biquad antenna digital TV

[bejonet 58]

i have made biquad antenna for TV, reference at biquad calculator, frequensi from 470-800Mhz and place in indoor it is working good but not really good, 

a question is, there are way to tunning this antenna for best result..

[Admin 2421]

,,, for a biquad with a band so wide I think a director should be attached
,,,with reflector and the thicker copper wire ..

[bejonet 58]

ok,, how to connect director and what material using between director and wire.

[Admin 2421]

,,,the director must be attached to an insulator...!!1

I will make such an antenna

[Admin 2421]

I have two variants, which you prefer ... ??

[bejonet 58]

10 hours ago, Admin said:

 

this one, please,,,

[Admin 2421]

,,,,good, I do not know if that's what you're happy with ...

[bejonet 58]

thanks, but not as I expected, digital tv (maybe 5-6) works at a frequency of 400-500 and most tv broadcasts are in the frequency of 470-799mhz.

that means for fbiquad antenna it is not possible to work at 400-800 frequencies?

[bejonet 58]

how about this,,,

 

[Admin 2421]

39 minutes ago, bejonet said:

thanks, but not as I expected, digital tv (maybe 5-6) works at a frequency of 400-500 and most tv broadcasts are in the frequency of 470-799mhz.

that means for fbiquad antenna it is not possible to work at 400-800 frequencies?

,,,not...!!!

[bejonet 58]

3 hours ago, Admin said:

,,,,good, I do not know if that's what you're happy with ...

ok, I will try this antenna, can you give me  a detail please,,,

[Admin 2421]

,,, I think it's a better option...0,5...0,7GHz(200MHz bandwidth)

[bejonet 58]

18 hours ago, Admin said:

,,, I think it's a better option...0,5...0,7GHz(200MHz bandwidth)

dimension and material for this antenna please,,,

[Admin 2421]

That's what you ask me...!!!
Material = Aluminum #4mm

Isolated Spacer= plexiglass 20x25,5x40mm

[bejonet 58]

use galvani sheet 4mm, how to connect the coax cable, i dont have flux for solder galvanis or maybe use bolt and nut, and pixelglass replaced with styrofoam it would be?

[Admin 2421]

22 minutes ago, bejonet said:

use galvani sheet 4mm, how to connect the coax cable, i dont have flux for solder galvanis or maybe use bolt and nut, and pixelglass replaced with styrofoam it would be?

 

,,,good...!!!!

,,,yes, it is possible...!!!

[bejonet 58]

[bejonet 58]

antenna test without reflector

i get 3 digital tv broadcast (same as biquad i use before)

17 analog tv broadcast, but more clear picture than my old wire biquad, some bad signal  for uhf 22-28 and uhf 52-60,

maybe there are another option for 300mhz bandwith? Thanks,,

[Admin 2421]

,,,missing director and reflector....!!!

[bejonet 58]

7 minutes ago, Admin said:

,,,missing director and reflector....!!!

No,,,, use director but without reflektor. 

Without director is it not working, maybe tomorrow i  try attach the reflector

Edited December 16, 2018 by bejonet

[bejonet 58]

Correction, i use 0.4mm galvanis sheet not 4mm

and today i adding reflector, indoor place, get 21 tv channel 19 clear picture. Thank,s admin...

[Admin 2421]

Well, congratulations,,, !!!

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

[vova.gumerov 22]

I welcome admin.Ane is there in your reserves the type of the same BiQuad only at above 700-770 MHz for digital. Material-0,8mm brass, galvanized from 0,5 to 1,5

[Admin 2421]

,,,hi buddy...!!!

,,, there is no such thing, but it can be calculated...!!!

[vova.gumerov 22]

hello admin calculate the antenna would be super! 706 and 754 MHz. The reception is difficult: railway forest, the tower closes the mountain! Now Hoverman is standing: good at night, freezes during the day.