When Bob Thomann and Bob Zanotti got together for their regular “Swiss Shortwave Merry-Go-Round” show during a run of 24 years, it was primarily to answer technical questions about radio, sent in by listeners all over the world.

Although there have been developments in equipment over the years, the fundamentals of HF (high frequency) radio transmission and reception remain the same, and it’s important to understand these issues to obtain the best possible reception.

After very positive reaction to their initial, nostalgic return on Switzerland in Sound in 2004, The Two Bobs are back again, this time to turn their attention to some of the classic and most common technical issues in long-distance radio.