[TowerTalk] Cage dipole revisited.

[Roger (K8RI)]

K1TTT wrote:
>>> Any dipole mounted somewhere above a good ground, could have some gain
>>>       
>> in
>>     
>>> some directions ... compared to a dipole in free space ... and so it
>>>       
>> would
>>     
>> exhibit a positive dBd number.  And many do.  There is no snake oil in
>> that.
>>
>>
>>  Really?
>>
>> Do you know of a product that would allow me to mount my comparison dipole
>> in free space for tests?
>>     

And where can I find the isotropic radiator to run a comparison against<:-))

73

Roger (K8RI)
>> To use dBd to refer specifically to a dipole in free space is misleading
>> marketing BS.
>>     
>
> But this is MARKETING, they thrive on things like that.  No one says you
> have to be able to measure it, or that it could even be compared to anything
> buildable on earth.  Manufacturers have quoted gain against isotropic to get
> those couple extra db in the past, can you build a real isotropic radiator?
> Caveat Emptor, ab asino lanam, corruptio optimi pess, bonitas non est
> pessimis esse meliorem, adversus solem ne loquitor, etc, etc, etc... 
>
>
> David Robbins K1TTT
> e-mail: mailto:k1ttt at arrl.net
> web: http://www.k1ttt.net
> AR-Cluster node: 145.69MHz or telnet://dxc.k1ttt.net
>  
>
>
>
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