Diectional Antennas - RF Cafe Forums

RF Cafe Forums closed its virtual doors in late 2012 mainly due to other social media platforms dominating public commenting venues. RF Cafe Forums began sometime around August of 2003 and was quite well-attended for many years. By 2012, Facebook and Twitter were overwhelmingly dominating online personal interaction, and RF Cafe Forums activity dropped off precipitously. Regardless, there are still lots of great posts in the archive that ware worth looking at. Below are the old forum threads, including responses to the original posts. Here is the full original RF Cafe Forums on Archive.org

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mjwebster99
 Post subject: Diectional Antennas
Posted: Sun Oct 16, 2005 4:58 am 
Hi

Im relatively inexpirienced with electronics and radio, however I'm currently undertaking a related project and would like to know if anyone tell me if a highly directional antenna exists that could receive at UHF 868 MHz that would be sturdy / small enough to be mounted on top of a car?

Many Thanks

mjwebster99


 
  
 
sag
 Post subject:
Posted: Fri Oct 21, 2005 10:27 am 
Hay,

how much GAIN do you want? thare are small magnetic monopoles that can give you about 5dBi (if you put them an the middle of the car roof),

there are also small patch antennas that have a gain of 7dBi-10dBi which can be mounted on the car. you should look at the catalogs of KATHRIEN, CUSHCRAFT.

Sag

Posted  11/12/2012