Posts

Homemade dual band half wave flower pot antenna. Post #1664.

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If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=rusIhx0ptNg. Here's a nicely done video tutorial from M6CTP showing us how to make a dual band half wave flower pot antenna for 2 meters and 70 cm.  The step-by-step procedure is easy to understand and should give you good results when you're finished.  Most of the materials can be found at the nearest hardware or building supply outlet.  You may have to order coaxial cable if no local stores carry this item. 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

Cheap Yagi 6 element beam antenna for 221.1 MHz. Post #1663.

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If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=QCxpaCAhj3Y. If you're tired of the noise and congestion on the 2 meter and 70 cm amateur radio bands, why not try the largely unexplored region around 221.1 MHz in the 1 3/4 meter band?  Because of the lack of readily available transceivers and antennas for this band,  you may have to build your own antenna and search awhile for a suitable VHF transceiver covering this band. The search may be worth the effort, since this slice of the rf spectrum offers many of the same advantages as the 2 meter amateur radio band, but without the noise and crowded conditions. In this video, KA5D modifies an original design by WA5VJB to produce an inexpensive 6 element beam antenna centered at 221.1 MHz.  Most of the antenna materials can be found in your junk box or at the nearest hardware or building supply outlet.  Although KA5D uses this horizontally polarized b

Extreme Broadband Dipole Antenna for 2 meters. Post #1662.

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If you can't view this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=PSED0Pxe7c0. This well-made and easy-to-understand video from "Giovanniram22" shows us how to build a broadband coaxial folded dipole antenna using RG-213 coaxial cable.  According to the author, the antenna is suitable for both transmitting and receiving on a frequency range of 140 MHz to 150 MHz.  This antenna could also be used on the 3rd harmonic to work stations in the 440 MHz-450 MHz amateur radio band (70 cm).  Most of the materials for this antenna can be found in your "junk box" or at your neighborhood building supply 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.arrl.org/arrl-audio-news (a weekly podcast which is updated each Friday afternoon). https://oahuarrlnews.wordpress.com. https://hamradi

Ham College 46. Post #1661.

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If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MGFHh6Hul7c. "Ham College" is one of my favorite video podcasts.  The presentations are laid back, easy to understand, and contain lots of humor.  In this edition from AmateurLogic.TV, the team continues its exploration of the General Class Amateur Radio License with an emphasis on Solar Propagation Effects and the characteristics of Delta Loop and Log Periodic Antennas.  The antenna segment of this program is well-organized and clearly explained. 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

3 band delta loop. Post #1660.

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If you can't view the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=wvdQ-aXBtLI. If you need a simple, quiet antenna that covers the 15/12/10 meter amateur radio bands, please consider this horizontal loop from Sandy (G4XRV).  The antenna is fed with balanced line and, apparently, doesn't need an antenna transmatch (tuner).  This design can be scaled for any range of amateur radio bands, if you build the antenna for the lowest selected frequency and use an antenna transmatch to reach higher bands.  I have a 40 meter delta loop which covers all ham bands between 40 and 10 meters.  I use an antenna "tuner" and 450 ohm ladder line to keep the rig happy.  If you can only use one antenna for HF, consider building a delta loop.  You won't be disappointed. For the latest Amateur Radio/Ham news and information, please visit these websites: http://www.HawaiiARRL.info. http://www.arrl.org. http://www.arrl.org/