It's two antennas in one! The power of The Dually end fed antenna system
The K4QCD Dually is two antennas wrapped up into one package. On one side you have an End Fed Half Wave with a 49:1 transformer. Flip it over and on the other side is an End Fed Random Wire antenna with a 9:1 transformer. The dual transformer concept is the best of both worlds. Out in the field you can go either way with the type of antenna you wish to deploy, the only difference is the length of wire that you hook up to it.
K4QCD Design https://www.k4qcd.com/
The Dually End Fed Antenna: https://www.etsy.com/listing/17238831...
BNTECHGO 20 Gauge Silicone wire spool 250 ft: https://amzn.to/3SQOPea
End Fed Antenna Wire length resources:
Non Resonant Antennas:
https://ve3ips.wordpress.com/2021/11/...
https://udel.edu/~mm/ham/randomWire/
Resonant Half Wave Antennas:
The formula for a 1/2 wave radiator: 468 / Frequency MHz = Length in Feet
https://calculator.academy/efhw-anten...
https://www.sota-antennas.com/efhw.php
Timestamp
00:00:00 K4QCD Dually End Fed Antenna
00:02:15 Dually antenna specs and features
00:03:50 Assembling the Antenna
00:05:21 End Fed Antenna Suggested Wire Lengths
00:07:53 The Dually on the Air
00:12:13 My Thoughts on the Dually End Fed Antenna
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