Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would
be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate
that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views.
It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if
you would like to post something on RF Cafe's
page, please do.
Below are all of the forum threads, including all
the responses to the original posts.
Post subject: Diectional Antennas
Posted: Sun Oct 16, 2005 4:58 am
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?
Posted: Fri Oct 21, 2005 10:27 am
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.