I've constructed a 144/440 Dual band Open Stub J-Pole Antenna. I saw the plans for this on the internet (link to pla… | Ham radio antenna, Ham radio kits, Ham radio
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J-Pole antenna for 146 MHz, 220 MHz and 440 MHz
ví dụ về lập bảng cân đối kế toán: [42+] Antenne J Pole Vhf Uhf