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Admin

Antenna for digital TV

92 posts in this topic

,,, and the variant with cut corners...
 

 

Spoiler

235.jpg

 

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,,, and a variant proposed by the user "com666"...

screenshot_1290.jpg

screenshot_1291.jpg

 

292.jpg

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 I think I should test this mini-TV antenna...!!!

95.jpg

,,.from JM actualidades on YouTube...!!

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On 15.03.2020 at 13:41, Admin said:

,, по просьбе пользователя" vars-cat "я попытался смоделировать эту антенну с крыльями летучей мыши для полосы частот 470-820 МГц..

 

  Скрыть содержимое

screenshot_1231.jpg

 

 

  Скрыть содержимое

screenshot_1234.jpg

 

Your batwing is good! But I do not have enough sheet Al, can I shift up to 730? Why should I cover the entire range! Sizes will be smaller.

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Greetings group... I was given the schematic of an antenna that they say is the best in Europe at the moment, but I don't know what impedance this type of dipole has and if it will be as good as they say... could it be modeled and find out if it is as good?

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,,,hello  Edel, a simulation could be made, but there are still some dimensions missing from the vibrator...!!!

,,,also mark the angles of the reflector and the directors' arms...!!!

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Too bad... I owe you this, it's what I have on hand, maybe you want to try other types of vibrators, I've seen this one in similar models

membuat Driven antena PF 5000, tembus 100km - YouTube - 0-1-53.jpeg

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Ahhh wait I found something....the reflector is in the image 60 degrees and the directors is 6.70 degrees

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,,,you can show how the antenna is in real image..!!!

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,,, it can't be better than this, but with the second version of the vibrator...!!!

screenshot_130.png

,,,if you can, give me more constructive details on the first dipole version...!!!

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Toole ... that's what I have for now, I'll keep looking. The vibrator that sends you as a test is from the Antenna PF5000 and this balum that I had not seen before, but of this if I have no more details

PF5000.jpg

balun1.jpg

balun2.jpg

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Posted (edited)

On 22.08.2024 at 5:41 AM, Admin said:

,,, it can't be better than this, but with the second version of the vibrator...!!!

screenshot_130.png

,,,if you can, give me more constructive details on the first dipole version...!!!

This is an interesting and surprising design - Tuning directores positions process looks  terrible, so much elements and only 14dBi. @Admin, Your version of the biquaod was better.
Now we know that this is a dead end road and that it doesn't work.

Edited by eco32
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