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).

Thursday, January 10, 2019

Building a 10 meter J Pole Antenna. Post 1739.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=KWt6eaxSK04

Do you want a simple, effective, low visual impact antenna for your 10 meter operations?  If you do, then this video tutorial by machinist Don Nichols (KV4PH) will guide you in the right direction.  Don presented this program to members of the Vienna Wireless Society Radio Club on 12 August 2016.  The finished project is almost a work of art--a testament to Don's skill as a machinist.

During the lull in the current solar cycle, the 10 meter amateur radio band makes an excellent vehicle for local and regional contacts.  Please encourage your friends with technician class licenses to work some CW or SSB on this band.  Why not organize an informal, local net on 10 meters?  You can use Don's project to make something workable for your 10 meter work. 

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).

Wednesday, January 9, 2019

Moxon Antenna A Great First Beam. Post 1738.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=jUiKZ3EIiIc

HL1ZIX (The Stingy Ham) calls the classic Moxon design the "perfect first beam for the new ham."  In this well-made, evenly paced video, we learn how to make a simple Moxon beam for your home station.  Along the way, we get some fascinating new antenna ideas based on the Moxon principle and see some practical examples of this versatile antenna.  This would make an excellent weekend project for those with limited space and funds.

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).

Tuesday, January 8, 2019

20 Meter Delta Loop Antenna. Post 1737.


. If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Rq-9TAcCnxE

Here's an easy, inexpensive, and versatile antenna from Denis (VE3BF).  The classic delta loop antenna can be used for both home and field use.  The antenna exhibits modest gain and can be vertically polarized by feeding the antenna at the bottom.  To get multiband performance (20 meters through 10 meters), use 450 ohm ladder line, 300 ohm TV twin lead, or homemade 600 ohm twin lead in conjunction with a 4:1 balun and an antenna transmatch (i.e. "tuner").  I've built several variations of this design for 80-10 meter coverage.  Best of all, most of the materials can be found in  your "junk box" or at the nearest building supply or home improvement outlet. Have fun!

For the latest Amateur/Ham Radio news and information, please check 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).

Monday, January 7, 2019

40 Meter Fishing Pole Antenna. Post 1736.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=PXg7ZOAkDyg

Operating your amateur radio equipment in field conditions can be a lot of fun if you have some compact, well designed equipment for your venture outdoors.  It goes without saying that a strong, easy to erect, and portable HF antenna will serve you well in Mother Nature's playground.

In this video, Denis (VE3BF) shows us how some wire, a simple 4:1 balun, and an inexpensive fishing rod can become the basis of a great outdoor antenna.  Denis uses a spirally-wound wire on a readily available Shakespeare telescoping 20 carbon fiber fishing pole from Amazon to form a simple, inexpensive portable antenna for 40 meters and other bands.  When you're done with operating, the fishing pole collapses into an easily carried package which can be stored with the antenna components in your vehicle for the next field or emergency situation. Also, this simple antenna can be used as an easily erected and take down antenna for deed-restricted properties.

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 6, 2019

Perfect HOA friendly antenna, discrete and stealthy Broadband Butterfly ...Post 1735.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Y473hOmif-E

If you live in deed-restricted housing controlled by HOAs and CC&Rs, this antenna from Ron C may be of interest.  Ron calls this discrete and stealthy antenna the "Broadband Butterfly Terminated Dipole (BBTD). 

Ron takes you-step-by-step from design to finished product.  Although this project will take some time to build, the results will be worth it.  As long as neighbors can't see this antenna, you should be able to operate in peace  Also, you can try other in-house antennas, such as magnetic loops, small verticals, and half-wave dipoles spread over your ceilings. 

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://hamradiohawaii.wordpress.com.
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 5, 2019

160 Meter Inverted L Antenna. Post 1734.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=JWZZlpHJKT8

Now that propagation is favoring the lower HF bands (160 meters through 40 meters), it may be a good idea making an antenna for these bands.  Because of the size of 160 meter antennas, you may have to make some uncomfortable comprises to use the "Top Band".  Inverted Vs and L antennas can offer you decent performance at a reasonable cost.

However, if you have a fairly large property with several tall trees,  you can follow Bob Holowenko's inverted L design and have a high performance antenna in a few hours.

Bob's antenna consists of 127 ft/38.71 m of wire with 6 X 127 ft/38.71 m radial wires.  Despite some limitations, Bob calls his homemade inverted L "one of the best performing antennas I've played."

Why not experiment with a variety of designs and configurations?  Antenna experimentation is one of the joys of Amateur/Ham Radio.  Considering the propagation issues of the day, Bob's design may just be the right 160 meter antenna for you.

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).

Friday, January 4, 2019

How to Build a 9:1 UnUn for Ham Radio Antenna. Post 1733.


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

Here's a simple, inexpensive 9:1 balun for end-fed long wire antennas.  These antennas are suitable for both permanent home stations, as well as for field and emergency operations.  "Tinker John" (W5CYF) does an excellent job of describing how to build one of these UnUn baluns for end-fed random length wire antennas.  With a little planning, this useful antenna accessory can be made in only a few hours.

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).

Thursday, January 3, 2019

Windom radio Ham antenna. Post 1732.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=uf31ecwFjjQ.

If you're tired of underperforming multiband HF antennas, why not try a full-sized Windom Antenna?  In this video, New Zealand ham Peter Echer and his 6-year old daughter  use a redesigned Windom Antenna to reach around the world--with his daughter even conversing in Russian!  Peter takes you through the step-by-step process of designing, building, installing, and using this "classic antenna" from ham radio's distant past.  An excellent, well-produced video.

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

http://www.Hawaii ARRL.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).

Wednesday, January 2, 2019

HOA Stealth Backyard Vertical 10m-80m Antenna - MFJ-1979, RadioWavz P-80


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=4W5FFX3movg

Here's a nicely done multiband vertical antenna suitable for radio amateurs living in deed-restricted properties (HOAs/CC&Rs) or  lacking space to erect a full 1/2 wavelength horizontal dipole.  All you need is some creativity, a few spare parts, and a good radial system.

In this video, the antenna consists of a MFJ-1979 (1/4 wave 20-meter telescoping mast) a RadioWavz "Patriot 80: adjustable loading coil, a Hustler mast, and a MFJ-909 capacitive meter.  The key to making this homebrew vertical antenna is using a decent radial system and loss loss coaxial cable feed line.  An antenna transmatch (i.e. "tuner") could also be added to keep SWR losses low.  Such a system could also be employed for portable use during the ARRL Field Day, SOTA expeditions, or just casual operations in a public park.

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).

Magnetic Loop antenna 80-10m. Post 1730.


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

Here's another HF magnetic loop antenna suitable for deed-restricted properties or for portable operations.  This video from Kuba (SP5TOF) should give you some ideas for a small, field portable antenna.

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).

Tuesday, January 1, 2019

Dipole antenna feeding Techniques in Antenna and Wave Propagation by Eng...


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=ORFXg0w7vHA

This is post 1729 in a continuing series of articles on simple ham radio antennas.

In this video from Engineering Funda, we get a comprehensive explanation of "Dipole Antenna Feeding Techniques."  The video tutorial covers four major dipole antenna designs:

The center-fed dipole.
The off-center fed dipole.
The delta matched dipole.
The inverted-L dipole.

This video can serve as a basic antenna review for those preparing for amateur radio license exams.  You may want to keep a copy of this video for your reference library. 

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).