Posts

The 80m Amateur Radio Band & NVIS. Post #1302.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=NABWhIHJwdc. If you enjoy portable operations and find it difficult to contact stations on 80 meters, you may want to make a NVIS (near vertical incident skywave) antenna covering this great "rag chew" and daytime regional band. In this video, Gil (Commsprepper) shows us how to make a simple NVIS antenna that delivers excellent local, state, and regional coverage up to 400 miles/648 km.  This video shows Gil's 135-foot/41.15 meters NVIS antenna suspended over a wooden bridge.  He reports excellent local and regional coverage from this simple installation. Eighty meters is an excellent band for portable and local emergency operations. 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://ww

160 Meter Folded Counterpoise Inverted L Antenna. Post #1301

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=ZZoYyIuYdaU. Here's an interesting variation of the classic Inverted L Antenna that can get you on the 160 meter Amateur Radio band without taking up much space.  The antenna is based on work done by Guy (K2AV) and built by Steve Ellington. Steve's antenna has a vertical height of 70-feet/21.34 meters and a horizontal length of 80-feet/24.39 meters.  The elevated folded counterpoise is 66-feet/20.12 meters long and mounted 8-feet/2.43 meters above ground. Hopefully, this antenna can get you on 160 meters. 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 afternoon). https://paper.li/kh6jrm/1330289353 (Amater Radio Ne

How To Build A QRP Dummy Load. Post 1300.

Image
If you can't view this video, please insert this title URL into your browswer search box: https://www.youtube.com/watch?v=O9FLgWoyfsY. Here's a simple, effective QRP dummy load for field or portable operations.  In this video, Randy (K7AGE) takes us from beginning to end in making this useful station accessory.  Randy says the dummy load can handle 20 watts without a problem. The dummy load also has a test point that you can use to meter your voltage and calculate the power of your transmitter.  A nice, basic project that will be useful for years to come. For the latest Amateur Radio News and Information, please visit these web sites: 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 that is updated each Friday afternoon). https://paper.li/kh6jrm/1439289353 (Amateur Radio News & Information). Other sites of interest: Hawaii Science Digest

Major Antenna Manufacturer Ends Its Production. Post #1299.

Major Antenna Manufacturer Ends its Production (https://www.eham.net/articles/40320). Accessed on 02 November 2017, 0115 UTC, Post #1299. Author:  Jim Linton (VK3PC) Please click link or enter title URL into your browser search box to read the formal press release from the Wireless Institute of Australia. Comment: It's always a sad story when a major manufacturer of amateur radio equipment closes its doors.  In this case, the company involved is Australian antenna manufacturer Polar Electronic Industries of Australia, a brand known for its rugged and dependable line of Polar Antennas. Wireless Institute of Australia's spokesman Jim Linton (VK3PC) issued this press release about the closure: Major antenna manufacturer ends its production Date : 01 / 11 / 2017 Author :  Jim Linton - VK3PC Known worldwide Polar Electronic Industries of Australia, the designers and manufacturer of quality communication antennas for 41 years, has closed leaving a gap for the radio a

How to Build Field Expedient Antennas. Post #1298.

Image
If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=FCf3vfZEqYI. This outstanding video tutorial on field expedient antennas comes from a radio class taught to U.S. Marines (B09 Field Expedient Antennas).  Although the well-paced presentation is a bit short on theory, the practical applications of tested antenna construction and use in the field are outstanding. The speaker is excellent and paints a mental picture of methods and factors that can add or detract from field operations.  This video would be an excellent resource for those mentoring ("elmering") newly licensed radio amateurs. 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 afternoon). https://paper.li/