Tuesday, December 31, 2019

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


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=mfnvqQeDLoQ. This post is number 2100 in a continuing series of simple ham radio antennas.

In this well-made video, "Tinker John" (W5CYF) guides us through the design, construction, and building of a simple 9:1 UnUn for use with long wire antennas. The device is cheap and easy to build--something John calls a "nice one-evening project." The finished project is suitable for both home and portable operations.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, December 30, 2019

Tutorial: How to crimp connectors, strip wire and use heat shrink.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=kjSGCSwNuAg. This is post 2099 in a continuing series on simple ham radio antennas.

Thanks to mjlorton for this excellent, easy-to-understand tutorial on how to crimp connectors, strip wire, and use heat shrink tubing.  You will use most of these skills during you lifetime as a radio amateur, so this video should be retained as a reference document in your Amateur/Ham Radio Library.

Here are some observations from "mjlorton":
"Visit my website for more Tips, Videos, DIY projects and more: http://www.mjlorton.com/ -----------------------------Click "Show more"--------------------------------------- A guide on using the correct tools to crimp connectors, strip wire and apply heat shrink. Please support my content creation by using my Amazon Store: http://astore.amazon.com/m0711-20 Buy these tools and connectors here: http://astore.amazon.com/m0711-20?nod... --------------------- Click "Show more" ------------------------------- My website and forum:- http://www.mjlorton.com Donations and contributions:- http://www.mjlorton.com My techie channel MJLorton - Solar Power and Electronic Measurement Equipment - http://www.youtube.com/MJLorton My Techie Amazon Store: http://astore.amazon.com/m0711-20 My other channel VBlogMag - For almost any topic under the sun! - http://www.youtube.com/VBlogMag My VBlogMag Amazon Store: http://astore.amazon.com/vblogmag-20 ----------------------------------------------------------------------- ================================================= Video sponsor, Pass Ltd - their websites: http://www.tester.co.uk/?cmid=QmhzQjc... - Test Equipment and Test-meter suppliers and http://www.calibrate.co.uk/?cmid=Qmhz... - Calibration and service of test equipment ================================================= Further discussion and link to NASA guide here: http://mjlorton.com/forum/index.php?t... In this video: * Selecting the correct wire gauge (AWG - American Wire Gauge) for the crimp connector. * Using the correct tools to strip the insulation from the wire. * The correct way to insert the wire into the crimp connector * Using the correct crimp tools to crimp the connector * How to apply heat shrink correctly to the wire and crimp connector."
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For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.
http://www.southgatearc.org.
https://www.eham.net.
https:/oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).



Sunday, December 29, 2019

Portable satcom antennas - setup


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=0E8Qo8WA4as. This is post 2098 in a continuing series of simple ham radio antennas.

Radio amateurs involved in SATCOM or UHF experiments, may be interested in this portable SATCOM antenna from GATR Technologies.

The antenna can be air-dropped and set up easily by communications specialists on the ground.  While this antenna and its delivery system have a direct military application, they can be used by a variety of public service, commercial, and amateur/ham radio personnel.

In this video, GATR Technologies explains how the integrated system works:
"GATR is revolutionizing the ultra-portable SATCOM industry with its inflatable communications terminal. Compared to other deployable rigid dishes of comparable size, GATR’s unique shape and designs enable extreme portability, lower cost of ownership, reliability in extreme environments, and ease of set up. For more information check; http://www.bssholland.com/#!en/cat/co...

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Saturday, December 28, 2019

A balanced antenna coupler and multiband tuned feeder dipole


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=KLSqfgvGg8M.  This is post 2097 in a continuing series on simple ham radio antennas.

If you want to make a simple 40 meter dipole antenna capable of covering several HF bands, you will need a balanced feed line and a balanced antenna "tuner".

In this well-organized video, Australian radio amateur Peter Parker (VK3YE) shows us how to make a simple balanced antenna "coupler" in conjunction with a balanced feed line to extend the frequency coverage of a basic 40 meter dipole antenna.

Here are some of Peter's suggestions for this project:

"Not your ordinary 7 MHz dipole. This works on all bands up to 28 MHz. It achieves this with a home made tuned feedline and balanced antenna coupler which is described in the video. The antenna is 20 metres from end to end while the feedline is about 8m long (neither critical). I only had room for 5 switches so omitted the 0.1 uH and 6.4 uH coils that VU2ESE used. Not having the latter may mean the coupler doesn't match all antennas on 3.5 MHz. I rarely operate there while portable so this doesn't matter. The source for the coupler circuit was VU2ESE's website at: http://hfsignals.blogspot.com.au/2015..."
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For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Friday, December 27, 2019

Backward Inverted L Antenna. Post 2096.


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

Here's an interesting variation of the popular Inverted L Antenna used by many radio amateurs.  If you live in a seaside or mountainous area, you may find this antenna from Stan Gibilisco (W1GV) useful.  This antenna is suitable for home, portable, and emergency use.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, December 26, 2019

EFHW Antenna --- Building The Transformer


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=sty7RlXQoJI. This is post 2095 in a continuing series of articles on simple ham radio antennas.

Thanks to Steve Ellington for this easy-to-understand tutorial on how to design and build a 49:1 transformer for End-Fed-Half-Wave antennas.  Steve does an excellent job of explaining both the theory and practical application of this useful device.

Here are some of Steve's remarks:

"Here is how I assembled a 49:1 impedance ratio transformer for my EFHW. Correction: Torroid part number is 5952003801 Link to torroid https://www.fair-rite.com/product/tor... Please join our Facebook Group: https://www.facebook.com/groups/EndFe... Newer video https://www.youtube.com/watch?v=Bpdpk..."

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, December 25, 2019

A handheld telescopic portable dipole for 6 and 10 metres


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IQ_dI4aVHj8.  This is post 2094 in a continuing series of simple ham radio antennas.

Australian radio amateur Peter Parker (VK3YE) has created another great antenna for portable and emergency use.  This time, Peter shows us how to make a handy, easily-made portable antenna for 6 and 10 meters.

Here are some comments by Peter:

"Covering two bands and collapses down to almost nothing, this portable dipole is idea (l) for summer contacts on 6 & 10 metres. Watch video for description and demo. 27 MHz CBers should be able to use this antenna by adding a turn or two extra on each coil. PS: Like these videos? Wish to support this channel? If so please store this link to Amazon Shopping as a bookmark or favourite. https://www.amazon.com/s?k=amateur+ra... Then when you buy something I receive a small commission (at no extra cost to you). Or check my books page to see if any appeal. http://home.alphalink.com.au/~parkerp..."
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For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).



Tuesday, December 24, 2019

A Ham's Night Before Christmas Video. Post 2093.


A Ham's Night Before Christmas Video
Source:
http://www.arrl.org/news/a-ham-s-night-before-christmas-video.
Accessed on 24 December 2019, 1955 UTC, Post 2093.
Summary:

Now that the Christmas Season is finally here, I thought it appropriate to offer one of my favorite seasonal programs--"A Ham's Night Before Christmas" video.

The original program was published by HQ ARRL on 28 November 2011.  The text and videos still remain popular today.

A Ham's Night Before Christmas Video

TAGS: gary pearceradio
11/28/2011Just in time for the Holidays, Gary Pearce, KN4AQ, has created a video version of Clement Clark Moore's poem A Visit from St Nicholas, more commonly known as The Night Before Christmas, but Gary's version has a decidedly Amateur Radio twist. With a guitar accompanyment by Don Mercz, WA3AYR, A Ham's Night Before Christmas features QST magazine covers, Gil cartoons and Christmas-themed QST advertisements from days gone by. Click here to watch the video on the ARRL YouTube channel.

Monday, December 23, 2019

Vertical extended double zepp antenna for 2 metres FM (and more!)


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Q-t8NBL67fc.  This is post 2092 in a continuing series on simple ham radio antennas.

In this video, Australian radio amateur Peter Parker (VK3YE) shows us how to make a simple, effective omnidirectional vertical antenna for VHF FM simplex and repeaters.  The extended double zepp exhibits a modest amount of gain--just enough to hit distant repeaters and perhaps work a bit of 2 meter DX.

Most of the antenna's materials can be found in your junk box or at the nearest building supply outlet.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, December 22, 2019

DIY VHF ANTENNA TUNER made from junk. Post 2091.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=95tup1t9PGc.

Thanks to "crookedninja5" for this simple, useful antenna "tuner" for the 2-meter amateur/ham band.

"Crookedninja5" says the idea for this project came from a desire to make his homebrew coat hanger VHF antenna more broadband.

Here are some of the steps used by this radio amateur to make this homebrew antenna "tuner":

"I needed something to make my clothes hanger antenna a little more broad-banded in the 100-200 MHz range, so I made a simple antenna tuner from junk... this would work for scanners too.... The variable capacitor can be any 0-365 pf capacitor... for c1 and c2 a ceramic or trimmer capacitor can be used... c3 and the coil is all you really need... About 8 or more turns on the inductor coil with taps spaced out every other turn. The rotary switch is from a old indoor antenna... everything in this vid was from a junk box, except for the RadioShack enclosure. Once you get the right combination of coil inductance and capacitance you'll see a difference it makes to your signal reception. This setup can also be used for SWL in the 3-30 MHz range with a 1" diameter coil of 120 turns and a random wire antenna! The bigger your coil the lower you can go!"
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For the latest Amateur/Ham Radio news and information, please visit these websites:


http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://www.eham.net.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://paper.li/f-1576465810 (breaking Amateur/Ham Radio News).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, December 21, 2019

Easy-Up Dipole for 60-Meters And? Post 2090.


Easy-Up Dipole for 60-Meters And?
Link:  https://www.eham.net/article/43734.
Author:  Norman Sullivan (NZ5L).

If you want a new and interesting daytime QSO, check out the 60-Meter Amateur Radio Band (5.332 MHz to 5.405 MHz).  With a simple dipole or inverted V antenna, you can get reliable contacts out to approximately 300 miles/486 km, depending on propagation.

The 60-Meter band is perfect for local, state, and regional communications, and lends itself to ARES and RACES operations.

Although there are few commercial antennas made for the 60-Meter band, you can easily build a dipole or inverted V antenna for this band with locally made materials.

In this post, Norman Sullivan (NZ5L) takes us step-by-step through the construction of this simple HF antenna.  If you haven't tried the 60-Meter band, "you are missing out on a lot of pleasant mid-range daytime QSOs."

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, December 20, 2019

Ham Radio - A 40 meter folded dipole using window line.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=cS5nlutY_L4. This is post 2089 in a continuing series of articles on simple ham radio antennas.

Here's another HF antenna idea that may prove useful at your QTH. In this well-made and easily understandable video, Kevin Loughin (KB9RLW) explores the folded dipole antenna from both a theoretical and practical point of view.  The antenna is a good match for 450-ohm window line (ladder line) or even 300-ohm television twin lead. 

Kevin has listed a few observations and suggestions about this antenna:

"In all the years I've been playing radio, I've never built a folded dipole. Boy have I been missing out! These are amazing performers. Link to the 3D part for the center: https://www.thingiverse.com/thing:361... My video on making the 4:1 Balun: https://youtu.be/l5rLI8FpM9g A few pages with technical info on folded dipoles: https://www.electronics-notes.com/art... https://www.w8ji.com/folded_dipole.htm https://www.qsl.net/w4sat/fdipole.htm If you like my videos, please subscribe here: http://www.youtube.com/user/loughkb?s... If you want me to keep making more videos like this, consider becoming my patron at Patreon: http://www.patreon.com/kb9rlw/ Discuss this and other videos on Facebook: https://www.facebook.com/kb9rlw/"
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For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Thursday, December 19, 2019

Build a Coax Tester! Post 2088.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=WJXr9LEE0vk.

Here's another great amateur radio accessory for your antenna experiments.  Dave Tadlock's (KG0ZZ) Coaxial Cable Tester is an easy way to check PL-259 connections and trace problems in patch cables.  Test your antenna cables now and see just how much loss is occurring between your rig and antenna.  Lots of good, practical advice in this video.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, December 18, 2019

All About Baluns (Ask Dave #73). Post 2087.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=GMeOMwf2DJU.

Here's another outstanding presentation from Dave Casler (KE0OG).  This time, Dave gives us a thorough explanation of both the theory and practical use of baluns. 

Dave says the idea of this post came from many questions he received from radio amateurs regarding baluns and how they are used in amateur radio applications.

"I get lots of questions about baluns. This video explores baluns and gives demos. A balun is a device to convert a balanced transmission line to an unbalanced transmission line and vice versa. Subscribe: https://youtube.com/davidcasler. Ask Dave Playlist: https://goo.gl/inaQeB. Tip Jar: http://ke0og.net/tip-jar"
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For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://www.eham.net.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, December 17, 2019

Cheap 40m high-gain Aerial. The Half Square. Simple Amateur Ham Radio An...


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=a0i0EazI3O0.  This is post 2086 in a continuing series of simple ham radio antennas.

In our last post, we learned how to build an 80 meter half square antenna, which delivers broadside coverage, a low takeoff angle, and moderate gain over a conventional dipole.

We suggested that the same construction practices could be applied to other amateur/ham radio bands, including 40 meters.

In this video, Callum McCormick (M0MCX), sets the stage for creating this antenna with a general overview of the half square and some of the construction considerations involved with this antenna.

If you want an efficient, high performance DX antenna, then the half square may be 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.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Monday, December 16, 2019

80 Meter Half Square. Post 2085.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2SBGdPMnH-E.

Thanks to Don Johnson (N4DJ) for this excellent discussion on how to design, build, test, and tune an 80 meter half square antenna.

If you have the space and want an excellent DX antenna, then the half square is for you.  The general pattern of the half square is broadside to the antenna, giving you a takeoff angle near 15 degrees.

If you can't make an 80 meter version of this antenna, try a 40 or 20 meter version.  You won't be disappointed. 

Don does an excellent job of taking you step-by-step through the antenna building process.

Here's what Don had to say about his new half square antenna:

"My 80 meter bent half square was probably the best antenna I ever had. I had it broadside to Europe at my Hampton Va QTH, I had it broadside to the Pacific area for one contest at my New Kent location and then installed it again broadside to Europe. Very hard to work Europe off the ends so I took about 5 hours to rotate it. Only rotated it once!"

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.bluberry.com/arrlaudionews/
http://www.hamradioupdate.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.
https://paper.li/f-1576465810 (breaking amateur/ham radio news).

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).




Sunday, December 15, 2019

40 Meter Inverted V Antenna - Build, Tune


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=7za6gPWcNng. This is post 2084 in a continuing series on simple ham radio antennas.

Thanks to Dave Tadlock (KG0ZZ) for this excellent tutorial on designing, building, tuning and testing a basic Inverted V Antenna.

Inverted V antennas are excellent performers if you have limited space for a full half- wave horizontal dipole antenna.  In Dave's example, the end of each antenna segment is 11 feet/3.35 meters above ground, allowing sufficient space for people and animals to pass through without injury.

A few years ago, I built a variation of this antenna fed with 450 ohm ladder line.  That antenna covered 40 through 10 meters with the help of an antenna transmatch (i.e. "tuner").  Without a tuner, the antenna will cover part of the 15 meter band, using the third harmonic of 7 MHz.

The video is well-organized and easy to follow, especially if you lay out the materials in the way Dave has shown.  Just take your time. The end result is a versatile, efficient antenna that will serve you well for years.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, December 14, 2019

Building a dipole for 40 and 20 meters. Post 2083.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?reload=9&v=RVKRnQmrx3k.

Propagation these days seems to favor the 40 and 20 meter bands. Why not build an antenna that covers these two bands?

In this video from "RC 286", we see a well-organized approach to the construction of this simple, effective antenna.  With all materials laid out in a systematic manner, it will be easy to build and test this homebrew HF antenna.

Most of the materials used in this two-band HF antenna can be found at the nearest hardware store or home improvement outlet.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://www.eham.net.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, December 13, 2019

Homebrew 20 Meter DiPole Antenna speaker wire


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=qXfIgA28164.  This is post 2082 in a continuing series of simple ham radio antennas.

Thanks to "Ham Radio CQ" for this ultra simple and inexpensive 20 meter antenna.

HF antennas don't have to be expensive to work well.  Surplus parts and a good search through a local hardware store can often give you enough parts to make an effective HF dipole for any band of your choice.  Online vendors, such as Amazon, can supply you with wire and simple tools to assemble your "homebrew" antenna.

This video is easy to follow and takes you step by step through the design, building, and testing phase of creating a working HF dipole antenna for the 20 meter band.

Here's a list of possible materials and vendors you can use to build this antenna:

"As an Amazon Associate I earn from qualifying purchases. Amazon speaker wire 250' https://amzn.to/2BUspRb G5RV Antenna https://amzn.to/2FuCmrR MFJ-915 RF Line Isolator 1.8-30 MHz, 1500W PEP, SO-239 https://amzn.to/2BWAuVd Cheap DIY Dipole out of speaker wire, 1.5 SWR, amazing results."

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


http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, December 12, 2019

Speaker Wire 44' Doublet Antenna. Post 2081.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=e3x_uOzIFJ4.

Here's another great HF antenna for those with small urban lots or for those who enjoy operations in the field.

Craig Sheppard has done a good job of showing how surplus wire and a few common parts can get you on the air with a multiband HF antenna. 

Craig gives this quick outline of this homebrew antenna:

This is a quick look at my portable 40m-10m 44' doublet antenna made from speaker wire, milk bottle cap insulators, a crappie pole, and hiking poles.

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Although 44 feet/13.41 m seems a bit short for 40-through 10 meter coverage, Craig's antenna seems to do the job.  Be sure to have an antenna transmatch (i.e. "tuner") to facilitate tuning and SWR reduction.


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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://www.eham.net.
https://bigislandarrlnews.com.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, December 11, 2019

How to make a 4 to 1 balun cheap and easy


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=7lYY7nkKrWo.  This is post 2080 in a continuing series of articles on simple homemade antennas.

Thanks to the "Wiltshire Man" for this simple, easily made 4 to 1 balun for multiband HF antennas.

Here's how this radio amateur describes this project:

I built this simple air cored balun in next to no time. No need to worry about toroids etc. It works from 3 to 30 mhz and handles 200 watts easy. If you use thicker wire it will handle a cool 1KW.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blurbrry.com/arrlaudionews/
http://www.hamradioupdate.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).

Tuesday, December 10, 2019

Ham radio 40 meter homebrew ground mount vertical


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=2qEQN_FV0Pk.  This is post 2079 in a continuing series of simple, homemade ham radio antennas.

Thanks to Ric (K8YIO) for this simple, elegant 40 meter vertical antenna for your backyard.  This antenna will cover 40 and 15 meters without a "tuner".  A transmatch (i.e. "tuner") will allow coverage of 20 meters and 10 meters.

The key to this antenna is a good ground radial or counterpoise system.  Lay down as many radial wires as you can to help boost performance and reduce ground losses.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.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).

Monday, December 9, 2019

Building a cheap, portable, vertical HF Antenna


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

If you need a simple, efficient, and easily made HF vertical antenna, then this video from Adrian ("One Time Pad") will interest you.  The antenna can be made from locally available parts or from your "junk box."  Adrian says "this antenna will work other bands with a tuner/matching unit."  Be sure to ad some extra ground radials for added efficiency.

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

http://www.HawaiiARRL.info.
http://www.blubrry.com/arrlaudionews/
http://www.arrl.org.
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, December 8, 2019

Top loaded HF vertical antenna with ground tuning unit


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=P7lxt8EatDw.  This is post 2077 in a continuing series of simple ham radio antennas.

Thanks to Australian radio amateur Peter Parker (VK3YE) for this easy to understand tutorial on how to build a top loaded HF vertical antenna with a ground tuning unit.  This antenna is ideal for small urban lots or for portable operations.  Besides the basic antenna, all you really need is a decent ground radial/counterpoise system to complement this reduced size vertical antenna.

Here are some of Peter's guidelines:

"Don't have much height but have something metal underneath? If so a top loaded vertical is a great antenna to try. Just 10 metres wide and 5 metres tall it will even load up on 3.5 MHz. Especially if you're over salt water, you're unlikely to get anything better for its size. The key items needed include wire, two poles, a simple antenna coupler (an L-match is fine), something to clip onto the counterpoise railing and a ground tuning unit. I'll probably describe a more refined version later but it comprises a variable capacitor in series with an inductor. It's also desirable to have an RF current indicator. PS: Like these videos? Wish to support this channel? If so please store this link to Amazon Shopping as a bookmark or favourite. https://www.amazon.com/?&_encoding=UT... Then when you buy something I receive a small commission (at no extra cost to you). Or check my books page to see if any appeal. http://home.alphalink.com.au/~parkerp..."
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For the latest Amateur/Ham Radio news and information, please visit these websites:  http://www.HawaiiARRL.info; http://www.arrl.org; http://www.blubrry.com/arrlaudionews/; http://www.hamradioupdate.com; http://www.southgatearc.org; https://oahuarrlnews.wordpress.com; https://hamradiohawaii.wordpress.com; https://bigislandarrlnews.com; https://www.eham.com

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, December 7, 2019

New Ham Tips - Lengthening antennas with a strong Lineman's Splice


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

If you've ever misjudged the length of an antenna element and needed to add more wire, then this video from Kevin Loughin (KB9RLW).

In this well-organized tutorial, Kevin shows us an easy way to extend the length of a wire antenna using a "Lineman's Splice."

The splice is strong and easy to make with common tools.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Friday, December 6, 2019

KG0ZZ's Amateur Radio Tower Stand. Post 2075.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=0ZbfsuuoSDg.

If you're thinking about designing a radio tower for your Amateur/Ham Radio station, you may find this video from Dave Turlock (KG0ZZ) very interesting.

Dave used five sections of Rohn 25-G for the tower.  Please note the base and hinge parts used in the initial phases of construction.
The top section of the tower is 8-ft/2.43-m, making the total length of the tower approximately 48-ft/14.63-m.

Just a word of caution to would-be tower makers.  Please hire a professional engineer to design and build your tower if you lack experience in building such structures.  Tower erection can be dangerous if you don't know what you're doing.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Thursday, December 5, 2019

6 Meter Squalo Antenna Build. Post 2074.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=U3ZGJWuzgRs.

A thoroughly fascinating, informative video from Chris (K2CJB) on how to build and install a 6 meter "Squalo" Antenna.  The squalo antenna was a popular 2 meter mobile antenna for those using SSB on the 2 meter amateur radio band.  Chris has done a fine job of adapting the original design of Ernest Neijenhuis (PA3HCM) to this project.

For detailed plans on this antennas, please visit Ernest's website at http://www.pa3hcm.nl/?p=312.

The squalo antenna would be perfect 6 meter antenna for those living on a small urban lot.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Wednesday, December 4, 2019

Ham Radio - My 630 meter magloop. An overview


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=Wrfmmb-YNyI. This is post 2073 in a continuing series about ham radio antennas.

In this well-paced video from Kevin Loughin (KB9RLW), we learn how to design, build, and test a simple 630 meter magloop antenna.

This antenna can be used in deed-restricted housing (HOAs and CC&Rs) as well as in portable and field operations.

Kevin has done an excellent job of showing how this simple antenna can be made.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Tuesday, December 3, 2019

Compact Homebrew End Fed QRP Antenna. Post 2072.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=6hq7HAOYjZA.

Here's another great, inexpensive end fed antenna you can build for both portable and home operations.  WI9LL demonstrates just how easy it is to make one of these handy HF antennas.

"I built this antenna specifically for low wattage QRP use to be compact and inexpensive. It utilizes a 9:1 unun wrapped on a T106-2 toroid and minimal hardware to be lightweight. Here is a video of me testing the antenna with WSPR mode. The results surprised me: https://youtu.be/2-AwzPk1g4Q"
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For the latest Amateur/Ham Radio news and information, please visit these websites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, December 2, 2019

Ham Radio - My second HF antenna. A stealth end fed wire for 80 - 10 m...


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=oMchB-bML98.  This is post number 2071.

This video came from a need to design, build, test, and use a backup HF antenna that would be reasonably effective, while remaining undetected by neighbors.

Kevin Loughin (KB9RLW) decided to build a simple end-fed wire antenna that would be attached to his roof and could cover 80 through 10 meters.

Kevin takes you step-by-step through the design, assembly, and tuning procedures.  Be careful with this antenna, since high voltages may be present at the end point of the antenna.  Be sure to use a balun, antenna "tuner", and a good counterpoise with this antenna system.

The length of this antenna is 58-feet/17.68 meters, with the counterpose measuring 40-feet/12.19 meters.

If you live in deed-restricted housing, this antenna may get you on the air without attracting the attention of your neighbors.
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For the latest Amateur/Ham Radio news and information, please visit these web sites:

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.
https://www.eham.net.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Sunday, December 1, 2019

Fractal Antennas with Chip Cohen W1YW. Post 2070.


If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=c6TI7mwXwFI.

If you like to experiment with antennas, then this selection from "Ham Nation, Episode 355" may interest you.

In this video from the TWiT Tech Podcast Network, Valerie Hotzfeld (N9VL) discusses Fractal Antennas with Chip Cohen (W1YW), the founder of Fractal Antenna Systems.

The video clip discusses the general theory behind Fractal Antennas, where you can find them, and some of their practical applications, including Amateur/Ham Radio.

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

http://www.HawaiiARRL.info.
http://www.arrl.org.
http://www.blubrry.com/arrlaudionews/
http://www.hamradioupdate.com.
http://www.southgatearc.org.
https://oahuarrlnews.wordpress.com.
https://hamradiohawaii.wordpress.com.
https://bigislandarrlnews.com.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).