First of all, I want to thank many of you who have already taken advantage of our once per year 10% off Etsy sale on Challenger Antenna products. Remember, the sale ends this Sunday, August 30th, so if you're thinking of getting a handmade Challenger antenna or accessory, take a look today.

When I first introduced the Marauder Parasitic Array in February 2026, the Moxon-inspired portable antenna system, I never expected it to be one of my most downloaded antenna designs over the past six months. Not only has it exceeded my expectations, but the incredible number of successful deployments shared with me by builders has been outstanding.

One of the most valuable lessons I learned during my Silicon Valley high-tech career was the art of continuous improvement, also known as Kaizen, a Japanese business philosophy that many highly successful companies have adopted and implemented over many years. It teaches us that your work should never rest on its laurels but be continually evaluated to seek better and more productive results.

I am always looking to improve my antenna designs, no matter how small the enhancement. In the case of the Marauder Parasitic Array, I modified the design to make significant improvements offering +3.6 dBi gain, 21 dB front-to-back and a lower 24 degree takeoff angle. I was also able to maintain the radiation efficiency at 87%, which is excellent. Even if you have already homebrewed the original antenna, I made it easy to modify to the new design if desired.

If you do not have the time, ability or interest to build your own KJ6ER antenna, you can purchase a beautifully assembled handmade KJ6ER antenna system as well as many useful accessories on Etsy. More than 330 products have already been sold at the J-Systems Store on Etsy since June 2025 with over 80 perfect 5-star reviews from buyers.