Re[ltp] placing the Ericsson 3G modem in an X301 with a Sierra Wireless LTE modem

Bjørn Mork
Mon, 25 Jun 2012 13:06:40 +0200

Elvair <> writes:

> Hey, so i did managed to hack th ebios in the end and installed the card =
> the WWAn slot how it was supposed to be.


> Now everything works just fine, im
> using Wacher utility to connect to LTE network, but the connection speed =
> very very low. 

I've never used watcher so I wouldn't know how to find out anything
there.  But I assume you have a serial device (COMx, "modem" or
whatever) you could connect to using HyperTerminal.  There you can get
signal values using the "at!gstatus" command.  E.g.

Current Time:  15759            Temperature: 44
Bootup Time:   1                Mode:        ONLINE         
System mode:   LTE              PS state:    Attached     
LTE band:      B7               LTE bw:      20 MHz  
LTE Rx chan:   3050             LTE Tx chan: 21050
EMM state:     Registered       Normal Service 
EMM connection:RRC Idle       

RSSI (dBm):    -66
RSRP (dBm):    -101             TAC:         78BF (30911)
RSRQ (dB):     -14              Cell ID:     01036700 (17000192)
SINR (dB):     15.6


> Im wondering if im suing wrong antennas to connect my card ? What colours
> should be connected to Sierra and to which connectors?

I do not know if there are any correct answers to this.  Lenovo would
probably say no.  That's why they put the whitelist in the BIOS ;-)

But this is what I'm using with good results (with European 3G bands and
LTE Band 7 - I cannot test anything else):

 MAIN - red
 GPS  - blue
 AUX  - beige

as shown in