Build your own 9:1 unun antenna on the cheap!

Building the popular 9:1 unun antenna based on the popular EARCHI antenna design. An antenna that works relatively well with an internal tuner for 40-6 meters.

A popular antenna for portable ham radio operations or even multi – band operation at home. Assembled this one for less than $20, but it can probably be done cheaper if you have existing parts/container.

Toroids can be found at hamfests, online retailers (Amazon, Palomar Engineers, eBay, etc), and many other sources. Plastic…

Build your own 9:1 unun antenna on the cheap!
Source: QRZ News
Link: Build your own 9:1 unun antenna on the cheap!