USB modem signal strength reading ?

[kdeuser]

Hello,

My 4g Huawei usb modem signal is low , so would like to boost this as to get a stable connection.

It is connected directly into my desktop pc and not a ( router to work over wifi ). Here lies my problem because the tutorials on the net revolve around usb modems plugged into open wrt capable routers.

Network manager does not show signal strength in db or % and even though the Huawei usb modem is listed in NM , it is greyed out.

I am connected to the web via this usb modem at the moment but not a sniff of db / % readings.

Is there a gui (preferably), to show signal strength in db ?

Thanks for helping.

[kdeuser]

I found some information , but is not clear or i am missing something here.

http://niranjanthilak.com/measuring-signal-quality-of-evdo-3g-network-from-usb-modems/

On the command line entered :

root@BM2LTSR66RBin:/media/hd/home/reel# ls /dev/ttyU*
ls: cannot access /dev/ttyU*: No such file or directory
root@BM2LTSR66RBin:/media/hd/home/reel#

So, something is not right.

Next :

root@BM2LTSR66RBin:/media/hd/home/reel# echo "AT^M" > /dev/ttyUSB0
root@BM2LTSR66RBin:/media/hd/home/reel# echo "AT^M" > /dev/ttyUSB1
root@BM2LTSR66RBin:/media/hd/home/reel# echo "AT^M" > /dev/ttyUSB2
root@BM2LTSR66RBin:/media/hd/home/reel#

........nothing happens - and there is no *ok*

Next :

Issued the AT commands for getting the signal power information in the format (xx,99) .

root@BM2LTSR66RBin:/media/hd/home/reel# echo "AT+CSQ ^M" > /dev/ttyUSB2
root@BM2LTSR66RBin:/media/hd/home/reel#

However, no signal level.

This is basically where i´m a little lost.

Some help really appreciated .

Thanks.