wireless- Tenda541u usb - not working in Ubuntu Heron
 

Perhaps this may help to know where I am:

cat etc/network/interfaces
auto lo
iface lo inet dhcp
iface wlan0 inet dhcp
address 169.254.7.237
netmask 255.255.0.0
gateway 127.0.0.1
wireless-key A1BAE2018
wireless-essid Sodd_Off_54
auto wlan0

sudo ilist scanning
lo Interface doesn't support scanning
eth0 doesn't support scanning
wmaster0 doesn't support scanning
wlan0 Scan completed:
cell 01 Address:00:11:50:80:2E
ESSID: "Sodd_Off_54"
Mode:Master
Channel:6
Frequency: 2.437 GHz (Channel 6)
Quality=52/100 Signal level=54 dBm
Encryption Key:on
Bit Rates: 1Mb/s; 2Mb/s; 11Mb/s; 22Mb/s;6Mb/s; 9Mb/s;12Mb/s; 18Mb/s; 24Mb/s; 35Mb/s; 48Mb/s; 54Mb/s
Extra:tsf=0000024919358e8
Cell02 Address: 00:1D:68:51:A6:2D
ESSID: "BTHomehub-6769"
Mode=Master
channel-11
Frequency:2.426 GHz (Channel11)
quality=46/100 Signal level= .84dBm
Encryption:on
Bit rates:1Mb/s; 2Mb/s;5.5Mb/s; 11Mb/s; 18Mb/s; 24Mb/s; 36Mb/s; 54Mb/s; 9Mb/s; 12Mb/s;48Mb/s
Extra: tfs=00000088f54d7cee

iconfig
eth0 Link encap:Ethernet HWaddr 00:06:5b:e6:c1:11
UP BROADCASTING MULTICAST MTU::1500 Metric:1
RX packets:0 erors:0 dropped:0 overruns:0 frame:0
TX packets:1884 erors:0 dropped:0 overruns:0 carrier:0
Collisions:0 txqueuelen:1000
RX bytes:0(0.0B) TX bytes:0(0.0B)

lo Link encap:local loopback
inet addr:127.0.0.1 Mask 255.0.0.0
inet6 addr: ::1.128 Scope:Host
UP LOOPBACK RUNNUNG MTU:16436 Metric:1
RX packets:1884 erors:0 dropped:0 overruns:0 frame:0
TX packets:1884 erors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:95576 (93.3KB) TX bytes:95576 (93.3KB)

wlan0 Link encap:Ethernet HWaddr 00:b0:8c:03:c0:9f
inet6 addr:fe80::2b0:8cff:c09f/64 Scope:link
UP BROADCASTING MULTICAST MTU:1500 Metric:1
RX packets:1727 erors:0 dropped:0 overruns:0 frame:0
TX packets:63 erors:0 dropped:0 overruns:0 carrier:0
RX bytes:565488 (522.2KB) TX bytes:13897 (13.5 KB)

Wlan0:avahi Link encap:Ethernet HWaddr 00:b0:8c:03:c0:9f
inet addr:169.254.7.237.Bcast:169.254.255.255 Mask:255:255:0:0
UP BROADCASTING RUNNING MULTICAST MTU:1500 Metric:1

wmaster0 Link encap:UNSPEC
HWaddr 00-B0-030C0-9F-00-00-00-00-00-00-00-00-00
UP BROADCASTING MULTICAST MTU:1500 Metric:1
RX packets:0 erors:0 dropped:0 overruns:0 frame:0
TXpackets:0 erors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0(0.0B) TX bytes:0 (0.0B)

I have been trying to do this for some time and getting very frustrated. I would be most grateful for any help,
Many thanks,
Cuddy.