Maximizing Efficiency in HF Mobile Antennas - Articles Forum at eHam.net

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Maximizing Efficiency in HF Mobile Antennas	Reply
by WW5AA on October 2, 2009	Mail this to a friend!
Great information as usual Alan. I'm waiting for the guy that mag mounted his ham stick to come in and tell us that all this stuff is not necessary. He can work anyone he hears (:-) 73 de Lindy

RE: Maximizing Efficiency in HF Mobile Antennas	Reply
by N2RRA on October 2, 2009	Mail this to a friend!
Alan, Once again you've done it. In fact between Cebik and you I've modeled my mobile after you guys. Any chance I get I always refer your site to others who strive for the best mobile signal especially when it comes to hybrids. Thanks for another great article! 73, Eric

RE: Maximizing Efficiency in HF Mobile Antennas	Reply
by KG4RUL on October 2, 2009	Mail this to a friend!
Well, not quite what Lindy wanted to hear but, I mag mounted my Lil Tarheel II with a DX Engineering Cap hat and I can work any station I can hear. :)

RE: Maximizing Efficiency in HF Mobile Antennas	Reply
by KI4SDY on October 2, 2009	Mail this to a friend!
How could you work a station that you couldn't hear? A very interesting antenna design, but the hub looks challenging to machine for those who don't have the expertise and metal working equipment. Maybe this is an opportunity for a new antenna company to spring up?

RE: Maximizing Efficiency in HF Mobile Antennas	Reply
by AD4U on October 2, 2009	Mail this to a friend!
Have you heard any stations?

RE: Maximizing Efficiency in HF Mobile Antennas	Reply
by WV4L on October 2, 2009	Mail this to a friend!
I took a look at your install pics Alan. I'm curious as to how far back the cap hat bends back at highway speeds?

Maximizing Efficiency in HF Mobile Antennas	Reply
by AC7KZ on October 2, 2009	Mail this to a friend!
Don't use Mag Mounts for hf antennas. Get the guts and cut holes in your car! HI HI HI.

Maximizing Efficiency in HF Mobile Antennas	Reply
by K9CTB on October 2, 2009	Mail this to a friend!
Excellent piece yet again, Alan. At first glance, I thought that hub might be commercially available. Nice job!

Maximizing Efficiency in HF Mobile Antennas	Reply
by WA1RNE on October 2, 2009	Mail this to a friend!
Here's how I minimized ground losses with my HF mobile installation back in the 70's: http://www.dealsonwheels.com/Search/Detail_more.aspx?id=00687652E03&photo=6 At 18.75' in length, my ground plane was longer than required for a full quarter wavelength on 20, with a total surface area of almost 131 sq ft. My Yaesu FT-101B sat in a homebrew wood stand on the passenger side floor. The antenna was a Hustler bumper mount with a choice og Hustler or Waters loading coils, for 75-15 meters. (When bumpers really were bumpers.) Granted propagation was much better than today, but I was able to work DX regularly with this arrangement especially while hill topping - and in close to living room comfort. .... WA1RNE

RE: Maximizing Efficiency in HF Mobile Antennas	Reply
by W4VR on October 2, 2009	Mail this to a friend!
Good suggestions for the guy who is either on the road a lot or is unable to operate from home for one reason or another. Some of your suggestions may also be useful for the ham who can only put up a short vertical at home with no room for elevated or ground radials...apartment or condo dweller for example.

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