{"id":40280,"date":"2019-10-18T06:46:39","date_gmt":"2019-10-18T10:46:39","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=40280"},"modified":"2019-10-18T06:46:39","modified_gmt":"2019-10-18T10:46:39","slug":"the-nooelec-balun-19-v2","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2019\/10\/the-nooelec-balun-19-v2\/","title":{"rendered":"The NooElec Balun 1:9 v2"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Many thanks to SWLing Post<\/em> contributor, Grayhat, who writes:<\/p>\n

Hi Thomas, was about to write you about some infos related to the NooElec balun when found that they now offer a v2 model:<\/p>\n

https:\/\/www.nooelec.com\/store\/balun-one-nine-v2-barebones.html<\/a><\/p>\n

The new balun has the same schematic as the previous one:<\/p>\n

\"\"<\/a><\/p>\n

But it is slightly bigger, has a better connector for the antenna wires and (according to NooElec) uses a transformer which allows the tiny balun to work more efficiently from 0 to around 70 MHz (check out the charts found in the downloads section of this link<\/a>).<\/p>\n

The transformer used, judging from the pics, is a CoilCraft WB9-1, whose data can be found here:<\/p>\n

https:\/\/www.coilcraft.com\/wb_th.cfm<\/a><\/p>\n

As I wrote the reason for this was the fact that a friend of mine reported that he used the (v1) balun with a Loop On Ground (LoG) Antenna !<\/p>\n

If you look at the schematic (above) you’ll notice that there’s a “jumper” labeled R1 (zero Ohm resistor). That tiny detail is important, see, leaving the balun as is, it will work fine with a longwire, one just connects contact #1 to the antenna and #2 to a counterpoise or ground system and there he goes, BUT there’s another way to use the balun, that is, CUT the “jumper” (ok, resistor) labeled “R1”. If you cut it, the balun will become a 9:1 isolation transformer and with such a modification will work just fine with the KK5JY “LoG”
\nantenna: http:\/\/www.kk5jy.net\/LoG\/<\/a><\/p>\n

According to what my friend reported, the balun works just fine, and although probably the ferrite core used in the V1 isn’t up to par with the original one used by KK5JY, the difference isn’t so huge.<\/p>\n

Oh, and I also suspect that the modified balun may work fine with the KK5JY simpler passive loop http:\/\/www.kk5jy.net\/rx-loop\/<\/a> which may be a nice antenna for restricted spaces!<\/p>\n

I think it may be of interest to people not knowing\/willing to wind their own baluns, at that point one may just need an enclosure to protect the balun and putting up a receive antenna will be as easy as 1-2-3.<\/p><\/blockquote>\n

Thank you for sharing this! Readers: Grayhat has been encouraging me to deploy a LoG antenna at my home and I do plan to do so in the coming months. Please comment if you use a LoG similar to the KK5JY model and what your results have been.<\/p>\n

Thank you again for the tip, Grayhat!<\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post contributor, Grayhat, who writes: Hi Thomas, was about to write you about some infos related to the NooElec balun when found that they now offer a v2 model: https:\/\/www.nooelec.com\/store\/balun-one-nine-v2-barebones.html The new balun has the same schematic as the previous one: But it is slightly bigger, has a better connector for […]<\/p>\n","protected":false},"author":15,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3607,627,836,3],"tags":[1643,5838,7880,8074,8075],"class_list":["post-40280","post","type-post","status-publish","format-standard","hentry","category-antennas","category-how-to","category-new-products","category-news","tag-antennas","tag-baluns","tag-grayhat","tag-loop-on-ground-antenna","tag-nooelec-balun-19-v2"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-atG","jetpack-related-posts":[{"id":49992,"url":"https:\/\/swling.com\/blog\/2021\/08\/grayhats-ncpl-noise-cancelling-passive-loop-antenna-tweak\/","url_meta":{"origin":40280,"position":0},"title":"Grayhat’s NCPL (Noise-Cancelling Passive Loop) antenna “tweak”","author":"Thomas","date":"August 15, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Grayhat, who shares the following modification he made to a Noise-Cancelling Passive Loop antenna last year. He's kindly allowed me to share his notes here, but apologized that at the time, he didn't take photos of the project along the way and recycled many\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/moebius.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/moebius.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/moebius.jpeg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":46679,"url":"https:\/\/swling.com\/blog\/2020\/12\/how-to-build-a-simple-linear-loaded-dipole-for-low-noise-shortwave-radio-listening\/","url_meta":{"origin":40280,"position":1},"title":"How to Build a Simple Linear-Loaded Dipole for Low-Noise Shortwave Radio Listening","author":"Thomas","date":"December 3, 2020","format":false,"excerpt":"Many thanks to SWLing Post contributor and RX antenna guru, Grayhat, for another excellent guest post focusing on compact, low-profile urban antennas: A linear loaded dipole for the SWL by Grayhat What follows is the description of an antenna which may allow to obtain good performances even in limited space,\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Map.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Map.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Map.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Map.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Map.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":53758,"url":"https:\/\/swling.com\/blog\/2022\/08\/small-unidirectional-loop-antenna-sula-part-2-construction-notes\/","url_meta":{"origin":40280,"position":2},"title":"Small Unidirectional Loop Antenna (SULA) Part 2: Construction Notes","author":"13dka","date":"August 21, 2022","format":false,"excerpt":"Many thanks to\u00a0SWLing Post\u00a0contributor extraordinaire,\u00a013dka, who brings us Part Two of a three part series about the new SULA homebrew antenna project. This first article describes this affordable antenna and demonstrates its unique reception properties. This second article focuses on construction notes. The third and final article will essentially be\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/08\/SDL-Bazinga_total_APT.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/08\/SDL-Bazinga_total_APT.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/08\/SDL-Bazinga_total_APT.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":43243,"url":"https:\/\/swling.com\/blog\/2020\/05\/build-an-sdr-station-and-balcony-antenna-farm-for-less-than-150-euros\/","url_meta":{"origin":40280,"position":3},"title":"Build an SDR station and balcony antenna farm for less than 150 Euros","author":"Thomas","date":"May 10, 2020","format":false,"excerpt":"UPDATE 11 May 2020: We recently learned that the MSI.SDR software defined radio dongle in the following post and tutorial is a clone of the SDRplay RSP1 SDR. We did not realize this when the post was published. 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