Sunday, February 6, 2022

DK7ZB Duoband Yagi for 2m/70cm by Kevern ZS1ABU


Kevern ZS1ABU writes:  I will post a few pictures of a Yagi we build a few years ago. It was build mainly to use for the Pears and SARL VHF/UHF Contests. We received many 1st and 2nd places using this antenna. Its cheap to build and all the hardware can be bought from Builders Warehouse, except the little standoffs which was made by Dieter ZS1DWH on his 3D printer. This was made from plans and examples on the well known website : https://www.qsl.net/dk7zb/Duoband/4+5_2m-70cm.htm





DK7ZB writes:  The 4-El.-Ultralight-Yagi for 2m can be used on 70cm with an SWR of 1,5 without any changes. The pattern and the currents of the Yagi are shown down. The Yagi has three forward lobes (according to the three current maxima in the 3/2-lambda-radiator) with 5,39dBd - 4,35dBd -5,39dBd gain. We can use this Yagi without any changes on 2m and 70cm.


For more information and diagrams, please visit the well known website of DK7ZB.  Here is the link:  https://www.qsl.net/dk7zb/start1.htm
and his amateur radio website at:  https://www.qsl.net/dk7zb/

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