I noticed that the 5 and 2 turn toroid is reversed on the board as compared to schematic, which is correct?

At least you got a schematic or manual. I never did.

What is the function of the switch and led ?

It's to tune your antenna. Move switch to the trx side, apply voice/cw, turn smaller knobs till the LED goes out, cease vouce/cw, flip switch back to ant side. VK3YE does a great demo on YouTube

Assembly instructions for zerone 1 to 30 mhz tuner?

Sorry dude, I got caught by this one too. Mine is still in pieces. No help in sight. I learned a lesson about some of the sellers on Amazon.

What is meant by a Q9 Type Interface?

The "Zerone" antenna tuner, when connected between a wire antenna and a radio, can help match the two over a range of about 9 to 1 (30 to 300 ohms). Search "Antenna Q" for more technical info on antenna circuit quality or Q Factor. The translator probably chose "interface" because the tuner acts as an interface between the radio and antenna.

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📻 Tune In, Stand Out! Your QRP adventure awaits!

DIY DELIGHT - Engage your creativity and technical skills with an easy-to-assemble kit.
TAILORED TUNING - Achieve optimal performance with a tuning range of 30-300 ohms.
UNLEASH YOUR SIGNAL - Experience seamless communication across 1-30 MHz with this versatile tuner kit.
POWER UP YOUR PASSION - Handle up to 15W of transmit power for robust QRP operations.
JOIN THE QRP REVOLUTION - Connect with fellow enthusiasts and elevate your HAM radio experience.

The 1-30 MHz Manual Antenna Tuner Kit is designed for HAM radio enthusiasts, offering a T-type topology network that supports a transmit power of 15W and a tuning range of 30-300 ohms. This DIY kit not only enhances communication efficiency but also provides a fun and engaging building experience.

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