biquad antenna digital TV

[Admin 2545]

,,,okay ,I will try to do it...!!!

[vova.gumerov 23]

благодарю!!

[bejonet 58]

On 12/17/2018 at 1:45 PM, Admin said:

Well, congratulations,,, !!!

,,,but with the antenna of the wire how many TV stations did you catch....???

with wire biquad antenna, i get 17 tv channel but only 13 with clear picture

[Admin 2545]

,,,so this means that the galvanized plate antenna is better...???

[bejonet 58]

yes... i am using that antenna until now.. placed on above ceiling

[Admin 2545]

,,,vova, these dimensions multiply them by a coefficient k = 0.8 for the average frequency of 730 MHz

 

[vova.gumerov 23]

благодарю!!

 

On 3/23/2019 at 9:20 AM, Admin said:

,,,Вова, эти размеры умножают их на коэффициент k = 0,8 для средней частоты 730 МГц

 

хорошо

благодарю

[vova.gumerov 23]

Привет, Админ!
Не могу приступить к строительству антенны из-за что нет металла нужной толщены 3-4мм имеется только 1мм.
Если изготовить из 1мм, как повлияет на графики КСВ?

 

Hi, Admin!
I can not start building the antenna because there is no metal of the required thickness of 3-4 mm, there is only 1 mm.
If you make from 1mm, how will the graphics of the CWS affect?

[Admin 2545]

,,,hello vova...!!!
,,,the thickness of the material does not affect  the characteristics of the antenna too much...!!!

,,,actually Bejo , used it so thick, like  ... !!!

[vova.gumerov 23]

Понял

[Admin 2545]

And this is Vova's biquad...

[vova.gumerov 23]

Спасибо, сверил размеры, пересчёт всё правильно!!!!

Thank you, checked the dimensions, recalculation is all right !!!!

[Admin 2545]

I think it would be best if you made the biquad antenna from the 4x16mm aluminum plate....!!!

[vova.gumerov 23]

согласен!!! Но где взять листовой алюминий такой толщины? Это проблема и я думал над ней!Поэтому до сих пор не сделал! Есть труба алюм. 8,10.12.16, 20мм Есть медная трубка разная, есть ал.и медь полосы , но нужна ведь широкая. Поэтому латунь 1мм

I agree!!! But where to get sheet aluminum of such thickness? This is a problem and I thought about it! Therefore, I have not done it yet! There is a pipe alum. 8.10.12.16, 20mm There is a different copper tube, there is an al.and copper strip, but you need a wide one. Therefore brass 1mm

[aurel 22]

I don't know what kind of aluminum you need BUT

if you can find old unused fridge ( big with large aluminum container ) then you have your aluminum sheet.

I was thinking about building this but i don't have a tools to cut such a shape  

[aurel 22]

Another thing , why is this so large 20 mm ?

I have somehere original (but with freakin iron) it is just 7 mm wide piece of metal not 20 mm?

[Admin 2545]

,,,,good, you do not have to cut anything, there is flat-band aluminum....

,,,biquad for 2,05GHz flat- band=5x10mm

[aurel 22]

what you mean ..no need to cut ?

jomy .. you said:

Quote

ova, these dimensions multiply them by a coefficient k = 0.8 for the average frequency of 730 MHz

so i think this antenna is for UHF TV ?

or i get it something very wrong ..again?

[aurel 22]

One  question more joMy

Original ..let say fabticated varsions have ..balun 300/75 ohm ..

but when i tried to pick up something i see no difference between antenna with 

baloon transformar and antenna without with direct coax cable connection..?

how is that possible?

[Admin 2545]

,,,well, but I do not believe that anymore....!!!

,,,watch and understand...!!!

[bejonet 58]

On 4/18/2019 at 5:53 PM, vova.gumerov said:

согласен!!! Но где взять листовой алюминий такой толщины? Это проблема и я думал над ней!Поэтому до сих пор не сделал! Есть труба алюм. 8,10.12.16, 20мм Есть медная трубка разная, есть ал.и медь полосы , но нужна ведь широкая. Поэтому латунь 1мм

I agree!!! But where to get sheet aluminum of such thickness? This is a problem and I thought about it! Therefore, I have not done it yet! There is a pipe alum. 8.10.12.16, 20mm There is a different copper tube, there is an al.and copper strip, but you need a wide one. Therefore brass 1mm

i have made it and using at indoor, material is 0,3-0,4 galvanize sheet, change plexiglass with Styrofoam, this is good TV antenna for me..

[aurel 22]

I think that  we have here big miss-understanding.

I was talking about biquad for UHF TV not for wifi-biquad ?

That is why i said that isee no difference in reception

between UHF-biquad  with  OR without baloon transformer

because i tested it :  as i say  I tested fabricated version with and without asimetric block.

Of course only difference in RX is when i used biquad WITH and WITHOUT reflector.

[Admin 2545]

", it does not matter if it is wifi or uhf, the impedance is the same...!!!

[vova.gumerov 23]

Администратор

[vova.gumerov 23]

Привет, вот что получилось у меня.
Работает в городе нормально, в лесу на даче проверю позже.

 

Hi, that's what happened with me.
It works in the city normally, in the forest at the dacha I will check later.