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[aprssig] APRS buoy - transmit power and antenna?

Ray Wells vk2tv at exemail.com.au
Wed Sep 12 02:23:16 UTC 2007


Robert Bruninga wrote:

>>I'd opt for maximum antenna efficiency and use a 
>>suitably matched halfwave whip.  These are sold 
>>as a ground plane independant antenna or GPI.
>>    
>>
>
>Yep, that is what a J-pole is.
>  
>

The difference between a commercial GPI that uses a compact LC network 
for matching, and a J-pole is that the former doesn't have a (possibly) 
radiating matching section like the latter has.

Ray vk2tv




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