#!/usr/bin/perl -T #!/usr/local/bin/perl -T ## --> Minimum Jammer Power, jammin.main.cgi ## --> Green Bay Professional Packet Radio, www.gbppr.org ## This file Copyright 2003 under the GPL ## NO WARRANTY. Please send bug reports / patches / reports. # Setup # select STDOUT; $| = 1; # User stuff # my $pic = "pics/jammin.png"; my $form = "./jammin.cgi"; # Print MIME # print "Content-type:text/html\n\n"; # Draw me a web page # print < Minimum Jammer Power

Minimum Jammer Power

A service of Green Bay Professional Packet Radio ®

[jammin]


Enemy Specifications


Power Output of the Enemy Transmitter (ERP)  
Elevation of the Enemy Transmitter Location (AMSL)  
Enemy Transmitter Location-to-Target Receiver Location Distance  


Friendly Specifications


Elevation of the Jammer Transmitter Location (AMSL)  
Jammer Location-to-Target Receiver Location Distance  
Terrain and Ground Conductivity Factor  

Accurate for frequency modulated (FM) VHF receivers only.

Currently works only for jammer location-to-target receiver distances greater than the enemy transmitter-to-target receiver distance.

Jammer location must have a reasonable line-of-sight propagation path to the target receiver's location with no high hills between the two locations.

ERP  Effective Radiated Power.  Actual power output after taking into account feedline losses and antenna gains.

AMSL  Above Mean Sea Level.  Height referenced above sea level, or zero elevation.

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