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Showing posts from June, 2023

Invisible 5-Band HF Antenna.

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Radio amateurs living in deed-restricted homes, apartments, and condominiums face difficult antenna challenges.  Despite the limitations imposed by HOAs/CC&Rs, hams manage to get on the air with a variety of hidden or "stealth antennas." In this video from Peter Waters (G3OJV), we see how a little creativity and "thinking out of the box" can result in effective, simple HF antennas that work under severe space restrictions. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=dDbkiAXG0rg. Here are some comments from Peter (G3OJV): Some of the modern houses have restrictions on antennas. Here is a simple HF 5-Band antenna that you can make, yet it is invisible to the neighbours. 5% Discount Code (Ends 19th August 2022] BORIS7373 To make a purchase: https://hamradiostore.co.uk Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).  

2m Twin Delta Loop, Butterfly Antenna.

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If you're looking for a compact, light weight, and inexpensive 2 meter antenna for SOTA and POTA activities, please consider this twin delta loop from Karl (HL1KKC). Karl shows us the complete design, construction, testing, and deployment of this intriguing VHF antenna. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=qPkvwE_UsHE. Here are some comments from Karl (HL1KKC): This is a 2m twin delta loop antenna. Antenna material is made of easy to obtain. Small and light weight, good for outdoor operation and especially SOTA. Radio waves radiate back and forth. Thank you for watching 73 01/07/2020 www.qrp.kr Additional information, the outer diameter of PVC pipe cap is 33mm. 2m용 트윈델타루프 안테나 입니다. 안테나 재료는 구하기 쉬운 것으로 만들었습니다. 작고 가벼운 무게, 야외 운용 및 특히 SOTA에 좋습니다. 전파는 앞뒤로 방사 됩니다. 시청해 주셔서 감사 합니다 73 01/07/2020 www.qrp.kr additional 정보,PVC 파이프 캡의 외경은 33mm 입니다. #DeltaLoop #2mAnt HL1KKC Vlog Thanks for joining us toda...

HAM RADIO: Sloper Antenna-positives & negatives.

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End-fed halfwave antennas are popular for portable operations, such as SOTA (Summits On The Air) and POTA (Parks On The Air). To add more variety to the usual EFHW antenna, Tim (G5TM) suggests you modify this proven design into a "sloper antenna." Tim discusses the pros and cons of this EFHW variant.  You may be surprised by the results gained by this 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=Z7gD6_sHpVI. Here are some comments from Tim (G5TM): Lots of folks you are into portable work, POTA, SOTA use end fed half waves, with 40 metres a very popular band. Often, these are deployed as a sloper. What are the pros and cons of these? Connect with my channel by subscribing and commenting. Tim G5TM 10.8K subscribers Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).  

2 Meter Moxon SOTA Antenna.

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If you need a lightweight portable 2 meter antenna for SOTA (Summits On The Air) or POTA (Parks On The Air) activities, then you can't go wrong with this "Moxon" project from Mark (2E0VOV). The antenna is simple, inexpensive, and suitable for any "field" or home station. Mark used this antenna to contact the ISS in addition to his usual SOTA and POTA activities. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=V8hCGMSVWaE. Here are some comments from Mark (2E0VOV): Another project completed :-) This antenna was first made for contacting the "international space station" (ISS) using my Wouxun HT.While making it I added a center mount to use on a PVC sectional mast for Horizontal- SSB on SOTA activations. Its a very light antenna and as always with moxon's shows a very good F/B.. For more projects check http://www.qrz.com/db/2E0VOV 73's Sparkie 2e0vov 2.56K subscribers  

Build Your Own Roll Up Slim Jim Antenna For The 2 Meter Ham Radio Band.

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Here's a simple, elegant, and inexpensive roll up "Slim Jim" antenna for the 2 Meter Ham Radio Band.  This antenna is easily transportable and is suitable for both field and home station use. Mike (K8MRD) takes us through the design, building, testing, and use of this handy antenna.  Make one for your "go-kit" or for your next club meeting. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=igHQ3EsE5Bk. Here some comments from Mike (K8MRD): This is a really easy, fun antenna to build. If you are new to Amateur Radio, or just want an easy to deploy 2 Meter antenna for out in the field, this is a great project. Here is the link to the antenna calculator I used. Be sure to scroll down a bit to see the diagram of the 70 MHz Slim Jim constructed with 450 Ohm Balanced Feeder. The build is the same, we're just changing lengths to make it for 146 MHz. I also changed the velocity factor to...

How to make a dipole center insulator.

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Thanks to "Tim'sTools 99" for this simple, inexpensive accessory for Dipole Antennas.  This center dipole connector uses locally available materials and can be made with a few basic tools. If you can't see the video, please insert this URL into your browser search box:  https://www.youtube.com/watch?v=k7Jxi1G-OpE. Here are a few comments from "Tim'sTools 99": Making a center insulator for a dipole antenna is an easy and fun project. This video shows close-up how I did it. Thanks for joining us today. Aloha es 73 de Russ (KH6JRM).  

Testing the W3EDP-mini Antenna using 450-ohm ladder line.

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  This video from Gil Gruson ("Radio Prepper") shows us how to make a mini-version of the "classic" W3EDP antenna first described in 1936 by H.J. Siegal (W3EDP). This modification is ideal for small backyards and portable operations. If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=QgInZdN_DD0 Here are a few comments from Gil: This antenna has evolved from the original W3EDP, itself inspired by the ZEPP, and uses an impedance matching section made of ladder-line and a 4:1 BALUN. In this video I go the the Island of St Marguerite by sailboat and test the antenna on the boat as well as on land. Performance is as expected, not great, but it works and is practical, easy to build and use, as well as cheap. My original W3EDP video:     • W3EDP Antenna wit...   My video operating on the Island:     • The Man in The Ir... ...