The complete component is as follow
1 x project box for casing
1 x 4700 uF Electrolyte capacitor
1 x 1000 uF Electrolyte capacitor
2 x 4.7K Resistors
2 x Antennas with SMA male connectors
1 x USB female port
2 x SMA female connectors
The output of the result is very interesting - although there is no sign of signal indicator increase on the Huawei-E5577 modem but the internet connection looks faster than usual and it is very consistent. Despite of having 1 bar 4G signal the internet still capable of loading YouTube videos very smoothly and serve the internet normally.
I understand that this amplifier is not capable of delivering 4G signal but the RF amplification via the LM386 seems to have effect on the HuaWei-E5577 modem. Noted that the amplification doesn't seem to work on normal smart phone device. Not sure what exactly the cause.
Anyway now i can enjoy consistent internet speed that have been poor for the past 9 years. It's different this time.
NOTE: Some people may not believe this works - but please take be reminded i do not post something that doesn't work. And at the very least it works for me.
NOTE: Some people may not believe this works - but please take be reminded i do not post something that doesn't work. And at the very least it works for me.
4G Amplifier / booster circuit schematic diagram
IMHO it is better of you provide the gain chart. Thanks
ReplyDeleteYeah its true but its unfortunate sometimes not all can afford the tools to measure the gain, signal etc. But all i can tell is that it work's
DeleteHello my friend, I have a project for GSM signal booster, is the circuit above works well, is it need to connected with a modem, is there anything instead of modem can I put it? if you have telegram chat me on my ID
Deletetelegram: adking98
amd thank you
Which voltage i have to choose for capacitor?
ReplyDeleteuse around 16 v or 25 v is good enough...don't go less because the LM386 only use 5 volt to 9 volt...u can you high voltage cap but not efficient
Deletei made it recently and found that it works only in 20cm radius...this is not for physical use so dont waste your time and money....thanks.
DeleteI don't believe this is a waste of money...the cost of the project probably less than $5 not only it gives you the idea to make larger thing you will learn something from it
Deletecan you provide me 100% working 3g network booster circuit diagram?
ReplyDeleteKitna voltage ka capcitar ka use karna parega Kya yah 4g network par work karga
ReplyDeleteI don't speak indian sorry...i live in the land of Borneo
DeleteHe just asking about which voltage of capacitor he can use to get the 4G network.
DeleteSearch for tank circuit a combination of capacitor and resistor in parallel.. The voltage of capacitor for high frequency doesn't need to be so high for electrolyte polarized can be 15 volt or the ceramic 50volt is fine
DeleteLM386 working well until 100khz and not 1 GHZ or more So i wondering that u posted
ReplyDeleteThat actually early experiment if anything within lower frequency transmission can have effect to the 2.6 Ghz 4G signal. Now the circuit has been dismantled and replaced with another one...research still in progress
DeleteThe tools i am lacking is the absent of measuring tools like UHF frequency counter or oscilloscope. That really greatly affect the work there is nothing to measure the frequency output.
Sir,where is the voltage of this project please reply me clearly...it's not clear for me what pin of the IC did i put voltage supply.l am very interested in this circuit sir, because I leave in the rural area...thank you very much
DeleteHi thank you for your interest it is powered by USB - so it's actually always 5 volt you can easily have that amount of power either by battery or by usb power supply from your pc or smartphone adapter
DeleteYou can try a mar-6 rfic IC instead off lm386 that is for audio frecuency
ReplyDeleteYeah i have that in the process
DeleteI made that circuit but it'snot working with normal antenna
Deletedear in circuit diagram only one resistor show. where put 2nd resistor? 4.7k.
ReplyDelete2nd where you connect 2nd wire of antenna.?
connect to pin no.3 and pin no.3 connect to antenna
Deletedear in this picture 2 wire connect with both antenna. black and silver wire. i ask about black wire.
DeleteOh the black is connect to ground (negative) and silver connect output
Deletewhire I give power supply in the ic pin?pls giive pin no + & -
DeletePlease tell about capacitors voltage rating and where we have to placed the 2resistor and send total circuit details
Delete10v capacitor with capacitance of 100uF is fine..but your question about 2 resistor i dont understand?
DeleteCan you make video for this booster if u can
ReplyDeleteYeah sure but wait i get a measuring equipment to measure the signsl gain
DeleteAny changes on the antennas to increase working radius? It is found to be useful under 50cm radius.
ReplyDeletewhere second resistor connect??
ReplyDeleteUse in 35v \4700uf cap no problem?
ReplyDeleteno problem
DeleteHow to prove the circuit is working?
DeleteI dont have the equipment but you can go to a place where signal is really low and test with that signal booster if your phone is getting good signal than its working
DeleteYou might be getting other band frequency. One bar from stronger band still gives you much more speed. BTW have you got this with phones ???. Even putting phone too close to the output antenna... Thanks
ReplyDeleteYou could try solder it to 3.5mm jack and plug it directly to your phone on the 3.5mm headphone port
DeleteSir where to fix the 2 resistors 4.7k in YouTube it's shows only 1 resistors u fix and another where to fix?
ReplyDeleteApologize for the diagram you can actually connect the other 4.7k resistor between pin no.3 and the antenna. Hopefully that works for your cell phone booster project
DeleteSir this supports 2100 mhz frequency for 4g .and can i use for 12 v power supply for high frequency? what are the component to change?
DeleteAnd sir where to connect the + and - battery?
DeleteIt seems you are very new to electronic but it's a great learning experience for ya...
Deletevs or vcc is positive and label on pin 6 of the LM386 as shoown on the circuit diagram
ground is negative and it is label on pin no.4 of the lm386
Wish you the best of luck with your 2G / 3G / 4G signal booster project
Regarding your 12 volt power supply is not necessary in fact most high frequency devices only require 3.3 volts ...despite of using battery where it will drain easily i would suggest you to use 5 volt USB where you can use it any time as long as you have electricity in place.
DeleteTo boost 2100 Mhz frequency sometimes is not about getting the same frequency but to be able to push the signal (data) faster..if you are using an antenna only to boost your cell phone or mobile internet signal it will become very sensitive to position when the signal is really low. Meaning that when you move the antenna or something like wind shake the antenna it will disturb the signal because it is too low.
So the function of the booster is to push it faster. Despite of low signal but when it goes through the booster it will push the data (in this example internet data) faster to load.
Wow thanku so much sir u says all very helpful to me thanks for explaining.
DeleteDo more projects...
good!!
DeleteWhat if i am making anteena using copper coils, how many turns i should give to anteena for input and output for getting an amplified and boosted signal for 3g/2g/4g network. Can you help me out with this fast, please
ReplyDeleteCoil won't be anygood but there is one antenna that is proven of the years that provide a good reception to 2G / 3G and 4G network it is called Yagi Antenna. To make it will take time but you could buy it from china cost only few dollars like $5 to $10...This will be the ultimate antenna to use in network.
Deletehello sir , how long distance it will cover ??? I need a booster circuit which will cover 10m . please help me i need it. cz i live in a remote area . mobile is only way to communicate . thank you
ReplyDeleteyagi antenna may help you...please search how to make yagi antenna or you can buy from china cheap
ReplyDeletecan you make a movie to explained how it work.
ReplyDeletethank you
Dear sir LM386 we can used also audio amplifier ic ,but here we used as RF network booster .
ReplyDeleteSo can I use another hi power audio amp ic used like a network booster for larger area coverage... ?
You could use very cheap RF transistors such BFG591 like this Simple RF detector
DeleteSir desine keya pr not working
ReplyDelete.
I give power supply through 1.5 volt pencil cell.used 03 cell in series. Total volt is 4.5 v
Which circuit are you trying now? is it the BFG591 or the LM386? if the LM386 4.5 volt is not enough -- you need 5 volt or at least 5.3 volt...use your usb power adapter
DeleteLm386 is low frequency ic chip not work in SHF or UHF range
ReplyDeleteI see these is mistake
You could try BFG591
DeleteThe better version of the 4G signal amplifier circuit can be found on this video DIY homeMade 4G LTE, 3G, HSDPA, Edge, gprs, internet booster it works 95% constant signal and it is place inhouse (my room). Despite most of the service provider tower are far and my room is kind of behind blocked by walls and trees it still work like a charm. This is almost the final version of the 4G signal booster to amplified Huawei e5377 signal.
ReplyDeletePls send me the full circuit diagram in this video pls, lajman2010@gmail.com I'd my mail am waiting pls
DeleteCan I use ( 2k registor or 470uf capacitor) ?
ReplyDeleteYes you can but a recommended if you could use lower capacitance for the capacitor like 100uF or less
DeleteCan it possible to use?
ReplyDelete1. 2k registor
2. 470uf/10v capacitor
3. 100uf/25v capacitor
my important part is registor.
is it possible to use 2k and 9k registor ?
Can I use (3.27K Registor Between PIN NO (2-3) ) ?
ReplyDeleteYup you could experiment that if u have variable resistor would be good to adjust the resistance according to your preference
DeletePower 12 mhz crystal oscillator using transistor BC547
ReplyDeleteThe application of crystal oscillator usually in electronic devices that require frequency - for example the use of crystal oscillator in microcontroller simply to generate frequency for the processor. Other application of crystal oscillator can be found in devices like Television, radio, satellite, walkie talkie, radar jammer, radar, mobile phone, network switches, network modem etc.
The advantage of crystal oscillator is its ability to generate precised fix frequency.
Crystal oscillator comes with many frequency variation and there are fixed from hertz to megahertz range. In radio application usually up to kilohertz range like 32 kilohertz while modem and switches use up to megahertz like 12 Mhz, 16 Mhz, 24mhz, 48 mhz, 56 mhz, 124 mhz, 300 mhz.
Gigahertz range use by high tech sophisticated equipment such as satellite and military.
The design of crystal oscillator actually quite simple - as it consist of quartz crystal which vibrate back and forth (oscillate) and some IC or transistor to drive the oscillation. In high frequency oscillation usually use high speed RF transistors or integrated circuit. The two legged crystal cannot be powered alone and must be help by the driver circuit usually transistor or IC. While the 4 legged crystal oscillator can function without a circuit because as in comes with crystal and built-in ic driver inside the casing.
Your project is awesome sir please do interesting experiment I am very glad to see your effort it is very helpful for me for my knowledge.
ReplyDeletemobile signal booster in delhi
how to make dark sensor - simple diy automatic night sensor that automatically switch on and off based on day and night time. good educational tutorial for beginners and simple diagram to follow
ReplyDeletehow to make dark sensor circuit
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Please can I see that the back view of this circuit?
ReplyDeletePlesPl sir I need video for this project thanks
ReplyDeleteYea sure will do that for you when i have the time today or tomorrow
DeleteMake a vedio in youtube
ReplyDeleteCan u plz explain its working...!?
ReplyDeleteAlso plz upload a video on making it..
Please I hope you guys should not be angry with me this my first time I am visiting here my GSM signal is 1% I want to increase it to 42-50 percent if not for any other thing
ReplyDeletehi i thought this circuit might help you..4G, 3G, 2G, Bluetooth wideband RF detector. It detects any radio frequency signal.
ReplyDeleteNow if you buy a cheap RF amplifier and yagi antenna to combine with the circuit above. It might help you significantly. Thank you for your interest
This project home network cover
ReplyDeleteThis is cheating circuit, LM386 is not work for high frequency.
ReplyDeleteHy., where should i put power supply
ReplyDeleteYou see pin no.6 where it says Vs (that's positive). Connect negative to all the ground symbol show in the circuit diagram
DeleteSir I want this kit will you plz how much this cost
ReplyDeleteLess than $10
Deleteis this really working to boost 3g with 2100mhz? please explain how it works? by using this opamp ic lm386.... and how about distance for strong and bad signal with this device
ReplyDeleteNak beli aci tak??? Utk project
ReplyDeleteIt will not work because LM386 is used for audio amplification not for signals
ReplyDeleteaudio is just a frequency, so if you amplify an already amplified frequency it should in theory create a higher quality signal. Thus this might work. ima try to test it when i can find where this second resistor goes
DeleteSir, can use this for 2.3Ghz 4g signal?
ReplyDeleteYou need to experiment and must use the coaxial cable connector to make sure it works
Deletethank you for sharing this information i think
ReplyDeleteSanitization Tunnel such a great device.
Circuit ini untuk frequensi 4g 2100 mhz atau untuk 4g 2400 mhz ?
ReplyDeleteTerimkasih
pian tinggal di kalimantan mana mas ? Ulun di tabalong nah . Kalsel
olá amigo você tem o diagrama desse projeto de outro modo?
ReplyDeleteHello sir main ek sawal puchna chahta hun
ReplyDeletetuan.. ade no wasap x
ReplyDeleteAbsolutely do not work, friends, do not waste your time. Lm386 works at low frequency, it only makes a virtual jump as if there is a signal on the mobile phone, it does not increase your actual network power. Cell phones work at high frequencies. Lm 386 is low.
ReplyDelete