[TowerTalk] What relay do Ameritron and Array Solutions
    Jim Lux 
    jimlux at earthlink.net
       
    Sat May 19 10:17:35 EDT 2007
    
    
  
At 08:18 PM 5/15/2007, jeremy-ca wrote:
>>The VNA might take the guesswork out of some of the measurements, but
>>doesn't tell you much about how to change the design to make it
>>"better".  And for using "non-RF" components in RF applications
>>(which is what most amateur market relay boxes are.. they are NOT
>>clever stripline designs like DowKey uses) there's an awful lot of
>>craft and art to the design, probably moreso than straightforward RF
>>circuit design.  (Unless someone's been out building HFSS models for relays).
>
>
>The VNA is simply a tool. As with any tool it requires that the user have an
>understanding of its abilities as well as his own.
>
>The DowKey is not a stripline design, it is a coaxial line section; 
>big difference.
Not the one I have sitting on my desk.  It's a SP6T and it's got six 
little striplines that are moved by solenoids.  I also have a 
microwave transfer switch, and it's got 4 little striplines that move
I suspect there's lots of different designs they use. 
    
    
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