HF Propagation Factors (

[@davido.hamilton3254]

I loved all of the 'upper layers' explanation...never boring. Thanx, David.

[@leestanphill1]

Fascinating! Thanks!

[@stephencool8105]

Excellent! Thanks Dave!

[@mikebavoso26]

Thank you, very well done

[@london19657]

Very imformative, thank you. I wrote it all down because I'm new. P. S. I just ordered the book, thanks.

[@jenko701]

Pure Gold .

[@EricSolomon-op8ti]

Good info. A small constructive point….. hold the example materials (book) up longer. So we can take pics to use as reference. Had to replay 5x to get it.
Love Your channel. Majorly Helpful to me & I am Sure Others too.
Thank You SIR!!!

[@JoseArrom]

ARRL. From here to There, 2023/4 Ward Silver, editor. Available thru ARRL or Amazon. I used it to study for my Tech and General license. KE9ANL

[@trishabiesinger]

Have a happy day!😊

[@glenmartin2437]

Thank you, Dave. Have a great week. N0QFT

[@berjo77]

Another informational block of great guidance. Thank you sir. KE8IGL