[TowerTalk] Beverage Antenna

[Patrick Greenlee]

Is there a link to be shared for the Canadian document?


Patrick   NJ5g




On 2/2/2015 3:34 PM, Don wrote:
> Don't jump on me Jim, I have a pile of information I've accumulated 
> and read about Beverages (but didn't have KITTT's Canadian government 
> study, thanks Dave).
>
> Up to now (not having read the Canadian document fully yet), I 
> couldn't/didn't find a published scientific study where variables such 
> as height and length for low HF Beverages were conducted under a set 
> of standard conditions (maybe it is in the report Dave passed along - 
> which will take some reading).
>
> You are also quite correct that I have not looked in every technical 
> journal, there are so many not on line or that I don't have access to. 
> I also don't have the ON4UN book (sounds like a good purchase to make) 
> and my ARRL Antenna Manual is dated and its coverage of Beverages 
> still didn't answer my questions.
>
> I'm impressed you have 'done that study, or done that modeling, or 
> built those antennas . . . ' I also have built a heck of a lot of 
> antennas in the 60 years I've been hamming. BUT, I have never built or 
> used a Beverage nor had a 'real' 160M setup which I'd like to rectify 
> in the dwindling years left.
>
> I've learned a lot from the discussions here on the subject, one being 
> that there is often a difference of opinion on many of the issues that 
> have been posted, which is quite helpful, allowing one to see more 
> sides to an issue. I thank all of those who have put forth their 
> experiences and thoughts and beliefs.
>
> And Jim, while I didn't ask about the use of Beverage's on bands other 
> than 160 M, thanks for the comments. And I understand VE7RF's comments.
>
> I am concerned that, since I have never used a Beverage, built a 
> Beverage, and only recently began pulling together articles and 
> reports about them before reading the recent posts on Towertalk, that 
> you feel I shouldn't ask questions unless I am fully versed in the 
> topic. The reason for the questions is I am NOT fully versed. I don't 
> know a better way to learn than ask questions. but apparently you feel 
> otherwise.
>
> I apologize to you for apparently wasting your time and shall just 
> become a passive reader.
>
> Don W7WLL
>
>
>
> -----Original Message----- From: Jim Brown
> Sent: Monday, February 02, 2015 11:14 AM
> To: towertalk at contesting.com
> Subject: Re: [TowerTalk] Beverage Antenna
>
> On Mon,2/2/2015 10:05 AM, Don wrote:
>> First, I'm surprised there does not seem to be any published 
>> measurements taken at a common test site of a Beverage at various 
>> heights and lengths (such as done with yagi's, and other antennas on 
>> test ranges).
>
> Why do you assume that nothing like this exists? Beverages have been
> around for nearly a century, and it is quite likely that there's a lot
> of published work that you haven't looked for in scientific journals.
> It's also possible to model antennas like this and do your own study.
> There's a lot about Beverages (and other RX antennas) in the ON4UN book,
> and in the ARRL Antenna Book.
>
> Email reflectors like this one should not be a substitute for pulling
> out the books and studying them. Many of us who post answers to
> questions like this have done that study, or done that modeling, or
> built those antennas, and are sharing what we've learned. As VE7RF has
> noted, optimum height is a function of wavelength. When a Beverage is
> higher than that, it doesn't stop working, like throwing a switch, it
> just becomes less effective. My 550 ft Beverages, a full wavelength on
> 160M, at an average height of 5-6 ft, are quite effective on 40M, and
> are still working on 20M! How do I know? I run diversity with my K3
> using the TX dipole at 125 ft into the main RX and the Beverage into the
> second RX.
>
> 73, Jim K9YC
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