1: mach phat song FM >>xem so do mach dien Mach phat song FM tan so 88-102mhz. Tam xa 50-100M tuy tung dia hinh. Ung dung: lam micro khong day, phat nhac , truyen tin hieu dieu khien, may nghe chom, bo dam..T1 tao dao dong tan so cao, T2 khuech dai song cao tan. Linh vuc cao tan la linh vuc rat kho nen phai kien tri can chinh thi moi thanh cong. Lap rap va can chinh: lap theo so do, lua chon linh kien tot de cho hieu suat cao ,khong bi sai lech. Co the tan dung cach linh kien o cach radio cu. Mach thiet ke cang ngan gon cang tot. Sau khi lap song kiem tra va cap dien. De can chinh ban can phai co 1 chiec may thu thanh FM(radio) dieu chinh tan so khong bi trung voi dai phat thanh cua dia phuong. Dung que go hoac nhua co gian cuon cam L1 de co tan so nhu mong muon. Luu y: theo kinh nghiem thi cuon day L2 nen dung loai day nho quan 20vong tren dien tro 1k han chat 2 dau de phoi hop tro khang tot hon. Minh da lap thanh cong va su dung rat tot. Co thoi gian minh da dung mach nay de phat nhac tren he thong phat thanh khong day dia phuong, sau nay ho phat hien va dung ma khoa de khoa lai nhung viec vuot qua ma khoa cung khong co gi la kho. Neu dung anten cua dan tivi lam anten thi co the phat xa 200-300m. Anten 30cm phat xa 50-100m chat luong am thanh kha cao. De phat nhac ban nen go bo micro ket hop dien tro va tu dien de co tin hieu am thanh phu hop. Am lon se lam lech tan so va bi meo tieng. Am thanh nho qua thi am thanh thu duoc se rat nho. Chuc cac ban thanh cong
