[Antennas] re: FM stereo antenna

Fri Dec 30 01:21:45 EST 2005

Yeah, Bob, a folded dipole out of twin lead may be easier though the twin
lead needs to be insulated from a metal support whereas coax will not have
that issue.
Personally for FM stereo reception, Radio Shack or most radio dealers
probably have a FM turnstile for omni coverage and that's easier than
building one ;)
Chris
WB5ITT
SBE Member and BC engineer...but not as long as you ;)
> -----Original Message-----
> From: Robert Lay (W9DMK) [mailto:w9dmk at crosslink.net] 
> Sent: Friday, December 30, 2005 12:09 AM
> To: Chris Boone; antennas at mailman.qth.net
> Subject: Re: [Antennas] re: FM stereo antenna
>> Chris Boone's proposed dipole is probably fine - I've never 
> tried one that way.
>> I have always built my FM dipoles using 300 ohm twinlead for 
> both the dipole itself and the feedline. The dipole portion 
> actually becomes a "folded dipole". Theoretically, you get a 
> better match for a 300 ohm receiver.
>> Use the same dimension for the dipole portion as Chris gave 
> and connect the two wires at an end together. Pick either one 
> of the two wires of the dipole and solder in your twinlead to 
> the center of that leg.
>> Has the advantage of being more broad band. I've use those 
> for FM antennas ever since I began my career as an FM 
> broadcast engineer in 1948 at WCSI-FM
> 93.7 MC in Columbus, Indiana.
>> Enjoy!
>> 73 de W9DMK - Bob Lay, Dahlgren, VA
> http://zaffra.f2o.org/W9DMK/W9dmk.html
> w9dmk at crosslink.net 
>