70W Amplifier from eBay - Spinning my own Board

This video is a followup from my earlier video on the "70 Watt" amplifier from ebay https://www.youtube.com/watch?v=JgiakIxMjfI&t=85s In this video I show a board I had created using the circuit from that amplifier together with some great mods from F5NPV https://f5npv.wordpress.com/irf530-mosfet-amplifier/ The board schematic and gerber files are here https://github.com/thaaraak/70W-Amplifier The bill of materials is here - let me know if you have any questions on the source of any component https://github.com/thaaraak/70W-Amplifier/blob/main/70W-Amplifier.csv Here's a link to those ferrite tubes on aliexpress https://www.aliexpress.com/item/2251832605878483.html?spm=a2g0o.order_list.0.0.36281802yaPJiS&gatewayAdapt=4itemAdapt I do a shoutout to kitandparts in the video - no affiliation but they are a great source for all your toroid and binocular needs http://kitsandparts.com 0:00 Intro 0:40 Changes between my board and the original 3:15 Schematic walkthrough of the board 5:38 Walkthrough of the built up board 9:25 Input SWR testing 12:20 Testing CW through the amplifier 13:41 Look at the effectiveness of the LPF 14:34 Two tone test setup 15:12 Two tone on the oscilloscope 17:02 Two tone on the spectrum analyzer 20:46 Replacing the FT50-43 with Ferrite Tube 22:42 Replacing the FT50-43 with BN 43-7150 25:27 Wrap up (I didn't get to testing the RD16HHF1s - more to come)