2:14pm PST - December 18th, 2021
Global Optimum NVIS Frequency Map Based Upon Hourly Ionosphere Soundings via https://t.co/6WcAAthKdo #hamradio https://t.co/kz6UM2Mpq6
0 retweets 0 likes - wa1gov (@wa1gov)Global Optimum NVIS Frequency Map Based Upon Hourly Ionosphere Soundings via https://t.co/6WcAAthKdo #hamradio https://t.co/kz6UM2Mpq6
0 retweets 0 likes - wa1gov (@wa1gov)