[TowerTalk] Vertical with no radial wires

[Roger (K8RI)]

WA3GIN wrote:
> Hi Folks,
>
> Looking for a commercial 80-10m for a building roof top install.  The building roof is rubber so we're using non-penetrating roof mounts for the base of the vertical. The building owner prefers no wires on the roof top.
>   
The AV640 works well on 40 through 6, but it's not designed for 75/80.  
Some claim to use them on that band but like "half slopers" YMMV 
*greatly*. Even at low power I'd be concerned about the matching network 
voltages on 75.  I don't remember what mine measured, but I do remember 
It's highly reactive and the impedance is way off. OT OH if need be it 
wouldn't take me long to check.  The meter is only about 5' from the end 
of the coax out in the shop.

73


Roger (K8RI)
> Vendor and Model recommendations are welcome. Please reply direct.
>
> 73,
> dave
> wa3gin
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