Topband: The Magic-T (link correction)

[Per Eklund]

We know you, good signals.
We copy you very well on 2x 400 beverage to 315 deg (NA).
Its one meter snow now under the beverages, but still works.
73 Per SM2LIY and on contest SM2M at SJ2W With 10 beverages, phased to NA and JA.
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Från: Topband <topband-bounces+sm2liy=hotmail.com at contesting.com> för VE6WZ_Steve <ve6wz at shaw.ca>
Skickat: den 9 februari 2021 23:34
Till: topband <topband at contesting.com>
Ämne: Topband: The Magic-T (link correction)

Today I uploaded a video to my RX series which explains the Magic-T combiner.
I have received a few emails asking me “how do I make the magic-T”? so I thought a video would be helpful.

I show the method for winding and building the Magic-T combiner and I explain how it is used in phased RX antennas.
The associated 2:1 impedance transformer is discussed, and I show the difference between an isolated and auto-transformer architecture.

I also discuss an error that can be made when building phased RX antennas if care is not taken to avoid an unintentional 180 phase shift at one of the elements, especially if using home-brew matching boxes.

YouTube video: https://youtu.be/_Bbt1IcC4bk <https://youtu.be/_Bbt1IcC4bk>

73, de steve ve6wz
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