Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes Wireless System Designer RF Stencils for Visio Shapes for Word Search RF Cafe Sitemap Advertising Facebook RF Cafe Forums Thank you for visiting RF Cafe!

Very Short FM Antennas - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


maxwell
 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


 
   
 
Fred
 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. :(


 
  
 
maxwell
 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.






Posted  11/12/2012

RF Cafe Software

   Wireless System Designer - RF Cafe
Wireless System Designer

RF & EE Symbols Word
RF Stencils for Visio
Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ for Excel

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:
 AirplanesAndRockets.com

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !

height-line