[TowerTalk] FW: Help 80m 4 square

[Joe Subich, W8IK]

> 
> Is it permissable to have both elevated and ground radials?  
> 

ON4UN uses a single elevated radial on 80 over his extensive 
non-resonant 160 meter radial system. 

> Should the coax shield be left "floating" to the radials or 
> grounded?  

Mose elevated radial systems seem to work better with a "choke 
'balun'" to reduce ground currents on the shield. 

> Does it help to tune the radials with a meter such as an autek 
> or doesnt it matter.  

It depends on what purpose the radials serve.  Elevated radials 
become part of the radiating antenna (see ON4UN page 11-55) and 
generally need to be tuned. 

> On short elevated radials does it help to load them with a
> coil?

Elevated radials should be resonant.  They effect the resonant 
frequency and bandwidth of the system. 

73,
   ... Joe Subich, W8IK/4  ex-AD8I
       <W8IK@IBM.NET>
 

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