I am a serious noob to this sort of thing and I want to build this as part of my school project, so understanding how it works is vital. (e.g Signal comes into the harvesting antennae, from there i goes into the filter, which filters 15-20MHz. Could you kindly just give a brief description of how your device works in a bit more detail? Like s step-by-step guide. Using different antennae, what would be the max range (more/less) that I could get from this type of device?Ĩ. Do you not need band pass filter on the incoming signal of the device? To ensure you filter for only the frequencies you need?ħ. Can multiple devices benefit from the signal output from the booster?Ħ. What is the range of the device you have made?ĥ. If you move your router away from the black antenna, do you lose boost benefits?Ĥ. If I changed the black transmitter antenna with a bigger antenna, would I be able to increase the range of the booster?ģ. If I changed the signal harvesting antennae with high gain antennae, would that increase the amount of signal I can harvest?Ģ. I just have a few questions since I am also trying to build a booster for my work place.ġ. A constant frequency is not good and you must allow it to oscillate to emit the RF signal.Ĭheap WeBoost 4G LTE Booster | Homemade WeBoost 4G Booster | DIY WeBoost Mobile Amplifier | Cheap RF Amplifier | Homemade simple mobile signal booster | hiboost, surecall, verizon, tmobile, wilson booster Connect only the output connection to the output antenna and do not connect the ground because it will provide a constant frequency 20 Mhz. If anything lower than this it could affect the signal strength - please experiment at your own discretion. The crystal should transmit / oscillate around 8 Mhz ~ 12 Mhz at the output and the ground of the crystal should generate around 2 Mhz ~ 4 Mhz. To ensure your circuit works - test using a multimeter with the Hertz mode. I believe different antenna could possibly emitting different signal strength - so self experimentation is required how far it is from the modem. This is the best distance that i have experimented. In my case i purchased special made 4G LTE antenna with two coil on the antenna and placed it within 7 cm away from the modem. Placing too far is also not good because the signal cannot reach the modem. In this circuit do not place the transmitting antenna too close to the modem because the signal output will over powered the modem input signal. That's why if you found a good spot and position where the signal is very strong take note of it because the rest of other positions / placement could be very bad. NOTE: When signal is very weak within your area - the modem signal strength sensitivity becomes very high which means a slight movement and placement (angle) of the modem could effect the signal strength significantly.
And the signal strength is very consistent as oppose to without the amplifier circuit. Despite the circuit output only 20 Mhz but there is quite significant impact of it to the HuaWei Modem signal - as you can see in the video demonstration it could amplify up to 4 bars signal which increase the internet speed within 9 Mbps to 15 Mbps range.
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