Friday, 3:30 PM to 4:30PM
Near Vertical Incident Skywave (NVIS) Antenna for EmComm
Presenter: Gary Spangneberg, KF4GGK
As a member of the Pickens County Communications Group ( wx4pg.org ) Gary developed a presentation that uses WSPR and VSWR measurements to demonstrate the performance of an NVIS double bazooka antenna on a single support ten feet above ground.
Topics to include: What is most effective for communicating in mountainous terrain? What is the F-Layer? What is the best dipole antenna configuration that does not need a tuner, and has negligible impedance variation with altitude? Implementation of a 40m NVIS antenna. Coverage radius as a function of inverted V angle using a WSPR Beacon. Impedance variation as a function of the inverted V angle.
