QRP 1-30MHz Manual Days Antenna Tuner Kit

Schematic

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The Kit

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Specification

The QRP tuner can tune to the original non-resonant antenna by adding the appropriate inductance or capacitance so that the radio can work properly. Can be used as a band-pass filter, the emission can reduce unnecessary radiation outside the band, the cross-modulation and interference-band receiver can be reduced again.

Specification:

The kit includes:
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Build Instructions

Antenna Tuner Building Instructions.pdf

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References

http://m1kta-qrp.blogspot.com/2014/05/comments-on-chinese-atu.html

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Videos

These two videos are worth watching if you intend to contruct the kit.

The $20 eBay Antenna Tuner Kit Assembly and Review by
TinkerJohn, W5CYF Videos' published on Dec 29, 2013

Part 1. https://www.youtube.com/watch?v=jdFTwGv-CZY

Part 2. https://www.youtube.com/watch?v=hYeb-XN80FA

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Glenn Lyons VK4PK
glenn@LyonsComputer.com.au
Ver:gnl20190218 - pre published v0.9