70 Watt Amplifier - Two Tone test

Just a quick followup from the previous video    • 70 Watt Amplifier Kit Build   Where I do the two tone test against the 70 W amplifier kit. Funnily enough just after I finished the video two more IRF530s gave their lives - next vid will definitely have the temperature protection in. Here's the video and site I mentioned with all the mods https://f5npv.wordpress.com/irf530-mo...    • F5NPV - 50w IRF530 MOSFET RF amplifier des...   (thank you for the tip Peter - for some reason your comments aren't appearing on the previous video) Schematic https://github.com/thaaraak/70W-Ampli... 0:00 Intro 1:08 Test Setup with Magnis as Exciter 3:01 Two tone with Magnis as Baseline 3:50 Magnis on Spectrum Analyzer 5:19 Two tones not quite Pure? 5:39 Two tone from the Amplifier 7:00 Amplifier on the Spectrum analyzer 8:44 Close up of Amplifier and other mods to do 11:31 Some tests with a 15 ohm resistor at R6 (see schematic link) 11:54 on the oscilloscope 12:23 and on the spectrum analyzer