How does a seemingly clean radio, with no spurious emissions still produce harmonics when transmitting into an antenna? What about two transmitters in close proximity - Let's find out what happens and why. Why Your Receiver Doesn't Work 👉 https://www.youtube.com/watch?v=RVRoEPB1swo 📋Equipment I use in this video (Amazon Affiliate) TinySA Ultra 👉 https://www.amazon.com/dp/B0BMPSSFTK?tag=hamradiodx-20 RF Adapter Kit 👉 https://www.amazon.com/dp/B079K65LHK?tag=hamradiodx-20 Attenuator 👉 https://www.amazon.com/dp/B07MZLVY9T?tag=hamradiodx-20 ⏱️Chapters⏱️ 0:00 Testing Radios for Harmonics 1:12 Clean As A Whistle 3:06 The test environment 4:48 Huh? 6:40 Even worse! 9:03 What's going on? 11:01 SUM and the Difference 💸As an Amazon Associate, I earn from qualifying purchases💸 📺 Watch the next video here 👉 https://www.youtube.com/channel/UCo_jX41l6nYfnrQuk0qsZFw ⬇️ Exclusive Deals ⬇️ 📖 20% off Ham Radio Prep Courses - Use Coupon HAMDX https://hamradioprep.com/ 💰 $15 OFF at Radioddity - http://radioddity.refr.cc/haydenvk7hh 💵 GET 10% OFF Messi & Paoloni Coax - Use Coupon: VK7HH https://messi.it/ 🚀 Support The Channel 🚀 💸 Patreon: https://www.patreon.com/hamradiodx 📺 YouTube Memberships: null 💲 PayPal Tip Jar: https://www.paypal.com/donate?hosted_button_id=Y8T86VP7G2KFS 🛒 Ham Radio on Amazon & eBay: https://geni.us/HamRadioDX 👕 Merch: null 🅰️ Amazon Store: https://www.amazon.com/shop/hamradiodx 📧 Email: vk7hh@hamradiodx.net Join our TOADs Community 👉 https://discord.gg/97tkMEc #HamRadio #AmateurRadio Music: YouTube Sound