Wednesday, December 13, 2017

Ham Radio 2m Backpack Quad Antenna. Post #1341.


If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IAiiIzV8NpI.

Here's another portable antenna idea from Dave Tadlock (KG0ZZ). In this video, Dave shows us how to build a lightweight 2 meter quad antenna that can be carried in your backpack when you go camping, hiking, or participating in SOTA (Summits On The Air) events.  A more robust version can be used at your home station to hit distant repeaters or for trying some 2 meter DX.  Dave takes you step-by-step through the design, construction, and use of this versatile antenna.

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

http://wwwHawaiiARRL.info.
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.com.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday).
http://amateurradionewsinformation.com (Amateur Radio News & Information).

Other sites of interest:

Hawaii Science Digest (http://hawaiisciencedigest.com).
Hawaii Intelligence Digest (https://hawaiiintelligencedigest.com).
Hawaii Intelligence Daily (https://paper.li/f-1482109921).
Hawaii News Digest (https://prgnewshawaii.wordpress.com)

Be sure to check the blog sidebars for more antenna and propagation articles.

Opinions expressed in this blog are mine unless otherwise noted.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Tuesday, December 12, 2017

CommsToGo Radio And Backpack Antenna. Post #1340.


If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IEidACZ1Ebc.

Here's another great portable/emergency radio "go kit" that can be assembled from locally available parts or from a number of online amateur radio equipment dealers. John Jacobs (W7DBO) has done an excellent job of designing and building a portable ham radio station suitable for field operations.  It's always a good idea to have a backup station available when disaster strikes or when you feel like bringing amateur radio along during a hike or camping trip.

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

http://www.HawaiiARRL.info.
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.com.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday).
http://amateurradionewsinformation.com (Amateur Radio News & Information).

Other sites of interest:

Hawaii Science Digest (http://hawaiisciencedigest.com).
Hawaii Intelligence Digest (https://hawaiiintelligencedigest.com).
Hawaii Intelligence Daily (https://paper.li/f-1482109921).

Be sure to check the blog sidebars for more antenna and propagation articles.

Opinions expressed in this blog are mine unless otherwise noted.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Monday, December 11, 2017

Ham Radio - Salvaging a burned MFJ 962D versa tuner. Post #1339.


If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch/v=uWgP9YE9pOU.

A nice video tutorial from Kevin Loughin (KB9RLW) on how to fix one of the popular MFJ antenna "tuners"--in this case, a MFJ-962D Roller Inductor tuner rated at 1.5 KW.

Apparently, something in the roller inductor failed, leading to some burned components.  Kevin has done an excellent job of diagnosing the problem and then fixing the breakdown.  A clear, understandable step-by-step repair procedure.

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

http://www.HawaiiARRL.info.
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.com.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday).
http://amateurradionewsinformation.com (Amateur Radio News & Information)

Other sites of interest:

Hawaii Science Digest (http://hawaiisciencedigest.com).
Hawaii Intelligence Digest (https://hawaiiintelligencedigest.com).
Hawaii Intelligence Daily (https://paper.li/f-1482109921).
Hawaii News Digest (https://prgnewshawaii.wordpress.com).

Be sure to check the blog sidebars for more antenna and propagation articles.

Opinions expressed in this blog are mine unless otherwise noted.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).


Sunday, December 10, 2017

Portable ham radio antennas. Post #1338.


If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=5HTOWnMFj_E.

In this video, "Prepper Ohio" shows us some of the small, compact antennas available for Amateur Radio VHF/UHF hand held transceivers.  A good, basic tutorial on how to chose the best antenna for your HT.  It's been my experience that the standard "rubber duck" antenna that comes with most HTs delivers marginal performance.  A 1/2 wavelength whip antenna is perhaps a better choice.  You may also want to attach a "tiger tail"  to the base of your "rubber duck" stock antenna.  This 1/4 wavelength wire will increase the performance and efficiency of the stock antenna.  The "tiger tail" serves as a counterpoise wire, supplying the "missing half" of the helically wound 1/4 wavelength stock antenna.

For the latest Amateur 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).
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.com.
http://amateurradionewsinformation.com (Amateur Radio News & Information).

Other sites of interest:

Hawaii Science Digest (http://hawaiisciencedigest.com).
Hawaii Intelligence Digest (https://hawaiiintelligencedigest.com).
Hawaii Intelligence Daily (https://paper.li/f-1482109921).

Be sure to check the blog sidebars for more antenna and propagation articles.

Opinions expressed in this blog are mine unless otherwise noted.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Saturday, December 9, 2017

CUSTOM S-MATCH BALANCED HOMEBREW TUNER. Post #1337.


If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=IwXYP4vTOso.

If you use a balanced feeder to connect your rig to your antenna system, you'll need this simple S-Match balanced "tuner" for your shack.  The "tuner" will help match the impedance of your antenna to the impedance of your rig, insuring maximum power transfer and lowered SWR.

This video does an excellent job of taking you through the design and construction process of this simple balanced tuner.  Although the author of this blog says the "tuner" can handle 100 watts, perhaps you would be more comfortable in using this device at power levels below 30 watts.

For the latest Amateur Radio News and Information, please visit these websites:

http://www.HawaiiARRL.info.
https://oahuarrlnews.wordpress.com.
https://bigislandarrlnews.com.
http://www.arrl.org.
http://www.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday).
http://amateurradionewsinformation.com (Amateur Radio News & Information).

Other sites of interest:

Hawaii Science Digest (http://hawaiisciencedigest.com).
Hawaii Intelligence Digest (https://hawaiiintelligencedigest.com).
Hawaii Intelligence Daily (https://paper.li/f-1482109921).
Hawaii News Digest (https://prgnewshawaii.wordpress.com).

Be sure to check the blog sidebars for more antenna and propagation articles.

Opinions expressed in this blog are mine unless otherwise noted.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).