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EX0DX Kyrgyzstan. From DXNews.com
iz4wnp 1 Gennaio 2022
Andrea, HB9DUR will be active again as EX0DX from Kyrgyzstan, until 10 January 2022.

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VP5P VP5/AF3K VP5/W2TT Turks and Caicos Islands. From DXNews.com
iz4wnp 1 Gennaio 2022
VP5/W2TT and VP5/AF3K will be active from Turks and Caicos Islands, IOTA NA – 002, 23 – 31 March 2022.

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PJ5/W5JON Sint Eustatius. From DXNews.com
iz4wnp 31 Dicembre 2021
PJ5/W5JON will be active from Sint Eustatius Island, IOTA NA – 145, 26 April – 4 May 2022.

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JT4RR Mongolia. From DXNews.com
iz4wnp 31 Dicembre 2021
Mats, SM6LRR will be active as JT4RR from Mongolia.

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Visualizing the effect of a low pass filter on harmonics
iz4wnp 31 Dicembre 2021
I thought I’d share this little experiment, I found it quite interesting. Antenna Antennas Vs Trees May 04, 2021 No…

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The Best Amateur Radio Links of 2021
iz4wnp 30 Dicembre 2021
A list of best new amateur radio links we reviewed in 2021