Build a Better 49:1 UnUn for the EFHW antenna

How to build a better 49:1 UnUn / balun matching transformer to use with your End Fed Half Wave EFHW ham radio antenna. 👍 Support BudgetHamRadio channel - https://buymeacoffee.com/budgethamradio 👍 Be sure to Like, Share, Comment, and Subscribe. 👉 Like this video? For more videos similar to this, click here - https://youtube.com/@BudgetHamRadio?sub_confirmation=1 This video is one in a series that shows how to build a 49:1 unun / baluns using the different types of windings, cores, and capacitors for the matching transformer. After the step by step builds we do insertion loss tests and compare the efficiency to the other transformers. 👉 All my videos on how to build 49:1 matching transformers - https://www.youtube.com/playlist?list=PLVGuFAwp8kOXp5dnANeMdYzcSbxUSR8fU 👉 For my other how to videos featuring baluns, ununs, chokes, or filters - https://www.youtube.com/playlist?list=PLVGuFAwp8kOWsi1w5k5xniGaTXuA_fl6N 👉 For my other how to videos on DIY homemade antennas - https://www.youtube.com/playlist?list=PLVGuFAwp8kOWRIgOz_qUMrdTA1wsWmja0 👉 For my other videos on how to use the NanoVNA - https://www.youtube.com/playlist?list=PLVGuFAwp8kOWsi1w5k5xniGaTXuA_fl6N Thanks for watching and 73's. Jerry KM4ZKB *Source for TDK capacitors - Mouser Electronics (No commission)* https://www.mouser.com Mouser part # 810-CC45SL3FD101JYVN MFG Part No: CC45SL3FD101JYVNA Description: TDK D: 8.5mm 3kV 100pF S / Ceramic Disc Capacitors A list of links is provided below if you would like to purchase anything seen or mentioned in this video. If you buy through these links I will earn a small commission on each sale which will help to support the channel to provide more videos. It will not affect the price you pay. *Amazon Affiliate Links* 16 AWG Magnet Wire, 4 oz - https://amzn.to/3ZSafdQ 4x4x2 PVC Junction Box - https://amzn.to/3DzPCLQ FT240-43 Amidon Toroid Core (need 2) - https://amzn.to/3PeOaRz SO-239 Bulkhead Connectors - https://amzn.to/3DCdwqg BNC to screw terminal connector - https://amzn.to/4gXiJaD SMA to BNC connector kit - https://amzn.to/4hhPmQb NanoVNA-H4 - https://amzn.to/492qZTG SMA Male to SO239 UHF Female - https://amzn.to/3Z7d8a9 SMA Female to Female Barrel Connector - https://amzn.to/3ZmllIK Eco-worthy 20ah LiFePO4 - https://amzn.to/4egqRRH Eco-worthy 30ah LiFePO4 - https://amzn.to/4fEVscr Eco-worthy 50ah LiFePO4 - https://amzn.to/3YBOJcB Battery Charger 20ah - https://amzn.to/3AFj3Li (works with multiple battery types and sizes) Battery Power Meter Analyzer - https://amzn.to/4fWHT8C Antuner - Antenna Tuner Power SWR Meter - https://amzn.to/3NXq2Cn Goture 21 ft Carbon Fiber Pole - https://amzn.to/4hGZiDO BNTECHGO Silicone Wire - https://amzn.to/3CCqrYK Carabiner S-biner Clips - https://amzn.to/3O5rbI1 BNC Female to Dual Banana Female - https://amzn.to/3NZmT52 SO-239 PL-259 to BNC Male Adapter - https://amzn.to/3YU4BIG Mueller Clips, 10a - https://amzn.to/4elgThJ Male/Female Bullet Connectors - https://amzn.to/4hGW9DU Crimping Tool - https://amzn.to/3Z8L2eT Wire Stripper with crimper - https://amzn.to/4ep91vO Mirror Mount Jaw Clamp - https://amzn.to/3YVMlP6 SO-239 STUD MOUNT for Jaw Clamp - https://amzn.to/3Ci4ldH Rope Pulley - https://amzn.to/3O1b4eP Paracord - https://amzn.to/3O3vNP3 Wireless Microphone - https://amzn.to/3CJBcZd Thanks for watching! *Chapters* 00:00 Intro 00:21 Materials needed to build the better 49:1 balun 01:43 Start Winding the transformer core 16:46 Connect and solder on the tap 19:43 Trim the UnUn leads to length 20:32 Solder on the 100pf TDK capacitor 21:46 BNC breakout connector with SMA adapter 23:44 Connect 49:1 transformers back to back for testing 25:25 Use the NanoVNA to measure the insertion loss of the 49:1 UnUn 31:24 Review and compare test results of the tapped 49:1 transformer 35:46 Summary 36:07 Outro 👍 Support BudgetHamRadio channel - https://buymeacoffee.com/budgethamradio 👍 Be sure to Like, Share, Comment, and Subscribe. #balun #hf #hamradio #efhw #49:1 #hfradio #pota #antenna #howto