2:14pm PST - November 7th, 2021
Global Optimum NVIS Frequency Map Based Upon Hourly Ionosphere Soundings via https://t.co/6WcAAthKdo #hamradio https://t.co/C5v4ULMqA4
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/C5v4ULMqA4
0 retweets 0 likes - wa1gov (@wa1gov)