สนามสอบวิทยุสมัครเล่นปี 2564
www.nbtc.go.th/Business/commu/radio/licensing/pdf (https://www.nbtc.go.th/getattachment/ef10015a-62da-4b85-bc42-b6f01b005444/%E0%B8%9B%E0%B8%A3%E0%B8%B0%E0%B8%81%E0%B8%B2%E0%B8%A8%E0%B8%AA%E0%B8%B3%E0%B8%99%E0%B8%B1%E0%B8%81%E0%B8%87%E0%B8%B2%E0%B8%99-%E0%B8%81%E0%B8%AA%E0%B8%97%E0%B8%8A-%E0%B8%81%E0%B8%B2%E0%B8%A3%E0%B8%88%E0%B8%B1%E0%B8%94%E0%B8%AA%E0%B8%AD%E0%B8%9A-%E0%B8%AD%E0%B8%9A%E0%B8%A3%E0%B8%A1%E0%B9%81%E0%B8%A5%E0%B8%B0%E0%B8%AA%E0%B8%AD%E0%B8%9A.pdf.aspx?lang=th-TH)
(https://sv1.picz.in.th/images/2021/03/29/DVomG8.jpg) (https://www.picz.in.th/image/DVomG8)
(https://sv1.picz.in.th/images/2021/03/29/DVoFfR.jpg) (https://www.picz.in.th/image/DVoFfR)
(https://sv1.picz.in.th/images/2021/03/29/DVoI50.jpg) (https://www.picz.in.th/image/DVoI50)
(https://sv1.picz.in.th/images/2021/03/29/DVoMHu.jpg) (https://www.picz.in.th/image/DVoMHu)
(https://sv1.picz.in.th/images/2021/03/29/DVDdSZ.jpg) (https://www.picz.in.th/image/DVDdSZ)