Advanced HF propagation secrets Part 2

For further detailed information on how MUF & LUF is measured see David Casler's video "That Funny Line Is An Ionosonde! (#385​)":-   • That Funny Line Is An Ionosonde! (#385)   You can support this channel financially @ BuyMeACoffee.com:- https://www.buymeacoffee.com/JohnM7CPT Discord Server:-   / discord