I am sharing an email I received from Jeorg at Klingenfuss.org regarding increased solar propagation and the threat to satellite and wired communications in times of war. For those who may not know, Klingenfuss aggregates utility, shortwave, military and other HF frequency lists in book and CD form. I received this email as a customer having purchased their latest “Super CD” earlier this year. I am not affiliated with them other than as a customer, and this email did not come to me as a sales pitch. I do however think their software is a good value for the money. for what that may be worth! – Robert, K4PKM

Dear friends,

solar activity is increasing rapidly and provides excellent HF

propagation conditions on frequencies above 20 MHz as well. Sunspot

numbers have ramped up pretty fast: in February 2023, the NOAA number

already reached more than 200 – while the maximum of the current

solar cycle 25 is expected not before mid-2025! See our screenshot of

2 April 2023 at

www.klingenfuss.org/kiwikiwi.gif

In these times of war, remember the key fact: shortwave = HF is the

only medium for inter-national and inter-continental communication

that, unlike e.g. SATCOM, landline connections, and submarine cables,

cannot be blocked, censored, or cut off. What’s more, there are no

call costs or monthly fees.

Increased vulnerabilities to cyber and SATCOM – coupled with state-of-

the-art HF communications capability and capacity – is making

military services worldwide rethink their communications planning.

Says DA Reporter at

www.defenseadvancement.com/news/australian-defence-force-upgrades-hf-

communications-system

“In a modern threat environment, access to local communication

infrastructure or satellite communication cannot be assured. Having a

communications capability that can work seamlessly with the

Australian Defence Force and its allies is essential. Starting in

October 2023 under the JP9101 – Enhanced Defence High Frequency

Communications System program, the new system will provide Australian

and allied armed forces with the ability to securely communicate

using voice and other data from almost any location across the

globe.”