Build a random wire end fed antenna and make amazing contacts

 Random end-fed wire HF antennas are excellent choices for your next antenna project, provided you understand the need to match the high impedance of the wire to the low impedance of your transceiver.

The key to the success of this antenna is the use of a 9:1 balun to match radio to antenna.

In this video from Michael Martens (KB9VBR), we learn how to make this simple balun and use a few simple tuning aids.

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

Here are a few comments from Michael (KB9VBR):

Can a non resonant antenna be efficient? It sure can. I show you how to build a non resonant random wire antenna with a 9:1 transformer. FT-140 43 mix Ferrite Toroid: https://www.mouser.com/ProductDetail/... Toroid Core FT140-43 Ferrite: https://amzn.to/3WKPApC 18ga Enameled Magnet Wire: https://amzn.to/3WFhSBX 4 in. x 4 in. x 2 in. PVC Junction Box - Gray: https://www.homedepot.com/p/Carlon-4-... Homebrew Antenna Challenge:    • Amazing! We built antennas out of ran...   Random Wire end fed antenna resources: https://toroids.info/FT140-43.php https://sprott.physics.wisc.edu/techn... https://udel.edu/~mm/ham/randomWire/ https://m0ukd.com/homebrew/baluns-and... Like what you see? You can leave me a tip: https://www.paypal.me/kb9vbr KB9VBR VHF/UHF Antennas: http://www.jpole-antenna.com Become a patron! Unlock exclusive content at:   / kb9vbrantennas   Support Ham Radio Q&A by shopping at Amazon: http://amzn.to/2kO6LH7 Timestamp 00:00 Introduction 00:33 End Fed Antennas 01:22 Random wire antennas: long wire or end fed Zepp 03:11 Wire Lengths are important 04:09 Ferrite cores and wire 06:55 Building the 9:1 transformer 09:28 Installing the antenna 11:05 Testing and making contacts 15:12 Advantages and Disadvantages of non resonant antennas My Parks on the Air setup: Transceiver: https://amzn.to/3lmHoei Battery: https://amzn.to/3xBGgbv Tuner: https://amzn.to/2ZCNM9l Folding Table: https://amzn.to/3xFIp5Z Throw Weight: https://amzn.to/32QW2nB Video Production Equipment: Camera https://amzn.to/32UaXNX Lens https://amzn.to/31mmDrX Wireless Microphone: https://amzn.to/3xFVBb4 Microphone: https://amzn.to/3daoAdq GoPro: https://amzn.to/3pkmP30 Music by license: http://www.premiumbeats.com http://www.soundstripe.com As an Amazon Associate, I earn from qualifying purchases Contact Information: Questions, comments, or business inquiries may be directed to kb9vbr@jpole-antenna.com. If you wish for your product to be featured on my channel, please contact me. #hamradio #amateurradio #hamradiohowto #antenna #antennaproject #nonresonantantenna #randomwireantenna #endfedantenna #efhw #endfedhalfwave #balun #unun #9to1transformer

Chapters

Introduction

0:00

End Fed Antennas

0:33

Random wire antennas: long wire or end fed Zepp

1:22

Wire Lengths are important

3:11

Ferrite cores and wire

4:09

Building the 9:1 transformer

6:55

Installing the antenna

9:28

Testing and making contacts

11:05

Transcript

Follow along using the transcript.

KB9VBR Antennas

63.4K subscribers

Thanks for joining us today.

Aloha es 73 de Russ (KH6JRM).