Download "Balun 1:1. Изготовление простого симметрирующего трансформатора для антенны."

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Укороченная КВ антенна - диполь 2 х 3.7м на 7 МГц. Описание конструкции и радиосвязь с этой антенны.

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Самодельная простая антенна из подручных материалов. Изготовление аварийной антенны на случай ЧС.

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Channel: Радиоканал с Алексеем Игониным

balun

antenna

Hamradio

Amateur Radio (hobby)

Радиосвязь

Антенна

Балун

Трансформатор

Симметрирующий трансформатор

Радиолюбители

Радиолюбительство

Короткие волны

Радиотехника

Homebrew

00:00:02

told you how to make a

00:00:03

balun transformer for an

00:00:04

antenna, that is, a balloon, now I’ll tell you

00:00:07

how to make an even simpler version of

00:00:08

such a transformer and why do you

00:00:11

need a 7 3 6 times snout format balloon,

00:00:12

what else is it called? It is needed to

00:00:15

connect a symmetrical antenna that is,

00:00:16

dipoles to it, a symmetrical cable, that

00:00:19

is, coaxial, as I already showed in the video

00:00:21

about the simplest antenna made from

00:00:23

scrap materials,

00:00:24

the antenna can work even like baseball,

00:00:26

but it’s better that it still exists,

00:00:29

since without it, the cable used to

00:00:31

power the antenna will radiate the signal

00:00:34

of your transmitter and will receive

00:00:36

various signals, including interference

00:00:38

generated directly next to

00:00:40

your transceiver, for example from

00:00:41

voltage converters or

00:00:43

laptops, and

00:00:45

only the antenna should receive and transmit it; they cable; the

00:00:47

proposed option was made

00:00:50

on a ferrite ring and contains a winding

00:00:51

made of two wires for to make

00:00:54

this dish we will need the following

00:00:55

parts, of course a ferrite ring

00:00:58

magnetic permeability 2000 rings with

00:01:00

such permeability the most affordable

00:01:02

cheap

00:01:03

sizes it will be 32 by 16 by 8 but you can

00:01:06

use a ring of a different size

00:01:08

a little smaller or larger

00:01:09

coaxial connector of course with y 239

00:01:12

cheap Chinese connector fastening from the

00:01:15

connector to the housing there will be M3 screws and with

00:01:16

nuts and washers

00:01:17

as terminals there will be M6 screws with

00:01:20

nuts,

00:01:21

why are they screws, for example, such terminals, I

00:01:23

already spoke in the video about making

00:01:24

another ball on, but I will repeat this again, a

00:01:27

terminal with plastic lecho which

00:01:29

dielectric handles are less reliable

00:01:30

so how they can split or crack

00:01:32

from frost or from an impact when dropped, and

00:01:34

such plastic terminals are much less

00:01:36

convenient to screw in in the cold with frozen

00:01:38

or gloved hands; such

00:01:40

glue is difficult to connect antennas to; fabric made

00:01:42

of large-section wire;

00:01:44

therefore, I use an M6 screw with ordinary

00:01:46

nuts for fastening the case and Greeks

00:01:48

with wings to connect the

00:01:50

antenna wire, we will use a

00:01:51

plastic case with dimensions of 108 by 54 by 30; the

00:01:54

transformer windings will be made

00:01:56

of wire with a diameter of 0 9 millimeters with

00:01:59

such dimensions of the core and this

00:02:00

wire can safely

00:02:02

pass 100 watts of power through the cylinder to

00:02:04

prevent damage to the

00:02:05

wire insulation; the sharp edges of the ferrite ring

00:02:08

you need to sand off

00:02:09

and wrap the ring itself with insulating

00:02:10

tape before wrapping it around the

00:02:12

ring, we’ll also prepare it by cutting two

00:02:14

identical pieces of this wire, putting them

00:02:17

together and fixing them with short pieces of

00:02:18

cambric, so we’ll get a double

00:02:21

wire that we’ll wrap around the ring

00:02:24

so that the conductors in this

00:02:26

pair of wires do not diverge from each other

00:02:28

and so that at the same time the neighboring turns of the winding

00:02:30

are not close to each other, the number of

00:02:33

turns is 14, but the transformer is not a

00:02:35

resonant circuit, and it certainly doesn’t matter here

00:02:37

if there are 16 13 turns, then in general

00:02:40

nothing will change,

00:02:41

the transformer is ready, now install the

00:02:44

connector in the housing and terminals for this we drill holes like

00:02:46

these in the case 5

00:02:49

holes for the connector and a 239 socket

00:02:51

just enough for M6 screws we install an

00:02:53

ISU 239 connector and an M6 screw we connect

00:02:57

the transformer to the socket and terminals and

00:02:59

our balloon is almost ready, all that remains is

00:03:01

to fix the transformer in the case,

00:03:03

we could drill for this

00:03:05

additional holes and, for example,

00:03:07

attach the transformer with ties or something else,

00:03:09

but an extra hole reduces the

00:03:11

strength and moisture resistance of the case,

00:03:13

so we will fix the transformer with

00:03:15

this porous material,

00:03:16

just press it to the walls of the case, the

00:03:18

assembly is completed bolum is ready, let's

00:03:21

check its operation using a

00:03:23

load resistance transceiver of 50 he and SWR

00:03:26

load meters, unfortunately, I do

00:03:28

n’t have symmetrical loads, so I’ll use

00:03:29

asymmetrical ones with coaxial travel,

00:03:31

I think for an hour here in its range it won’t

00:03:34

make much difference, we also turn on the

00:03:36

transceiver in fm mode. in order for there to be

00:03:38

continuously carriers at the output,

00:03:40

we set the power to 22, first

00:03:43

we turn on the transmission, we

00:03:46

calibrate our meter, we measure the SWR as we see at the

00:03:50

family agent frequency, ours is very

00:03:52

insignificant, let's check it

00:03:54

at other frequencies, for example, at 1 and 8

00:03:57

megahertz, also to its insignificant

00:04:01

now Let's check for the reader 14 hertz as

00:04:05

we see the SWR and here it is also small,

00:04:09

let's also check at a frequency of 20 8

00:04:11

megahertz after completing the operation check,

00:04:14

fortunately let's also put the

00:04:16

power of 100 watts through the process, calibrate the SWR meter

00:04:19

after increasing the power,

00:04:20

measure k and we also see ours does not mean

00:04:23

Mika s. V.

00:04:24

and with such power, well, we

00:04:27

got this 7 3 6 times format,

00:04:30

unlike the other option we had

00:04:31

which I showed you earlier and this one

00:04:33

has a simpler design, a

00:04:35

transformer with only two windings and it is

00:04:37

very difficult to make a mistake in its manufacture.

00:04:39

such a housing is suitable for

00:04:41

short-term use

00:04:42

in the open air, for example, during

00:04:44

field trips, hiking, traveling, for

00:04:47

permanent work, for example, as part of a

00:04:49

home antenna, the housing, of course,

00:04:51

should be more durable and sealed,

00:04:53

make different antenna designs,

00:04:55

work with them on the air, watch my

00:04:57

video, like, subscribe to the

00:04:59

channel, subscribe to VKontakte group

00:05:00

bye everyone

Description:

При подключении симметричных антенн (диполь, Inverted-V) к не симметричным радиостанциям и приёмникам с помощью коаксиального кабеля желательно использовать симметрирующий трансформатор, называемый еще balun (BALancer - UNbalancer). Существует несколько вариантов схем такого трансформатора с коэффициентом трансформации 1 : 1. Самый простой вариант - это обмотка в два провода (или одним тонким коаксиальным кабелем) на ферритовом кольце. Об изготовлении такого балуна я и рассказываю в этом видео. Для помощи каналу и благодарностей: ЯндекДеньги: 410017381931812 Подписывайтесь на канал, не пропустите новые видеоролики. Группа ВКонтакте: https://vk.com/igoninalexey Instagram: https://www.facebook.com/unsupportedbrowser

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