I mounted External LPDA, it was not breeze of a task since it doesnt comes with mounting manual or anything, Thanks to @TaZ30 for that youtube link. kept it as a reference. Mounting angle matters. earlier i mounted straight top down dint see much gain, but after mounting +45 and -45, i could see the difference. Seller had shipped mounting setup which had only one U type bracket which made it confusing, since all the youtube videos had two in there setup for each antenna and finally i could figure it out and completed the setup.

Earlier i used to get Something to none with Airtel at home

Now after this Setup

My only concern is after placing Antenna at line of sight of Airtel tower which is around 300 to 400 meters away, i see 50 percent signal strength of band3 and 75 percent for band 40, Does signal strength matters, how can we make it 100? Also SNR i see fluctuating from 8 to 11db, there is clear line of sight to tower, dont know why is the value is less? RSRQ at -14 dbm and RSRP at -53 dbm.

Am glad i took CAT6 device else without career agreegation i would had got around 10+ speed in any of the bands,i get minimum 30 at any given time due to Career agreegation,but upload comes around 2mps, if i agreegate 3,40 i get upload speed of 8mps but download soars down to 20mps. I have planned to change bands when there is a need for better upload, sticking to 40,40 for now.

 Now Stable internet due to this antenna at place where 2g competes in speed.what more can be better!!

@AkashDev Good to see that 40C combination is working great at your place. Airtel has few states only where 40C CA combination is implemented and all other India states have 40A CA combinations implemented by Airtel and JIO both the provider. 

So, we need 40A (40A+40A) CA support on MR600. I have tested on my MR600 with Airtel, JIO both, and 40A+40A CA mode is not working on MR600, but the same is working great in Mumbai on the phone devices Samsung S8, J8, J5 Pro, and Oneplus 7, Redmi Note 9 Pro. Vodafone does not operate on Band 40.

@TPLINK  Eagerly waiting for the 40A+40A CA combinations firmware with band selection feature in the general firmware. please advise the timeline for the same.

@AkashDev Wonderful attempt. Appreciated. You have achieved a great bandwidth. I too tried this 45° angle thing. But for me, as you mentioned signal strength was always at 50% of so with speed ranging between 25-30 mpbs. But I noticed that the speed is not consistent. Very high in the morning hours and slow in evening. Max I could reach was at 51mpbs by morning 7am. SNR was at 1 to 5, RSRQ -15 to -18

I made a change. I connected both LPDA antennas straight up (Up direction up) with 2 poles without 45° angle. Distance between each pole approx 4 feet apart. By doing this, I have a speed of minimum 25mpbs at all times, even in peak hours with an upload speed of minimum 18mpbs. Early morning hours I get up to 65mpbs. RSRQ is -10 to -11, SNR >10 at all times.

By doing this change, I notice that CA is not broken. It is always at 3,40 band aggregation. 

In my case, I have a problem. I live in 10th floor of a building; meaning i need to direct my antenna towards tower with a downward inclination. (Up floors always suffer from LTE reception). I do not have open terrace. I have only a balcony, which has full fencing. Even with antennas mounted outside fencing, fencing behind acts as a detterent. But still fixing individual antennas with 5 feet space between each other helped improve.

@mallipoo Thanks and great that you have found a solution. for me for band 40c i am getting 75% signal strength, tested for whole day and i see 30+ at constant, Sometimes reaches 45 thats the max i could see, here there is a weather condition, its raining from couple of days and high winds which make antenna shake, last night due to high winds the pole had rotated and antenna's were facing sideward. I had to fix that. need to see if weather conditions interfere in signal propogation, will test when weather is right. 

         Also you can try this, i found it somewhere

for me with present setup found it hard to mount such way. But you can give a try.

Hi Tp-link,

Can I request please to include 'Auto' in band selection? 

Thank you, 

@AkashDev Thanks. This cannot be done with a single pole. This manufacturer has made a clamp to fit this way. We do not get this type of clamp.

Since I have 2 poles, I will try and update in next 2 days.

@Kentthegreet1 Just switch off band select option. It becomes auto.

@AkashDev  I was watching a few poynting antenna videos. For ideal performance, they mentioned the distance between the antennas should be based on the bandwidth frequency. And the minimum distance for LTE was around 30 cms. This distance avoids something called Coupling between the antennas, and gives better performance.  If you are curious try moving the antennas a little farther. I will share the video once I find it in the day.