[Milsurplus] PRC-74 & NVIS

[Military1944 at aol.com]

In a message dated 14/06/2008 01:05:04 GMT Daylight Time, WA5CAB at cs.com  
writes:

Theses antennas are essentially low-to-the-ground horizontal dipoles that  
exhibit high take-off angles for low-band HF signals.  The high T.O.  angles of 
NVIS antennas permits signals of up about 12 MHz to be returned to  earth 
within 300-500 miles of the transmitter (between ground wave and first  e-layer 
skip range) with very little attenuation.



-----------------------------
 
What happens if you are using a NVIS aerial but the other guy is running a  
long wire, high dipole, vertical etc etc. 
 
Your signal might be going straight up and down hence he gets good copy of  
you but if his signal is low angle your not going to hear him too well. 
 
Don't both ends of the path need to be using NVIS aerials? 
 
Ben G4BXD



   
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