I already computed the focus of my Improvised Parabolic Dish to maximize its signal gain using this formula:
My Improvised Antenna
My Speedtest as of 6/23/2011
My Improvised Antenna
My Speedtest as of 6/23/2011
Quote:
| Here is my explanation why negative(-) value RSSI is better than positive(+) value RSSI. Basic Algebra -1 is greater than -2 +2 is greater than +1 Speaking of RSSI, mataas ang value nya kung negative na small number like -1 or when the number is closer to zero. For example, in Mathematics which is bigger? -1 or -2 ? my answer is -1. So, thats why the closer the value of RSSI to ZERO is an indication of good stable connection and signal strength.  |
Save Mother Earth
How to Extend your USB cable using Utp Cable
USB Cable
The USB cable provides four pathways- two power conductors and two twisted signal conductors. The USB device that uses full speed bandwidth devices must have a twisted pair D+ and D- conductors. The data is transferred through the D+ and D- connectors while Vbus and Gnd connectors provide power to the USB device.
USB Wiring connection
The USB cable has typically four wires to connect the A type connector
Red + 5V Pin 1
White D+ Pin 2
Green D- Pin 3
Black Gnd Pin 4
Step by Step Instructions:
1. Green wire from usb(D-) --> ilagay mo sa green wire ng utp.
2. White wire from usb(D+) -->ilagay mo sa white/green ng utp.
3. Red (+5V) from usb --> ilagay mo sa orange + white/orange ng utp.
4. lastly, Black(GND) --> ilagay mo sa brown + white/brown ng utp.
So ung excess na blue + white/blue either na cut mo na lang or gawin mong reserve.
or visit
http://www.instructables.com
Quote:
| NOTE: You should only make 8 meters and below of Utp cable to have the best result, tried and tested by Boss Natzki, Slayer Me, Myself and I. Use only 1.5 or 2 meters USB extension when you are using a laptop. It is not advisable to use in laptops when the USB extension cable exceeds 1.5 or 2 meters due to insufficient power supply. The laptop might not recognized the Tattoo Modem.. Good Luck! |
Compilation of Improvised Antenna
NOTE: I really do believed that very long usb extension cables can greatly affects the transfer rate of the device because of high resistivity level. Kung gusto nyo ng Effective na usb extension, I suggest na yong 3 meters na usb extension from cdrking kasi hindi matakaw sa power.
Meron kasi ako dito 5 meters pero minsan 0.0kbps ang transfer data nya kung matagal ng naka connect at kung nag ddownload ako after 4 - 5 minutes naddc na cya.
Meron kasi ako dito 5 meters pero minsan 0.0kbps ang transfer data nya kung matagal ng naka connect at kung nag ddownload ako after 4 - 5 minutes naddc na cya.
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4 comments to "TUTORIAL IMPROVISE ANTENNA FOR USB MODEMS"
Anonymous says:
wala na ba nakalagay sa aluminum circle na wire?
hey says:
wala na po. kasi yung usb extension naman yung gagamitin dito
Anonymous says:
tanong ko lng po kung ano yung ikokonek sa computer..usb cable ba o yung utp cable na mismo.. kc po naisip ko na dalawang usb cable ang gagamitin ko...ung isa dun ikokonek sa ubs modem(smart), ung isa nman na usb cable sa computer ikokonek..at ung utp cable sa gitna ng dalawang usb cable...tama po ba gagawin ko o mali..kc kung utp cable ang ikokonek sa computer isang usb cable lng gagamitin ko..sna nsundan nyo sinabe ko...tnx po..
hey says:
yung usb cable po yung i coconect mo, ginamit lang naman po kasi yung utp for extension para di ma loss yung voltage niya.