I posted yesterday asking how can I have signal inside my house which my house is obstructed by a hill from direct signal from the cellular's operator' Base Transceiver System (BTS). The schema of the system will be something like the first picture, but could be with additional electronic device in between the two antennas to make the system become active. But one commented and shared a link here which asked the similar question which from my understanding, the schema should be like first picture.
I also searched in Youtube if any can help and solve my problem. Then I got these two videos (video 1: 850mhz cell phone signal booster Yagi antenna and video 2: Homemade portable 1800mhz 4g LTE signal booster). The schema are something like the second picture. From the two videos, the folded cable at another end are acting like antenna to the attached mobile phone.
From the schema 1, one commented quite comprehensive. If I didn't understand it wrongly, he recognized that the system is working but with some limitations and he recommended that rather than to make himself, better to buy with only $100. Then my question for both the schematic:
- Are they really work?
- If they are really work, how they work without any active device?
The second schema (the two videos) I tried and both are didn't work. But my failure could be due to wrong design/installation. That's why I ask here. And I appreciate any helping comment.