Build a microwave antenna from household parts

This homebrew 1.2 GHz microwave antenna is built from a 6" household air duct and picks up a signal from an Icom R3 amateur TV repeater. The device then retransmits the signal over a longer distance. Not a lot about the construction of this giant "flashlight looking" device, but we still like the hacked efficiency of this design.

Amateur TV Receiver

(Update: The photographer asked us to remove the photo, but you can still see at the link above - pt).


Recent Entries

Comments

Oldest comments listed first.

Posted by: Goose22 on June 26, 2008 at 8:09 AM

Correction

Interesting post, but slightly inaccurate: The ICOM R3 is in fact a receiver, not a repeater. It's the little box with the screen attached to the antenna. It can pick up AM (broadcast) and FM (1.2Ghz or 2.4Ghz) video signals, as well as AM and FM audio on a very wide frequency range.


Posted by: Keith DeLong on June 27, 2008 at 8:48 PM

Original Text

When Goose22 summarized the description that went with my photo, there was a slight misinterpretation. Here is the original text:

This is a 1.2 GHz microwave antenna made from regular 6" household air duct. It picks up a signal from our new Amateur TV repeater. (The repeater will take a TV signal from anywhere in the local county, and retransmits it to everywhere in the local county.) The antenna looks like a giant flashlight.

WiFi wireless network users build something similar to this (but much smaller) called a cantenna (tin can antenna)

--Keith (N8XD)


Leave a comment


Subscribe to MAKE!Subscribe to MAKE Magazine!

Subscribe today, save 42% and get web access to MAKE free. MAKE Digital Edition is available only to subscribers.

$34.95 / 1 year
(4 Quarterly Issues)

Subscribe now


Void your warranty, violate a user agreement, fry a circuit, blow a fuse, poke an eye out. Make: The risk-takers, the doers, the makers of things... Welcome to Make: Online!


CRAFT Maker Shed Maker Faire MAKE television
MAKE: en EspaƱol MAKE: Japan


Check out all of the episodes of Make: television

Make: Science Room

Connect with MAKE

Be a MAKE fan on Facebook MAKE on Facebook
Visit our Facebook page and become a fan of MAKE!
MAKE on Twitter MAKE on Twitter
Follow our MAKE tweets!
MAKE Flickr Pool MAKE on Flickr
Join our MAKE Flickr Pool!
    make_tips on Twitter

    MAKE's RSS feed is here.
    Add MAKE to iGoogle - GoogleGoogle.
    How to add MAKE to your RSS reader - Real simple.
    Add MAKE on FriendFeed




    Maker SHED

    Advertise here with FM.

    Why advertise on MAKE?
    Read what folks are saying about us!

    Click here to advertise on MAKE!



    Subscribe to MAKE Magazine!

    Make: Online authors!

    Gareth BranwynGareth Branwyn
    Senior Editor


    Phillip TorronePhillip Torrone
    Senior Editor
    | AIM | Twitter


    Becky SternBecky Stern
    Associate Editor
    | AIM | Twitter


    Marc de VinckMarc de Vinck
    Contributing Writer
    | AIM | Twitter


    John ParkJohn Park
    Contributing Writer
    | Twitter


    Sean RaganSean Ragan
    Contributing Writer
    | Twitter


    Matt MetsMatt Mets
    Contributing Writer
    | AIM | Twitter


    Dale DoughertyDale Dougherty
    Editor & Publisher
    | Twitter


    Shawn ConnallyShawn Connally
    Managing Editor
    | Twitter


    Goli MohammadiGoli Mohammadi
    Associate Managing Editor

    Kip KayKip Kay
    Weekend Projects
    | AIM | Twitter


    Collin CunninghamCollin Cunningham
    Contributing Writer
    | AIM | Twitter

    Adam FlahertyAdam Flaherty
    Contributing Writer
    | AIM | Twitter



    More contributors: Mark Frauenfelder (Editor-in-Chief, MAKE magazine), Kipp Bradford (Technical Consultant/Writer), Chris Connors (Education), Diana Eng (Guest Author), Peter Horvath (Intern), Brian Jepson (O'Reilly Media), Robert Bruce Thompson (Science Room)

    Suggest a Site!

    Current Podcast

    itunesdl.gif Weekend Project: Making Char Cloth Learn how to make a cheap and effective fire starter made from an old t-shirt. To download The Char Cloth video click here and subscribe in iTunes. See Char Cloth in action with the Fire Piston from William Gurstelle.... More...

    Get the Make: Online sent via email
    Enter your email to receive Make: Online each day:



    MAKE Fascination video series brought to you by Dow

    Make: Education

    Important please read


    Subscribe to MAKE Magazine!

    Recent Posts from the Craft: Blog