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Old 06-18-2017, 07:59 PM   #10 (permalink)
California98Civic
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Join Date: Mar 2011
Location: Coastal Southern California
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Black and Green - '98 Honda Civic DX Coupe
Team Honda
90 day: 66.42 mpg (US)

Black and Red - '00 Nashbar Custom built eBike
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Quote:
Originally Posted by freebeard View Post
According to this an FM dipole antenna would be ~38" tuned to the middle of the FM band, but you can calculate a length for a specific frequency. I believe the dipole needs to be at 90° to the direction of the station.
Cool site. It suggests approximately a meter, give or take depending on the station you are interested in. A meter is a pretty long minimum length for a straight section of wire parallel to the ground, high-up, and outside... on a passenger car. Is there any way to make it more compact? I am guessing no. So what we really need is an angled and long adjustable length mast antenna, right?

Maybe like this?

https://www.walmart.com/ip/4-Pcs-7-S...&wl13=&veh=sem

EDIT: Actually, I just measured and there is 43-47 inches, minimum 110cm space along my Civic's roofline, exiting from the former antenna mast mounting point. I could theoretically create an antenna that is flush against the exterior of the body.
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.




Last edited by California98Civic; 06-18-2017 at 08:10 PM..
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