3R5D Uda-Yagi (ribbon + metal boom) - Canadian TV, Computing and Home Theatre Forums

 
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post #1 of 8 (permalink) Old 2018-05-21, 08:36 AM Thread Starter
 
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3R5D Uda-Yagi (ribbon + metal boom)

https://ypylypenko.livejournal.com/17173.html



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post #2 of 8 (permalink) Old 2018-09-10, 02:58 AM Thread Starter
 
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long Yagi 52" boom, 9.5-14.5 dBi net gain, SWR<1.4

https://ypylypenko.livejournal.com/35552.html

completely ready-to-DIY or manufacturing model, including metal boom, in-store available materials (15x15 mm aluminum profile and 6 mm aluminum rods/pipes), practical folded dipole bending & mounting scheme




retail price of this Yagi is <$8 here

Last edited by Yurii Pylypenko; 2018-09-10 at 04:29 AM.
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post #3 of 8 (permalink) Old 2018-12-26, 06:37 AM Thread Starter
 
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post #4 of 8 (permalink) Old 2018-12-27, 03:32 AM Thread Starter
 
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Hi-VHF 5-El Yagi Optimized by K6STI

https://ypylypenko.livejournal.com/56492.html

I suggest to rescale or reoptimize model a few MHz up, it underperform on Ch13 (aperture is 1.17 m2 @ 216 MHz, while it is 1.4-1.5 m2 from 170 to 214 MHz.
It's not good to model rapid drop right inside working channel, especially taking into account manufacturing and balun influence
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post #5 of 8 (permalink) Old 2019-04-22, 02:33 AM Thread Starter
 
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post #6 of 8 (permalink) Old 2019-04-24, 02:31 AM Thread Starter
 
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4 versions of 6R12D Yagi. Black graph is "13-el Yagi" for reference perfomance

1) v5 - 470-620
2) v4 - 470-660
3) v3 - 470-700
4) v2 - 470-740
5) 2R10D 7Jul2013 (strip version from holl_ands model)
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post #7 of 8 (permalink) Old 2019-07-02, 05:36 AM Thread Starter
 
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Zinc-coated strip adaptation of [UHF 7-El FD-Yagi - Opt. by Nikiml 6 Jun 2013]




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post #8 of 8 (permalink) Old 2019-08-14, 04:57 AM Thread Starter
 
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High performance GSM/UMTS/LTE-900 Uda-Yagi with rear lobes <-6 dBi and SWR<1.5
https://ypylypenko.livejournal.com/81654.html

Can be rescaled to LTE-450/700/800
Main advantage is wideband rear lobe supression thanks to corner reflector.
Single rod designs have rear lobes up to 0..+3 dBi, which is good for LTE/HSPA modem, but not good for repeaters.
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