0 ความคิดเห็น/ตอบกลับ - 8901 เข้าชม
Simple VHF/UHF Ground Plane antennas for under $20 These antennas have appeared in numerous publications over the years, including the ARRL Antenna Book, and are only limited by your imagination as t ...
17-5-2014 14:59 - info - สายอากาศ-สายนำสัญญาณ