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How to Build a Reel Wind-up Random Wire Antenna for a 9:1 balun

Budget Ham Radio 1,274 4 days ago
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In this video we mount the 9:1 unun / balun matching transformer and build a reel wind-up random wire antenna using a chalk line. Either an internal or external tuner is required to make this random wire antenna resonant. 👍 *Support the Budget Ham Radio 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 👉 If you haven't watched the previous video that goes through the build steps for the 9:1 unun, here is the link: https://youtu.be/AUwMCJKpm4M?si=Yt62iYf7ZlfiQsI7 👉 How to build a CMC Common Mode Choke - https://youtu.be/ldls_9dKI9M?si=hvIyCiLfvesgpQYx This video is one in a series that shows how to build unun / baluns using different types of windings, cores, and capacitors for the matching transformer. After the step by step builds we do various measurements and field tests. 👉 For other how to videos featuring baluns, ununs, chokes, or filters - https://www.youtube.com/playlist?list=PLVGuFAwp8kOWsi1w5k5xniGaTXuA_fl6N 👉 For other how to videos on DIY homemade antennas - https://www.youtube.com/playlist?list=PLVGuFAwp8kOWRIgOz_qUMrdTA1wsWmja0 👉 For other videos on how to use the NanoVNA - https://www.youtube.com/playlist?list=PLVGuFAwp8kOWiuZ0zH4BMaP0w7tMB31Tz Thanks for watching and 73's. Jerry KM4ZKB 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* 100' Chalk Line - https://amzn.to/44kxWPG FT240-43 Amidon Toroid Core - https://amzn.to/3PeOaRz 16 AWG Insulated Wire, 6 colors, 13.2 ft ea. - https://amzn.to/43CY0Fw 16 AWG Magnet Wire, 4 oz - https://amzn.to/3ZSafdQ 4x4x2 PVC Junction Box - https://amzn.to/3DzPCLQ SO-239 Bulkhead Connectors - https://amzn.to/3DCdwqg 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 BNC to screw terminal connector - https://amzn.to/4gXiJaD SMA to BNC connector kit - https://amzn.to/4hhPmQb 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 *Source for Fair-Rite 2643251002 toroids* (No commission) https://www.digikey.com/en/products/detail/fair-rite-products-corp/2643251002/8594030?s=N4IgTCBcDa4GwBYDMYCsBGADJiBdAvkA *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 Thanks for watching! *Chapters* 00:00 Intro 00:24 Mount 9:1 toroid to backer board 15:01 Start build of reel wind-up random wire antenna 33:01 Random wire antennas are not resonant 33:49 Measure antenna and trim to length 37:47 Setup random wire antenna for field test 39:49 Measure and test antenna with NanoVNA 41:21 Using external tuner to tune random wire antenna for 80 meter band 46:04 40m band tune 47:48 20m band tune 50:36 17m band tune 52:04 15m band tune 53:16 12m band tune 54:08 10m band tune 56:36 Summary 56:53 Outro 👍 *Support the Budget Ham Radio channel* - https://buymeacoffee.com/budgethamradio 👍 Be sure to Like, Share, Comment, and Subscribe. #hf #hamradio #9:1 #unun #balun #antenna #howto #hfradio #randomwire #wireantenna #matching #transformers #transformer #reel

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