Posts

HOW TO BUILD A BALUN 4 TO 1 TUTORIAL. Post #703.

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If you're having trouble viewing this video, please insert this title link into your browser search box: https://youtu.be/TI_8msSbpDQ.  This video from "Shlomofir" will show you a simple way to make a voltage fed 4:1 balun for your multiband dipole antenna .  Most of the materials can be obtained from the nearest hardware store or building supply outlet.  The only quibble I have with this otherwise excellent video is the use of a black PVC pipe section for the balun.  Black PVC pipe may contain carbon which could alter the characteristics of the balun.  Stick with a white PVC section for the balun and run low power, and you should be alright.  For the latest amateur radio news and events, please check out the blog sidebars.  These news feeds are updated daily. You can follow our blog community with a free email subscription or by tapping into the blog RSS feed. Thanks for joining us today!  Aloha es 73 de Russ (KH6JRM). Related articles Happy News - A 22-year

Simple Ham Radio Antennas--Multiband Dipole Antenna. Post #702.

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If you're having trouble viewing this video, please insert this title link into your browser search box: https://youtu.be/wH0RNIr9cqE.  Here's another simple, cheap, and easily constructed dipole antenna for your backyard, courtesy of "Daz" 026-PS-001) of the UK .  Working with readily available materials, Daz made a dipole antenna from a wire 108-feet/32.92 meters long, suspended it from supports in his backyard, and fed the antenna with 50- ohm coaxial cable terminating in an air-wound coil (7 turns of coaxial cable).  The coil was then connected to his antenna transmatch (i.e. "tuner").  Daz says the antenna works well on all Amateur Radio bands from 80 through 10 meters.  The only change I would make in this arrangement would be to fed the antenna with 300 ohm television twin lead, 450 ohm ladder line , or some homebrewed balanced line . Attach the feed to a balanced tuner (or to a 4:1 balun and then connect the balun to your tuner), and you'

Simple Ham Radio Antennas--Radio Club Activity Day: Antenna Building. Post #701.

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If you're having trouble viewing this video, please insert this title link into your browser search box: https://youtu.be/zkbWT0MZ3QU.  What a great idea for a club project!  Randy Hall (K7AGE) and his fellow radio amateurs of the Pelican Bay Amateur Radio Club in Brookings, Oregon recently held an antenna building day for those who have never built an amateur radio antenna or have never used a soldering iron for a homebrew radio project.  The activity was a huge success, with participants learning a lot about antennas and having the opportunity to use an antenna they built themselves.  For the latest Amateur Radio news and events, please check out the blog sidebars.  These news feeds are updated daily.  You can follow our blog community with a free email subscription or by tapping into the blog RSS feed.  Thanks for joining us today! Aloha es 73 de Russ (KH6JRM).

Simple Ham Radio Antennas--Receiving Antennas Will Be Focus of Free Webinar. Post #700.

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Receiving Antennas Will Be Focus of Free Webinar : Receiving Antennas Will Be Focus of Free Webinar. Source:  http://www.arrl.org/news/views/receiving- antennas -will-be-focus-of-free- webinar . Accessed on 27 Februrary 2016, 01;35 hrs, UTC . Special thanks to Ken Claerbout (K4ZW) and The Daily DX. TAGS: Carlos, Daily DX, evening, experiences, foundation, free webinar, Jose, Ken Claerbout, low-band receiving antennas, place, Registration, thanks, Thursday, time zones , topic, utc, Waller Flag, Wide Radio Operators, World, WWROF 02/26/2016 “High Performance RX Antennas for a Small Lot” will be the topic of a free webinar by Jose “JC” Carlos, N4IS, and sponsored by the World Wide Radio Operators Foundation (WWROF). Carlos will explore basic concepts of receiving antennas and share his experiences with low-band receiving antennas on a small lot, including the Waller Flag. The webinar will take place on March 4 at 0200 UTC (the evening of Thursday, March 3, in US time zones). I

Simple Ham Radio Antennas--Slot antenna parabolic dish based 2m 440. Post #699.

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If you're having trouble viewing this video, please insert this title link into your browser search box: https//youtu.be/I144kzJxzDA.  How would you like to build a stealthy 2m/70 cm stealth antenna by using the ubiquitous satellite receiving dish?  Thanks to James Sanders (AG6IF), you can convert that unneeded or extra satellite dish into something more useful without incurring the ire of noisy neighbors--namely, a totally disguised antenna for VHF/UHF antenna.  Jim cut a 40 inch/110.60 cm slot within a parabolic dish fed with a SO-239 jumper about 4.5 inches/11.43 cm from the end of the slot.  The antenna is vertically polarized and should be able to work repeaters in your neighborhood. A nice, simple, cheap, and largely invisible VHF/UHF antenna for HOA/CC&R situations. For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily.  You can follow our blog community with a free email subscription or by tapping into th

Simple Ham Radio Antennas--4.2 Short Dipole. Post #698.

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If you're having trouble viewing this video, please insert this title link into your browser search box: https://www.youtube.com/watch?v=eiVrgq10BFE. A professionally produced video tutorial on short dipoles , prepared for a junior electromagnetics course in electrical engineering at Bucknell University . The video is being used as supplementary course material for future electrical and broadcast engineering students.  The video covers the basics of short or Hertzian dipole antennas with an emphasis on antenna theory , classification of antennas (current and aperture), general properties of short dipole antennas, and design considerations.  Although the mathematics used in this video are a bit complex, the explanation and diagrams are easy to understand.  Understanding the complexities of dipole antennas may involve a learning curve, but, when you do understand the theory behind this simple antenna, you will get a better grasp of why antennas behave as they do.  This video

PL259, Install a PL259 the easy way, Coax connector, PL259 with no solde...

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If you're having trouble viewing this video, please insert this title URL into your browser search box: https://youtu.be/qPIcT9SXNPs.  This is post #697.  I've always dreaded attaching PL259 connectors to coaxial cable.  I'm not the most coordinated guy, so close-in work like this often leaves me nervous. Now that I've seen this excellent video by Robert Sumpton, most of my fears are gone.  In this tutorial, Bob show us how to install a PL259 coax connector without soldering the shield braid, a proven method used by hams for over 35 years, by an Extra Class radio amateur, who has been a ham for 58 years. In this video, Bob uses copper braid RG-8 coaxial cable.  A nicely done, easily understandable presentation.  For the latest Amateur Radio news and events, please check out the blog sidebars. These news feeds are updated daily.  You can follow our blog community with a free email subscription or by tapping into the blog RSS feed. Thanks for joining us today!  Aloha e