@AP_Techie  there are still some towers where Airtel has not implemented CA yet. The LTE Category in this router doesn't support 2x2 MIMO. but you can achieve spatial diversity by mounting two LPDAs on horizontally . Or may be in different poles parallel to the ground. LPDAs never work better when they are not parallel to the ground when you are at certain distance to the mast. These LPDAs won't give you a better SINR  . I already tried these.  Mount these lpda horizontally and Keep enough space between them to achieve space diversity for a good gain. (This could increase your SINR). Or point at different towers, Avoid antennas to couple and give distance between them for achieving isolation. I doubt this router has Snapdragon X12. But I believe it is having a X7 which doesn't support downlink MIMO. 

Hope it helps.

AP_Techie wrote

@Abhi093 @AkashDev 

My LPDA antennas were delivered a few days ago. But I was out of station, so did not set them up yet. I'm trying to setup the antennas now. I'm looking for your expert advise on how to mount and measure the improvements. Hope you can give some guidance.

 

I'm located in a rural area and the nearest airtel tower is located <1Km with a clear line of sight from the terrace. Both jio and Airtel towers are located in the same area. On net monster and other apps, I've observed that Airtel signals come from 3 different towers. Two other towers are located in different directions, and they are 5-6 kms away. I've not observed 4g+ when connected to the nearest tower. Nearest tower is almost always connected on band-3(1800) and the average speeds from the terrace are 30 Mbps DL and 25 Mbps UL. This is my current setup.

 

I've setup the 12dbi LPDA antennas today. After connecting them to the router I've observed improvement in rsrp, but rsrq and SNR have gone down. I've gotten 10 mtr lmr400 cables ( thought I don't need 10 mtrs really) to connect the antennas to router.  My suspicion is the mounting of antennas is incorrect.  I haven't gotten the 90 degree perfectly, I'm going to retry this tomorrow. 

 

My queries are about the antenna setup. Which portion of the antenna should face the tower? In my current setup, xyz area is facing the tower. Is this the right way to arrange the antenna. 

 

Another question is, shall I mount the antennas on the same pole or two different poles? If I've to mount them on different poles, what should be the right way to setup each antenna? 

 

Your guidance is highly appreciated. Thank you.

 

 

I've attached the signal strength values in the current setup. 

 

@AP_Techie 

Pls check my earlier post . This device doesn't support MIMO in LTE Downlink. You can get space diversity and good gain from two antennas place at some distance to avoid coupling.