After some rather strange questions from a potential builder of 50MHz Yagis, I was directed to DK7ZB's '50MHz Design Principles'. The information presented here is not wholly accurate and additionally, refers to statements of Lionel, VE7BQH in a way that the reader could be deviated from what really is important when designing Yagi antennas for low noise on any band.

These statements are common misconceptions relating to Yagis and beleived by many. Within the pages of DUBUS magazine, next issue (Q1, 2015) I will elaborate on why this is so and how these principles will not yield the best in 50MHz antenna performance.

A head of this article, I will give 2 examples of comparisons between antennas optimised for out-right gain, compared to my Low-Noise LFA Yagi. However, the comparison is not just on the 6m band, I have provided one on the 10m band too!

- 10m LFA comparison with TH6 by VK2GCC

- 6m comparison between 7el 50MHz WOS LFA and M2 7el JHV by VA3NCD - noise level change is significant. Lower gain LFA has Louder received signals due to reduced noise levels.

Subscribe to DUBUS and find out the facts!

Justin G0KSC