Tuesday, January 15, 2019

2 Meter VHF Quarter Wave Ground Plane Antenna - Ham Radio Q&A. Post 1744.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Vxft-rYHGDw

Are you looking for an easy, fun, and simple antenna project.  Then, this 2 Meter 1/4 Wave Ground Plane Antenna from Michael Martens (KB9VBR) is what you need.  The antenna design uses a SO-239 connector, some stiff wire, a few nuts and screws, and a convenient length of PVC pipe.  The radiating element is connected to the center pin of a coaxial feed line (50 ohm--RG-8, RG-8X, or even RG-58), with the radial wires attached to the coax shield.  The simple ground plane antenna makes a great portable or emergency antenna.  Make one today for your "go-kit".

For the latest Amateur/Ham Radio news and information, please visit these web sites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, January 14, 2019

2 Meter 3 Element Tape Measure Yagi Antenna. Post 1743.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=rxZ4rro2aKo

If you want a simple, cheap, effective, and fun-to-build 3 element yagi for the 2 meter band, then this video from Darin Boehrnsen (KF7TOV) is for you.

This homebrew 2 meter antenna uses materials easily bought from the nearest hardware or home improvement outlet, including some steel tape measures, a few pieces of PVC pipe, plastic pieces, and nuts, bolts, and screws from your junk box.  These antennas are great for portable and emergency use as well as for RDF (radio direction finding) contests and events.  Make one of these antennas for your emergency "go kit" and store it in your vehicle.  An excellent club project!

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon)
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, January 13, 2019

2 element wire yagi for 28 MHz. Post 1742.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=8bS1QBH8VwQ&index=23&t=74s&list=PLj8-NKcZtRf6vQ-s5qvvrRjumICN_GRpH.

Here's another great antenna video from Australian radio amateur, Peter Parker (VK3YE).  In this video, Peter shows us how to build a simple, inexpensive 2-element wire yagi for 10 meters.  This project can be made in just a few hours using locally available materials from your neighborhood home improvement or hardware store.  This uncomplicated wire beam can be used at home or in the field.  Be ready when those unexpected 10 meter openings happen.

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.infor.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, January 12, 2019

Near Vertical Incidence Skywave Propagation NVIS Antenna. Post 1741.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=fvZ7z-6wAy0

Michael Martens (KB9VBR) offers an excellent, easy-to-understand video on the design, construction, and use of NVIS (Near Vertical Incidence Skywave) antennas.  These antennas offer effective HF range out to a distance of between 100 and 300 miles (162 to 486 km).  A NVIS antenna is a good choice for local and regional EMCOMM and portable use. 

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
http://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, January 11, 2019

The half square wire antenna on 10 MHz (and more). Post 1740.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=v4x5inJcajw

Australian ham Peter Parker (VK3YE) shows some of the capabilities of his homebrew "Half Square Antenna" for 10 MHz and above.  A half square antenna is a wire antenna with two vertical radiators fed in phase.  One vertical element (1/4 wave length) is fed at the top where it's attached to a SO-239 connector. The other side of the SO-239 is attached to a horizontal half wave phasing line, then connected to another vertical element (1/4 wave length) aiming at the ground. 

Thanks to some help from a nearby Australian beach, Peter was able to make contact with EA8YT/M on 10 MHz, another station on 14 MHz, and finally an EA station on 7 MHz.  As Peter suggests, you can set up your half square antenna with the help of two telescoping fiberglass fishing rods (squid poles)

For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
http://www.southgatearc.org.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).