Is the External Antenna for Globe Wimax Modem Necessary?

Date

I’ve been researching for a while now on how to further improve my Globe Wimax download speed.

Previously, my plan was 512kbps and I haven’t had a problem achieving that speed after doing some “tricks” that I discussed in my previous posts (http://www.jcmiras.net/surge/p307.htm and http://www.jcmiras.net/surge/p239.htm). I recently upgraded my plan to 1 Mbps, but almost two weeks after, I have yet to achieve a consistent and stable download speed of 1 Mbps, although in some rare (note RARE) instances, download speed reaches to 700kbps - 1 mpbs. Also, during speed testing, download speed, sometimes, pulsate to that range. But what I want is a stable and consistent 1 Mbps.

Currently, my Wimax signal strength is 100% but according the Globe Customer Support, I should also observe the CINR values. CINR should be atleast 15dB, however, they did not guarantee if I should be able to achieve 1 mbps speed once I get a CINR of 15db. My personal assessment is that I still won’t be able to reach that since this is just the boundary of good and bad signal quality. According to some websites about Wimax modems, the CINR value is considered very good if it’s atleast 20 dB. My current CINR is only around 16.5 dB, not good enough I think.

I have done placing my modem in different places of my house but no success so far, to improve the CINR. I also tried to move around the external antenna but it just makes the received signal weaker, which still confirms our previous pronouncement that external antenna is not needed.

I researched about the Wimax modem’s antenna until I found a seemingly reliable source to confirm whether the external antenna is, actually, necessary to improve the Wimax signal. According to the Huawei bm622 modem manufacturer’s website (huaweidevice.com/worldwide/productFeatures.do?pinfoId=2567&directoryId=2742&treeId=742);
Question: Does the external indoor antennas are necessary?

(1) No, because the there are two Built-in Internal Antennas, we can use the external indoor antennas if the signal is terrible (2) Do not connect the antennas when lightning, and the interface is only for indoor antennas not outdoor one.

Base on that statement, the built-in antenna should be sufficient to achieve the desired signal strength/quality, and I believe it is, since my signal strength is already 100% even without external antenna.  This is a good discovery so that we could already factor-out relying on external antenna to achieve good Wimax performance. Please note also that the external antenna has only a gain of 10dB. Besides, according to the Globe technicians, the built-in antenna of globe Wimax has higher gain than the external antenna, although I have not confirmed it yet.




  • **But what I want is a stable and consistent 1 Mbps.**

    you cannot attain consistency=1Mbps - bandwidth and speed varies, 1Mbps is your allotted maximum speed and thus it varies below mostly. Some speed meters are not that closely accurate. you can try testing your bandwidth speed by downloading a certain file (eg. 500mb file size) with a download manager. in your download manager , it will show you your current download file transfer in KB/s (kilo bytes per seconds). For ex. you have 120KB/s downloading convert that into Kb/s or Kbps (kilo bits per seconds) and you will get 960kbps which is closely to 1Mbps.

    The use of external antenna is to have a better RF recieve gain from radio transmitters over that Base Station. But since 4G is above cellular frequency, it can penetrate to walls, buildings and some obstructions...that only if you are nearer to the base station.. If you are that far and receiving poor signal, you need to have an antenna to provide you a better reception of 4G signal and that would allow your modem to hear the noise ratio coming from or the 'CINR' inorder for your request/transmitted data travels to its bandwidth frequency over the air.

  • jcmiras

    @Conrad

    Thank you very much for your input. It surely gives clarification specially on the technical side. Regarding to the issue of consistency, although, I fully understand the concept of Maximum speed and the "up to" qualifier in the telco's advertisement, I beg to disagree that consistency, atleast for a minimum period of time, is not attainable. First, 1 mbps is not the maximum capability of the modem and I think, the base station also, it is just capped @ 1 mbps if your subscription is 1 mbps. According to the modem manufacturer - Huawei, although I already forgot the exact number, the maximum speed capability of the modem is around 15 mbps. If the signal quality is not good, the maximum possible speed would be say 50% below the maximum speed of 15mbps which is, say 7 mbps, still well above the capped speed of 1 mbps. Second, my old plan is 512kbps, why is it that I am able to achieve that speed stable and consistent?

    My premise here is that 1 mbps is the capped speed for 1 mbps plan and not the maximum possible speed. Thus, it should be able to achieve that. Otherwise, I think Globe have chosen a primitive wimax modem technology.

  • opensourcedc3

    logically...globe has capped wimaxx service up to 1mb only and a point something (.#) greater than this could just be a positive tolerance..either way, if we could attain a 3, 5 or 15mb speed then they should have offered it in the first place...right?
    http://site.globe.com.ph/web/b...

  • jcmiras

    The answer to that "right?"question is "I don't know". Maybe only Globe can answer. You may need to refer to this blog about the uncapped speed issue-> http://www.yugatech.com/blog/t...

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