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Thread: Plans for a 20 Meter Mono-Band Beam?

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  1. #1
    Join Date
    Jun 2004
    Location
    Wheaton, IL
    Posts
    116

    Default Plans for a 20 Meter Mono-Band Beam?

    Anyone have a link to a plan for a 20 meter mono-bander? I would like to build one and my google searches haven't turned up what i'm looking for.

    Thanks

  2. #2
    Join Date
    Jul 2006
    Location
    Alberta,Canada
    Posts
    1,373

    Default

    http://uts.cc.utexas.edu/~hansongr/Miniyagi.htm


    its a two element 20m yagi...
    Dont know how big your lookin

    But DXzone.com has some great antenna plans
    And you can select lists by the band
    "Im a confederate, I!! FLY!! THE!!! CONFEDERATE!!! FLAG!!!!, But my damn wife is a yankee go ahead.."

    Recently heard on 20m

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  3. #3
    Join Date
    May 2005
    Location
    Virginia
    Posts
    1,028

    Default

    You should elaborate a bit more about what exactly you are looking for.

    Are you interested in some kind of mini-beam or some kind of elephant gun?

    Anyway there is a lot of information on LB cebiks W4RNL (SK) site:

    http://cebik.com/

    you have to register but it is a treasure trove...

    73,
    Harry WB3BEL

  4. #4
    Join Date
    Apr 2001
    Location
    Wantage, NJ, USA FN21qf
    Posts
    18,554

    Default

    The ARRL antenna book has plans for optimized mono band yagis.

  5. #5

    Default

    A Three Element Lightweight Monobander for 14 MHz

    Article: http://www.arrl.org/members-only/tis...df/0107028.pdf (178,829 bytes)

    This article can be downloaded by registered ARRL members.

  6. #6

    Default

    Anyone have a link to a plan for a 20 meter mono-bander? I would like to build one ...
    Kevin -

    There are several sources for DIY designs and tools for mono-band HF yagi antennas.
    The ARRL Antenna Handbook (or ARRL Handbook) is a good book source, that should be available at the Wheaton library.

    The ARRL web site is a good source for Antenna Project articles and Internet links.
    http://www.arrl.org/tis/info/antproj.html
    http://www.arrl.org/tis/info/yagi-hf.html

    ARRL also has a good tutorial on antenna modeling that was written by L.B. Cebik, W4RNL (recent SK) :-(
    http://www.arrl.org/tis/info/HTML/an...ing/index.html

    EZNEC is a modeling tool that you can also use.
    http://www.eznec.com/

    Another source is actually looking at the assembly and installation instructions for commerical yagi antennas,
    such as the Cushcraft 20-meter Skywalker 4 element mono-band yagi:
    http://www.cushcraft.com/support/pdf/951354.pdf

    Aluminum tubing and stainless steel fasteners are the key materials for construction
    (but you can substitute with other RF conductive and weatherproof materials).
    You are fortunate that your QTH is within a few miles of Penninger Radio with their large stock of aluminum masts, tubing and accessories.
    Penninger also recently purchased a wire and cable supplier.
    http://www.penningerradio.com/

    Other parts sources in the western Chicago suburbs are:

    WestMarine (Lombard) for stainless steel, rope and some fixtures
    Ace Hardware (Addison store very good) larger operations have aluminum tubing in a variety of sizes
    (industrial sizes as well as Reynolds DIY in screen door departments).

    DX Engineering (Ohio) and Texas Towers (Plano, TX) are 2 very good sources for antenna building supplies (tubing, etc.)
    http://www.dxengineering.com/
    http://www.texastowers.com/aluminum.htm

    Never forget that the restoration of an older weathered HF tri-band yagi can often be a cheaper entrance --
    the amount of work is more focused on restoration of the mfg. design.

    w9gb
    Last edited by W9GB; 06-28-2008 at 02:38 AM.

  7. #7

    Default

    The Beam Antenna Handbook by Bill Orr, W6SAI, has some very good designs for yagi antennas. His 3-element 20 meter design on a 20 foot boom is an excellent performing antenna. I have had one of these in the air for well over 30 years and it is still working great.

    Glen, K9STH

  8. #8
    Join Date
    Jun 2004
    Location
    Wheaton, IL
    Posts
    116

    Default

    Thanks everyone for the suggestions. I hadn't really settled in on more specific design criteria, other then to say it didn't need to be portable. This would go on a tripod (hopefully) on my roof. It would also be preferrable if the required materials were readily accessible.

    Having just gotten into HF and digitial modes, I've found 20 Meters to be a blast. An antenna with some gain and directionality over my G5RV is what I'm seeking.

    By the way, I did look extensively at the links on DXZone. For this topic many of them appeared to be dead links.

    Thanks for all the help.

  9. #9

    Default

    Kevin -

    What are you doing this weekend?

    The York Radio Club has their Field Day operational setup Saturday morning -- we will have a
    variety of antennas (TH3JR yagi, R-5 vertical, etc.) and my old Novice W2AU 80/40 trap dipole antenna (still works well).
    We might have some openings for some late Saturday night / Sunday morning operational shifts !

    w9gb
    Last edited by W9GB; 06-28-2008 at 02:36 AM.

  10. #10
    Join Date
    Jan 2000
    Location
    Charleston, SC
    Posts
    926

    Default

    W9GB, thanks for the links and the work involved in posting them.
    Life is not a journey to the grave with the intention to arrive safely in a well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and proclaiming "Wow, what a ride!!!"
    [url]www.wy6k.com[/url]

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