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Helical Antenna or Whip or What? - RF Cafe Forums

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 Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

 Post subject: Helical Antenna or Whip or What?
Posted: Fri Jun 25, 2004 9:22 am 
Hi, Please can somebody advise me on what antenna I must use. We have design a prepaid system in South-Africa that need to be link via RF. Now I have done many RF designs before but never did I need to decided what antenna will work the best.

The antenna will be mounted horisontal and will be directly mounted on the pcb and the system will be one meter above ground. The collector station will 3 meters above ground.

Can anybody please help.



 Post subject:
Posted: Wed Jul 07, 2004 1:50 pm 
Unfortunately, there's not nearly enough information in your post to decide. What frequency? What is the distance to the receiver/repeater? How much power is being transmitted and received? How much space do you have for an antenna? Plus, a host of other less important considerations....

Posted  11/12/2012

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