[Lowfer] Active whip antennas

[ToddRoberts2001 at aol.com]

In a message dated 12/19/2010 11:53:38 A.M. Eastern Standard Time,  
w1tag at w1tag.com writes:

Here's a conversation starter:

What's the difference between a whip  2' long attached to a preamp that's 
48' in the air, and a 50' wire attached  to the same preamp on the ground?

John, W1TAG
 
 
Answer - a heck of a lot of difference depending on what the input of the 
preamp is designed for. If the preamp is designed for a short 2 or 3 ft  
long
whip, then the preamp will totally overload if you connect the same  preamp
to a 48 ft long wire.
 
Overall noise pickup should be less on an isolated active whip that is 48ft 
 in the air 
compared to the noise pickup on a 50' wire that goes right down to ground  
level. That 
is one of the advantages of a small active whip.
 
73 - Todd WD4NGG