FM antennae
 

Never mind guys...I didn't search well enough initially and have now found what I need

Neverminding....

I coulda helped. ;)

What did you end up getting, I am looking also.

llantas

I'm trying a 57 inch (half wave length) length of insulated copper wire at a right angle to the transmission. So far so good.

hmmm....please tell more about this....

I read that 57 inches is one half of the FM wavelength. Placing it at a right angle to the transmission source apparently maximizes exposure to the wave. And insulated copper ...well its great at conducting most anything I guess. Thats all I know.

I've long used copper wire for FM antennae, but i never heard the 57" part before. I'll have to give that a try.

flatbutt, what FM frequency are you trying to pull in? 57.3" is common for trying to get typical FM stations from 88-108 MHz. If you are trying for a dipole, you should have two equal lengths of wire. I built one for the Bose radio in my mom's kitchen. I actually used coat hangers. The dipole is omni directional, but works best as you described. I also built a 900 MHz ground plane antenna that is directional, but boosts the gain tremendously.

Hey dave can ya send me some sort of diagram/blueprint?

As far as Porche radios go...forget it. Like a friend once told me: "I've never had a Porsche with a good radio". This drives the restoration folks nutzo with the early 911...so many factory radios were simply tossed...

Dipole is like the antennas that come with stereo recievers...T shaped...
http://en.wikipedia.org/wiki/Dipole_antenna

Ah, ok. Where i live the T shaped contraptions don't work well at all.

Put 'em high enough, and point 'em in the right direction, and they will...depends on how serious you are about the reception. An ex Navy Chief in charge of shipboard electronics one told me with the right antennae, he could make a $6.99 transistor radio receive amazingly well.

That's why you go the directional route.

http://forums.pelicanparts.com/uploa...1248931379.jpg

http://forums.pelicanparts.com/uploa...1248931429.jpg

You can also go the Yagi route as well.

http://en.wikipedia.org/wiki/Yagi_antenna

Thanks dave!

Those plates are joined by wood blocks right?

Yes. Anything that is non-conductive works. The plates and the wood blocks are cut to specific dimensions though. The lower the frequency, the bigger the plates. Oh, CA glue (super glue) does not bond very well. Use epoxy.

Here's the link I used to create my copper masterpiece... :)
http://www.rc-cam.com/gp_patch.htm

You continue to be the man dude.

Dunno why I noticed this; there are two distinctly different "Flatbutts" in this thread.

Flatbutt1
Registered User

..and...

flatbutt
I see you

What's up with that, dude?