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The 620-Alison as PDF

Introduction

Estimated DIY price: 0 to £2
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This DIY 620-Alison 12dB Yagi DVB-T antenna performs well
up to 20km from the transmitter.

Better than "One for all"
The “ONE for all” 40dB indoor amplified aerial model SV-9141
 was incapable of giving sufficient signal.

The 620-Alison Yagi antenna (aerial) delivered sufficient signal for
a perfect picture for our Nikkai DVB-T digital TV. All UHF
stations from 450Mhz to 850Mhz were captured.


620_Alison_aerial












Diagram for the 620-Alison DVB-T Aerial (millimeters)

Diagram of 620-Alison aerial (schematics)














Make the reflector, directors and dipole of 1.35mm copper wire (or similar gauge)


The 620-Alison dipole

















 Base Bar



620-Alison aerial base bar


Drill the 4 holes using a drill diameter of 1.5mm. Fix the corresponding reflector and directors in the holes.


Assembling the aerial

Installation
General: Place horizontally as the UHF waves are horizontally transmitted. Avoid nearby metal in the front of the antenna.

Indoor use is possible. Best result is obtained outside.


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DIY 620-Alison 12dB Yagi DVB-T antenna




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