Multi band end fed half wave(EFHW) for 80m-10m

EFHW_Diagram courtesy of G0KYA

I recently came across a design for a multi band end fed half wave antenna for 80m-10m by G0KYA link here. Essentially its an EFHW cut for 40m with a trap(110uH) and an additional 2 – 2.5m of wire at the end for 80m. I already had a 49:1 autotransformer / matching unit from RF Comms ebay shop. I mounted the wire in an inverted L configuration, a little fine tuning was needed but I ended up with an antenna that is usable on 80, 40, 20, 15 & 10 without an ATU and other band inbetween with an ATU.

SWR measurements:- 80m 1.7, 40m 1.2, 20m 1.6, 15m 1.8, 10m 1.9

I’ve had contacts in every continent with this antenna albeit on digi modes such as FT8.


Leave a Reply

Your email address will not be published. Required fields are marked *

I accept that my given data and my IP address is sent to a server in the USA only for the purpose of spam prevention through the Akismet program.More information on Akismet and GDPR.

This site uses Akismet to reduce spam. Learn how your comment data is processed.