Understanding RF Chokes for Antennas

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A simple explanation of what a RF Choke is for and how it works #hamradio #hamradioantenna #amateurradio

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Hey, Walt. This is the second I watched this video. The first time I was brand new and much of it went over my head. Seeing your swr meter without and with a choke really points out why you need a choke. This should be shown at all ham schools! Thanks again.

richiec
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Good video🇺🇸 There is a lot to learn with respect to antennas

mikeangelastro
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Great way to explain a RF choke with the KISS principal.

leekoenp
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FYI: Plumbing traps are Not made to keep water from coming up from the sewer. They are used to keep toxic sewer gasses from coming back
I enjoyed the video.
Thank You and 73,
JR

jrjr
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Helpful as always. I'm getting ready to build my first antenna, you are my go to source for information.

wyominglife
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Thank you, my friend. Regards from PY5MCB

renatobressan
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I'm a new general and this helps a lot! Thank you!

Goingtothedogpark
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Good job Walt. Tim is tops and had many conversations with him.

Philip-KAKOE
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Ive noticed the varying SWR on my G90 during transmit. Now I understand why and will be buying a 1:1 choke to prevent that. Thanks!

Blaculo
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Walt, great stuff, Ive been licenced years and chokes have always been talked about but to see the difference, well, thats amazing. keep it up

alanthomas
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I've been thinking about buying or building one of those 1:1 chokes. I bought several antennas from N9SAB and they're great. The past week I threw his Rugged 40-10 EFHW in a tree and it works great. The thing I didn't realize when buying this EFHW, is that it's already trimmed and tuned, REALLY? It's awesome!

Thanks Walt! Enjoy your summer!

gaptastic
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Great vid. Just a note, a successful EFHW system is tapped at the end where the voltage and current is zero. So a counterpoise is irrelivant in this case. On the other hand, a "random wire" antenna with a 9:1 balun... you do need a counterpoise because the wire is not and can not be any harmonic, including quarter or half wave of the operating frequencies.

jeff-
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Thanks Walt. Your presentation was fantastic. You didn’t “choke” at all.
Ha, sorry I couldn’t resist.

frankmccormick
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Thanks for another great video, your content and personality make radio fun!

Christofoos
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Another inspirimg piece of work. We just bought a 1:1 with the new ic7300 and the 100w TennTennas efhw. Will try it with and without. What you're saying is that since the feedline is choked off, we'll need the .05 counterpoise(?)..

airheadzradioadventures
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FYI. The P trap on plumbing fixtures is the keep sewer gas from venting through your drains, not water.

TheDesertRat
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Excellent explanation on the choke. Funny the LDG documentation says a 30' coax between the 1:1 and 9:1, but your cable looks to be < than around 10'. I guess the length doesn't matter as the whole concept of the choke is to block a frequency. Again, great video on how to put all this stuff together. The picture along with the explanation makes all the difference. Great job explaining!

keithsafford
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Thank You Walt for talong things the simple way from the user perspective. Great video. You got this fantastik ability to explain things the simple way without missing the important parts. Thank You so much for this, 73 from Sweden

carsten
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Thanks Walt, I have a choke on my end fed wire at home, but have never used in my portable ops. I'll get one and put in my go bag. 73, Norm, KD9HAV

normnpat
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Glad I saw your diagram with the ununs, I was confused with all the different ununs and baluns. Some youtubers say you need one type and then use another one. This is the first example of using two ununs on the one feed.
I’m still waiting for the 9:1 unun from Amazon, it seems to take an eternity. Yes I could make my own but I’m not really up to that. I’d like to start with commercial products before diving deeper, rather than flounder with something I made not working properly at the learning stage.

darylcheshire