This clip is being cited in Chapter 10 (Ground Systems in Limited Spaces). It was recorded by a ham in Tasmania who reported listening to the USA station longpath for several hours one afternoon, with the signal peaking at the time of this recording at his sunset. The absence of QSB (fading) on the USA saltwater vertical signal arguably testifies to the lack of nulls in the elevation plot characteristic of ground-mounted verticals (Chapter 2). The signal strength of the USA station partially reflects the low take-off angle of the saltwater verticals (5º), and is partly attributable to “focusing gain” during chordal-hop propagation (Chapter 1). The relative weakness of European stations illustrates exclusive access to chordal-hop propagation via antipodal “space-time” portals afforded the USA and Tasmanian stations, but not to the Europeans (Chapter 1).
Enticing are the Tasmanian song birds heard in the background singing that midsummer afternoon on January 31, 2019.
Tasmania Eavesdroping Long Path