t=61665

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