The 20m DX Antenna everyone is asking about.


 If you want a simple, inexpensive 20 meter DX antenna, then this "inner and outer" portable antenna is what you're looking for.

According to Fraser (MM0EFI), this easily built 20 meter vertical with one radial element is ideal for field operations such as POTA and SOTA.

This basic antenna fits into your "go-kit" and can be stored in your vehicle or garage.

The antenna can also be used where space or deed restrictions place limitations on ham radio.

If you can't see the video, please insert this title URL into your browser search box:  https://www.youtube.com/watch?v=4zFynpiiuUg.

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).

Here are some comments from Fraser (MM0EFI):

How to build the Up and Outer 20m antenna. The aerial is basically a centre fed quarter wave antenna for 20m. One element is vertical, the other horizontal, suspended around 1m or 3' above ground. Start with two lengths 16.5' (5.02m) of wire. Find a suitable piece of material to hold the antenna, such as thin plastic chopping board. Select a chassis mount BNC or SO239 connector, which ever you prefer. Attach this through a hole in the chopping board. Solder one wire to the centre pin of your connector - this is the vertical radiator. Solder the other wire to the screen/shield tag of your connector - this is the counterpoise/horizontal element. Provide some strain relief for the wires - see how I did this in the video. Loop the ends temporarily, then raise the antenna and tune if with either a rig and SWR meter or an antenna analyser if you have one. Once you're happy with the SWR, cut off any excess wire and use heat-shrink or tape to hold the end loops firmly in place. Give it a go - it really is simple and works well! 73, Fraser MM0EFI

Follow along using the transcript.

The Radio Rover

2.16K subscribers

Comments

Post a Comment

Thank you for visiting my Amateur Radio Blog. I value your comments and suggestions. For Amateur Radio Antenna Topics and Discussions, stay here. For Amateur Radio News and Trends, please visit my news site at https://bigislandarrlnews.com.
Aloha es 73 de Russ (KH6JRM).

Popular posts from this blog

"Big Hat" Vertical Antenna. Post #1422.

Image
If you can't see this video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=xgOqP8uPEPc. Here's an interesting antenna design for radio amateurs exploring the 630 meter and 2200 meter amateur radio bands.  This classic antenna is basically a top loaded vertical designed for frequencies below the standard broadcast band (472 kHz and 137 kHz).  Even though this antenna is inefficient, a digital signal using the FT8 protocol should get you some contacts.  Good luck! 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). http://amateurradionewsinformation.com (Amateur Radio News & Information). http://www.southgarearc.org. https://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. Be sure to check the blog sidebars for more antenna and propagation ar
Read more

Antenna for Condo Backyard-Stealth. Post #1542.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=MXTYTytR56A. Don't let deed-restricted properties (HOA/CC&R) stop you from enjoying Amateur Radio.  In this video from AC2RJ, we see how some well-placed trees, a camera tripod, a telescoping fiberglass mast, and a "V" antenna can get you on the air without a lot of effort.  Add an antenna "tuner", a sturdy rig, such as the Yaesu FT-817, a microphone/cw key, and a simple grounding system, and you have a fully functional, nearly invisible ham station in your backyard. For the latest Amateur/Ham Radio news and information, please visit these web sites: 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://hamradiohawaii.wordpress.com. https://bigislandarrlnews.com. https://amateurradionewsinformation.com (Amateur Radio News &
Read more

G5RV Multi Band HF Dipole Antenna. Post #1555.

Image
If you can't see the video, please insert this title URL into your browser search box: https://www.youtube.com/watch?v=aeNHIQ_j4Dk This well-produced and richly illustrated tutorial on the classic G5RV HF Dipole Antenna was presented to the Brandon Amateur Radio Society in Brandon, Florida in 2017 by Bernie Huth (W4BGH).  Bernie does an excellent job of  explaining the pros and cons of this popular HF antenna from the late Louis Varney (G5RV).  Although Varney envisioned his design primarily as a 3/2 wavelength antenna for the 20 meter Amateur Radio band, radio amateurs have used the antenna for multiband use.  The G5RV is an excellent choice for the 20 meter band.  Performance on other HF Amateur Radio bands is good enough to qualify as stand alone HF antenna if you can only erect one HF antenna. 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 wee
Read more