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NEØU EZ-J 160m Antenna Update (finally!) 

Suburban DXing
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Finally, after more than 2 years, here is the promised update to the NEØU EZ-J 160 meter antenna. I feel this is an interesting story so this Update is longer than the original video!
The original EZ-J video is here: • The NEØU EZ-J 160m "in...
The original EZ-L video is here: • The NE0U 160m EZ-L ant...
The EZ-L Update video is here: • NE0U EZ-L 160m antenna...
Good Lesson for Antennas in Trees video is here: • Good Lesson for Antenn...
If you would like a copy of the updated NEØU EZ-L article, please email me (WXØV) at my QRZ.com address.

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26 дек 2023

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Комментарии : 29   
@Tom-W7TMD
@Tom-W7TMD 5 месяцев назад
Very Interesting findings! Thanks for the update!
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Sorry it took 2 years, but better late than never, and now you know why! 😎 73! de WX0V
@JohnMcCoy
@JohnMcCoy 5 месяцев назад
Do you find that using The Smelly helps you sniff out that rare DX? (Seriously, though... I really enjoy your videos. Keep up the good work!)
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Nice. 😜 Actually, I use either the KK5JY LoG or a non-resonant antenna for RX...they smell better, too! 😎 Thanks for the humor and your kind words...73! de WX0V
@REKlaus
@REKlaus 5 месяцев назад
Thanks for the update. Very interesting how the SWR changes with temperature.. You would expect some expansion and contraction but not enough to make as big a swing as you are seeing.
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
It would be cool to find out what is causing it, to be sure. However, regardless of the cause, thankfully the R.E.D.S. solves the issue. 73! de WX0V
@jerrym1183
@jerrym1183 5 месяцев назад
The swr not changing from expansion/contraction of the radial wires, but is changing due to the conductivity of the earth ground underneath, i.e. in the middle of a summer drought the apparent earth ground is feet down below the surface, but on a dark wet December day after a long period of wet days before, the apparent ground is at or very near the surface, because of the wet soil conditions... , if you have to have ground radials, put at least 4 down, more if possible, and some of various lengths. With my two 125ft radials elevated 10 ft above ground, there is no variation due to moisture content ground ..... My BOG receive antenna affected by same type phenomenon....
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
@@jerrym1183 Yes, it could not be expansion/contraction of any of the wires...not 7 feet worth! 🙂 That said, your suggestion of adding ground radials sounds plausible. I may just see if I can as an experiment, but my room to do so is somewhat limited...thank you and 73! de WX0V
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
You know, this may not be it...why? The ground is usually frozen and snow-covered during the Winter months, as I am in MN. The past 2 seasons (2021-22 and 2022-23) have had plenty of snow and frozen ground during most of the 160m season. How could "wet soil" be in play when the ground is frozen and snow covered? That doesn't make sense, but please chime in if you read this...I am curious to get your input. Thank you!
@AnthonyJones-vk6xq
@AnthonyJones-vk6xq 5 месяцев назад
Interesting, although i wonder why you have not used a pulley up in the tree ? Shame i did not work you the last time i was in XX9 land on the lower bands, next time maybe. Thanks for all the time and effort you have put into the videos this last year, much appreciated, oh say HI to the dog and thank him for the FT8 qso !! Best 73.
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Excellent question on the pulley! The reason is, I originally wanted the wire to go over the targeted branch in an inverted-L configuration. That failed, and I got a J, but if I used a pulley it would be under it, and I could not assure separation between the two legs. By having the wire go over the branch at the apex, I have separation. Re: XX9, I decoded several passes of XX9D on 80m in 2019 and would have killed for a Q, but they could not hear any of me because of their high QRN. Yes, if you worked WX0V on FT8, it was definitely a dog...me! 😎 73! de WX0V
@AnthonyJones-vk6xq
@AnthonyJones-vk6xq 5 месяцев назад
@@SuburbanDXing True, the QRN in Hong Kong or Macau is terrible, even on 80m we struggled to work JA stations, on top band with a inverted L and receive loops it was hard work ! The best band was in my opinion 10m working JA, japanese stations are very disiplined, if i missed a full call in the pile-up and asked for example JA4L , only that station would reply, not the chaos you have to put up with the European stations with everyman and his dog calling. Have a happy new year and many thanks for the interesting content you have uploaded this lest year. Best 73.
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
@@AnthonyJones-vk6xq Totally agree...the JA ops are usually very well behaved...kudos to them. Thank you for the comment and 73! de WX0V
@davidhtims
@davidhtims 5 месяцев назад
Another way to connect the fishing line is the make half hitches multiple times in the line. We do that in phone work to pull a cable with mule tape
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Excellent suggestion! 73! de WX0V
@JayN4GO
@JayN4GO 5 месяцев назад
You crack me up man 😂
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
I'm assuming you're referring to the K-9 kommentary on FT8...sure wish I had created that cartoon...I love it. Ditto with the Geico ad...Shelia totally rules! 73! de WX0V
@Bikemen61
@Bikemen61 4 месяца назад
I believe that I figured out at the end of the video why you’re having SWR issues when temperature changes. I believe you’re making the J by routing the smelly wire around the top branch and NOT isolated hanging from an isolator or plastic insulating thing. The tree branch will act as a variable Capasitor and your J loop at that branch will act as an inductor. The tree branch will change value as temperature affects its water content traveling inside the tree branch. If you are able to route the cable from a hanging isolator I believe you will get a more dependable SWR. It will still vary a bit with the tree moving the J cable but not by much.
@SuburbanDXing
@SuburbanDXing 4 месяца назад
All this makes sense. However, I also have an inverted L, that uses the same Smelly wire, which is also wrapped around a tree branch, and this does not have the issues the J has. The SWR changes when Winter arrives and remains rather stable until Spring. The J has big swings (I just had to adjust the R.E.D.S. with this recent uptick in temps). I am not saying your statement is not correct, as it makes total sense (I even did a video covering this, also on this channel), but why is the J having the big shifts where the L isn't? That said, one day I may attempt to put an insulator up there...a little tricky, but I may try (i.e. it's a good suggestion). In the meantime, the J with the R.E.D.S. is working perfectly (worked 7Q6M and IS0HJQ just last night for 178 on Top Band). Thanks for your sage comment...it's appreciated. 73! de WX0V
@meggalavk3ktt
@meggalavk3ktt 5 месяцев назад
xt question is how to get an 80 ft tree in your back yard great video btw, thx for the support line idea's i will try them i know the struggle of putting antenna in trees. cheers
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Yes, I am quite lucky to have some tall trees...don't feel that way in the Fall when all those leaves come down, though! 🤪 73! de WX0V
@jerrym1183
@jerrym1183 5 месяцев назад
Interesting, the variability of the resonance with temperature, I too run an inverted L and with two radials, the inverted L bottom feed-point and my 2 radials are all above ground about 10 feet above ground and seldom ever does the resonant frequency shift, ft the resonant frequency shifted then a ground wire either got broke from a falling branch, or there is ice adhered to the radials. Once the ice goes away or I patch together the broken above ground radial, the resonant goes back to the original frequency of resonance with out issue. Perhaps what is happening is that your radials on the ground are falling victim to change of "resonance" due to the moisture in the ground, and/or leaves and twigs laying on the wires etc. I also have 4 BOG (beverage on ground) antennas running in different directions, and I have found to get back that "best" receive performance I have to seasonally get out there and clean off the leaves, lift the each BOG wire out of the summer weeds, etc, in other words "re-float" my beverage wires on the ground. By doing that has really added to the consistency of the BOG wire performance, noting, I have had these BOGs on going on 3 years now. So perhaps if you had 4/8/16/32 radials on the ground the overall consistency of the "ground" might be a bit more consistent. Again I never have had an issue with my resonant frequency with my inverted L with my 2 "tuned" above ground 120 foot radials, both cut to exactly the same resonant frequency, it just plays and plays and plays.... Just some thoughts, I do like your inverted J idea, the more vertical the better for sure
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Excellent insight...especially so since you're another Top Band op. I actually did "tune" my radials to no effect vis-a-vis the shifting SWR. I probably should have noted that in the video, but a very good suggestion nonetheless. Thanks again and 73! de WX0V
@JayN4GO
@JayN4GO 5 месяцев назад
I know you’re kinda stuck with the J sorta. Can you make the downward part of the element “J” and little farther away? Not sure it would make a difference. With a dog named meatball, anything is possible 😂
@SuburbanDXing
@SuburbanDXing 5 месяцев назад
Moving the short leg of the J would require a drone or a crane, which at that point, I would make it an L. Meatball is still irked he didn't work PR0T...he tried working him QRP...silly dog. 🐕 73! de WX0V
@newpatrick8838
@newpatrick8838 4 месяца назад
Could it be that the air temperature and or moister swings your earth resistance? Thanks for sharing your experience. 73's de Patrick - OT5Q
@SuburbanDXing
@SuburbanDXing 4 месяца назад
It could very well be, and I do not want to ignore that suggestion. That said, the majority of these changes take place when the ground is frozen and usually snow-covered. Perhaps it still affects it?...I don't know. The ambient air temperature clearly is affecting this...why is the big question. Thanks for your comment and 73! de WX0V
@Frank_K4FMH
@Frank_K4FMH 4 месяца назад
Good video! Thanks for your research. 73 de K4FMH
@SuburbanDXing
@SuburbanDXing 4 месяца назад
Thank you for the kind words...still unsure why the SWR fluctuates but the R.E.D.S. keeps things working (I just changed the length last week as this current cold snap arrived). 73! de WX0V
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