[VHFcontesting] 432 MHz omnidirectional and Yagi on same rover vehicle?

[James Duffey]

Can anyone share their experiences with mounting and using both an  
omnidirectional and Yagi antenna on a rover at the same time. How far  
apart do they need to be to prevent interaction?

I am thinking of roving in the UHF contest next month. With sparse  
activity here, I should probably operate in motion so I won't miss  
anyone. To this end, I am thinking of using both a omnidirectional  
antenna, say stacked Big Wheels, and a Yagi, probably the 11 element  
432 MHz WA5VJB Yagi. I would like to have these on the car at the same  
time.

I am thinking of putting the Yagi 2 to 3 feet below the bottom wheel  
of the stacked wheels. The top wheel will be about 11 ft above the  
ground. When stopped the The vehicle is a Subaru Outback Wagon.

I will model this, but I would like input from someone who has  
practical experience with an arrangement similar to this. Thanks -  
Duffey


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KK6MC
James Duffey
Cedar Crest NM