2:14pm PDT - October 1st, 2021
Global Optimum NVIS Frequency Map Based Upon Hourly Ionosphere Soundings via https://t.co/6WcAAthKdo #hamradio https://t.co/54Wmoh7vy0
3 retweets 1 likes - wa1gov (@wa1gov)Global Optimum NVIS Frequency Map Based Upon Hourly Ionosphere Soundings via https://t.co/6WcAAthKdo #hamradio https://t.co/54Wmoh7vy0
3 retweets 1 likes - wa1gov (@wa1gov)