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Very Short FM Antennas - 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: Very Short FM Antennas
Posted: Tue Nov 29, 2005 10:12 am 
 
Captain
User avatar

Joined: Mon Sep 01, 2003 6:59 pm
Posts: 13
Location: Boston
Hi folks.

I'm looking for information about very short FM radio antennas. My application is a commercial product that is wearable by the user, or that can maybe be embedded in a portable device that will not require the wires from a plug-in headset to act as the antenna. Any ideas? I've searched through a lot of stuff on the web and can't find anything useful.

Your thoughts would be appreciated.


Thanks - Maxwell


 
   
 
 Post subject: Short FM Antennas
Posted: Tue Nov 29, 2005 12:36 pm 
Hey Max, I don't think you're going to find anything really useful. If you take a look at what has been around for decades, the long wires work best. The quality of the antenna seems to far outweight the quality of the receiver for most case. I have a car with a $350 FM tuner that can't pull in stations my PoS Escort will with the factory radio. In fact, my Escort can get both AM and FM stations that none of my other cars or my home stereo can get (home stereo only uses 300-ohm dipole).

The headphone wires that constitute the FM antenna for iPods, Walkmans, etc., are really lousy, as anyone who has tried to use one can tell you. Forget about picking up a station in a metal/concrete building. The little stubby whip antennas built into headset with receiver built in are crappy too.

Sorry to be the bearer of bad news, but I don't think you can get there from here. :(


 
  
 
 Post subject:
Posted: Fri Dec 02, 2005 5:07 pm 
 
Captain
User avatar

Joined: Mon Sep 01, 2003 6:59 pm
Posts: 13
Location: Boston
Thanks Fred. That's pretty much what I thought, but I know that somewhere I have read about people doing research into very effective short antennas.

If anyone else knows of anything, please let me know.






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