Teachers Institute on Wireless Technology
Teachers Institute on Wireless Technology
2009年1月1日
arrl.org
What is Ham Radio
5:52
What is Ham Radio
2009年1月1日
arrl.org
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Now Shipping! For the first time, The #ARRL Handbook for Radio Communications has been divided into a six volume boxed set. All six books are included in a handsome hard slipcase. Each volume is more manageable to read and browse, and covers a major topic area. You get ALL SIX. www.arrl.org/shop/ARRL-Handbook-2019 #HamRadio #AmateurRadio | ARRL The National Association for Amateur Radio
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