[TowerTalk] Fwd: Dbi vs DBd

[K7LXC at aol.com]

In a message dated 11/3/2009 12:02:11 P.M. Pacific Standard Time,  
towertalk-request at contesting.com writes:

>  Both were used. Many times a manufacturer used the dBi  without telling 
as the numbers looked better. To make figures looking even  better the 
numbers were also many times "padded".

>  I,  many times, saw figures that just didn't make sense such as a dipole 
with  some extra coils on stating "8 dB gain". :-)

>  I would take  any information about antenna gain from the 50-s with a 
grain of  salt.


        And the 60's, 70's, 80's,  etc. into the 21st century. Our antenna 
comparison reports used on-the-air  comparisons to a dipole for *real* 
results. Force 12 and SteppIR are 2  manufacturers that use our protocol in their 
published gain figures so they are  relatively comparable to our test 
results. The rest are in the YMMV category. 
 
Cheers,
Steve    K7LXC
_www.championradio.com_ (http://www.championradio.com)