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Nano VNA

короткие волны

настройка приёмника

сопряжение контуров

00:00:01

china I'm setting up the first amplifier of the

00:00:04

intermediate garden and it's located

00:00:08

here here

00:00:12

m2 local oscillators 1 and 2

00:00:16

right now the receivers are hissing a little

00:00:23

pantera Alina

00:00:25

some marshmallow noise is coming

00:00:31

1 before we soldered the capacitor to the output of the local oscillator fish

00:00:38

of course and when we are for the punishers

00:00:42

coupling coil 2 local oscillators that is,

00:00:44

they turned it off,

00:00:48

I’ll make it as loud as possible on the saint, there’s generally silence, we’ll

00:00:52

still check for the presence of generation

00:00:55

using our device, we look at

00:00:59

the arrow, it doesn’t show anything

00:01:03

generation years, it doesn’t show anything, that

00:01:07

is, also generation and no, both local oscillators are

00:01:10

now turned off, now our

00:01:13

task is to

00:01:14

configure intermediate

00:01:16

frequency amplifier number one aid of the

00:01:19

sweeping frequency generator on the device Anna Nova

00:01:23

on

00:01:25

I our receivers turn on our device

00:01:28

[music]

00:01:32

zala that I have a calibration of

00:01:34

the device at 465 kilohertz

00:01:38

so we will now open it and

00:01:40

open

00:01:43

the display

00:01:45

all

00:01:46

I have it in the cinema world 3 recall 3

00:01:51

us 465

00:01:53

and hertz why did I take this calibration

00:01:56

because it is closest to the

00:01:59

purity of our first

00:02:01

intermediate frequency amplifier now

00:02:04

there we need to exit the

00:02:06

sweep frequency generator mode for this we go to the

00:02:09

display menu trace 1 and 1 appears here is the

00:02:14

blue line that we need 1 and 0

00:02:17

turn off two pressed once the yellow line

00:02:20

went out to the near mode display mode

00:02:24

format line went to the near mode

00:02:29

next what we do is to set the

00:02:32

measurement range, which means our frequency of

00:02:35

this intermediate frequency amplifier is

00:02:39

equal to

00:02:41

1715 kilohertz well let's put

00:02:46

another 700

00:02:48

herz put it on the device

00:02:51

press

00:02:54

false

00:02:56

further center

00:02:58

yu

00:03:01

here

00:03:02

herz so we set the scanning to 1700 kilohertz,

00:03:05

set the scanning to on,

00:03:10

let's make 500

00:03:13

irit of

00:03:16

the device one thousand seven hundred kilohertz and

00:03:19

scan 500 kilohertz now we

00:03:22

need to raise the gain, turn on the

00:03:27

display menu kyle sang div do 0

00:03:36

005

00:03:39

0005

00:03:41

may but multiply 1 1 here we have

00:03:44

ours line

00:03:46

put the cursor on

00:03:49

purity

00:03:51

1715

00:03:53

kilohertz, here we put the cursor on 1715

00:03:57

kilohertz, this purity is at the peak of

00:04:02

this curve, we can make this curve

00:04:06

a little higher, let's make the oldies display again,

00:04:13

and let's do it, for example, 0

00:04:18

003, here we have this curve increased in

00:04:22

size, we can build our

00:04:26

intermediate frequency amplifier here are our

00:04:29

capacitors that adjust the two

00:04:33

circuits

00:04:35

look at our device we are adjusting

00:04:39

we are trying to at least adjust very much it is

00:04:41

right in the middle we can

00:04:43

make sure that

00:04:44

if we change something we have

00:04:47

turned our curve has shifted

00:04:50

firstly to the right and secondly it has decreased

00:04:53

in size that is, the gain of the amplifier has

00:04:55

fallen, our task now is to build

00:04:59

the circuits so that the gain is maximum

00:05:02

and it is on this purity that

00:05:05

we adjust it,

00:05:10

well, to the side

00:05:13

to the side, well, the fashion went to the peak,

00:05:23

here is our amplifier now

00:05:25

you are

00:05:27

Ryan for a purity of

00:05:31

1715 kilohertz, here is its

00:05:34

amplitude-frequency characteristic

00:05:36

Well, now let’s try to use

00:05:39

this same amplifier for the

00:05:42

intermediate frequency signal of the generator to set up.

00:05:47

I’ve already connected the devices to board number

00:05:50

one, connected them through a

00:05:52

small capacitor to the input of our

00:05:55

amplifier, and connected the output of this amplifier

00:05:59

through the head with

00:06:02

our tube voltmeter device.

00:06:05

We turn on all our devices. let's put our

00:06:09

device back into signal

00:06:12

generator mode, the display is

00:06:17

false

00:06:21

and

00:06:23

w

00:06:25

in three,

00:06:27

press

00:06:31

and dial

00:06:34

that

00:06:36

1715

00:06:39

ella herz

00:06:42

I cost 1000 pattern 15 kilohertz 1715

00:06:46

kilohertz here we see that

00:06:49

someone is showing our device, our task is to

00:06:53

configure these circuits so that the gain

00:06:58

is our

00:07:00

capacitors are at their maximum, you will see the gain drops

00:07:04

somewhere here, we adjust the second circuit,

00:07:08

well, something like this is the maximum

00:07:12

gain, that is, now our

00:07:15

intermediate frequency amplifier is configured, the cultures are

00:07:19

tuned strictly to this frequency, which the

00:07:22

generator of this device gives us a signal

00:07:26

on on on on

00:07:30

hotels two method of setting up an

00:07:33

intermediate frequency amplifier using a

00:07:36

sweep frequency generator and using the

00:07:39

generator signal, then we need to check the

00:07:41

end-to-end path of our

00:07:44

intermediate frequency amplifiers,

00:07:46

we must apply some signal to the

00:07:50

first intermediate frequency amplifier

00:07:53

at its input, and

00:07:57

the signal is already from the output of the 2nd

00:07:59

intermediate frequency amplifier

00:08:02

output

00:08:06

one signal generator signal

00:08:08

this is the same thousand

00:08:11

115 kilohertz

00:08:14

here at

00:08:16

the output we will connect our device again but we will

00:08:21

connect it without this head and it

00:08:25

and the detector output are connected.

00:08:36

Before setting up the through channel we

00:08:39

need to check the purity of the

00:08:41

2nd local oscillator.

00:08:47

if it does not correspond to the one specified there

00:08:51

and the signal then we won’t get the through channel

00:08:54

frequency, we’ll also check it using the device

00:08:58

again,

00:09:00

connect it to output

00:09:04

1 of 2

00:09:08

devices

00:09:10

at the

00:09:11

recall river, and

00:09:15

so our device is now in

00:09:18

calibration wife at

00:09:20

450 5 kilohertz,

00:09:22

go to the iv play menu

00:09:25

format where barking we put purity and blues

00:09:30

center center we do

00:09:33

1250 this is our purity 2 local oscillators

00:09:38

encoding making

00:09:41

500

00:09:45

appeared 1 frequency of our local oscillator

00:09:50

thief on its top we have a local oscillator frequency of

00:09:55

1250 kilohertz it is

00:10:00

decided

00:10:02

you are not a signal

00:10:05

here it increases increases

00:10:07

increases increases increases

00:10:10

increases new interferes we find

00:10:14

the maximum

00:10:18

maximum one circuit has been configured, the second

00:10:21

circuit is being adjusted, we are already turning it,

00:10:25

and so it is lost, but it would have been

00:10:29

tuned well, I have a white maximum,

00:10:34

now we are adjusting the frequency of our second

00:10:37

local oscillator,

00:10:39

here it changes sharply, it

00:10:44

swerved right away, it is decided to turn it up a little, and then I twisted it

00:10:58

and just shifted it and

00:11:02

upset everything greatly, but comes

00:11:05

from

00:11:07

you fix

00:11:10

it will also check leave we need

00:11:12

screen

00:11:15

1 1 to build and so I put the screen on

00:11:19

this part of the receiver again connected all the

00:11:21

devices, and now I will turn on the devices and

00:11:23

see if the setting has changed or

00:11:26

not,

00:11:28

only the

00:11:30

local oscillator setting 2 can change, let's try to

00:11:33

tighten the core and we look at the lu coils

00:11:43

and how dramatically all this changes here,

00:11:48

like the fact that he is adjusting,

00:11:56

well, like this,

00:11:58

three of us, or

00:12:00

now let’s try instead of

00:12:03

his highly intelligent voltmeter to connect a

00:12:07

regular tester

00:12:11

of react

00:12:19

Ryan, we connect to the output we have poison plus

00:12:25

and minus to ground

00:12:28

that the device is also here 190

00:12:32

millivolts, so if we adjust,

00:12:36

for example,

00:12:41

1a

00:12:43

in the morning

00:12:46

and

00:12:47

142

00:12:50

twisted 190

00:12:56

but 97

00:13:01

196 to 97,

00:13:05

of course, very much adjusting

00:13:09

the tour is

00:13:13

already backlog

00:13:16

and it changes something like this, the

00:13:21

place of that high-fiery voltmeter

00:13:23

can be used by the tester as an ordinary

00:13:26

scientist, millivolt mode

00:13:31

eye and eye under the on top receiver from the local

00:13:35

oscillator circuit, which is located under

00:13:37

this screen,

00:13:38

we turn on our devices, we turn on our

00:13:42

device in dir mode,

00:13:46

we set the display resistance format to the middle, and

00:13:50

for a zone of 25 meters it will be 11.8

00:13:56

megahertz, we set enter

00:14:00

11

00:14:05

there we also set

00:14:07

the sensitivity display kyle kyle div

00:14:11

do 02

00:14:16

from We now have the device in ger mode, the

00:14:21

cursor is set to

00:14:24

11.8

00:14:26

megahertz, and we also have a scan

00:14:31

of 2 and 5, we will still make the

00:14:34

stimulus smaller we can let’s make it

00:14:39

one megahertz so that the curve is

00:14:41

flatter and so that we can more accurately

00:14:44

set the gap with the maxim

00:14:50

when the construction on the

00:14:58

other side

00:15:00

[music]

00:15:06

was going on

00:15:10

like this here a little

00:15:13

we see ours

00:15:15

and from the coil, in order to more accurately tune in

00:15:19

to the smaller one, I brought in and say, and here

00:15:22

we have our input coil

00:15:26

tuned to a purity of

00:15:30

as much as eight tenths

00:15:32

of a megahertz, and that is, this is the middle of the

00:15:37

short-wave 25-meter range what

00:15:41

we do next is

00:15:45

we switch our device

00:15:49

to the signal generator mode,

00:15:59

exit the

00:16:00

menu

00:16:02

of my stimuli and press w

00:16:06

fr

00:16:08

e

00:16:09

press

00:16:13

because

00:16:15

m reg

00:16:16

herz I already have the output of this device, here it is

00:16:20

below

00:16:22

the shadow,

00:16:24

that is, so that our signal goes to the

00:16:26

antenna, pull out the antenna because it

00:16:30

also has some - then capacitance and

00:16:32

inductance

00:16:34

should be included in the settings elements

00:16:40

as a device we have a flock of yarn

00:16:44

connected 11 8 it is here,

00:16:49

we also have 11 8 now we are tightening the

00:16:56

capacitance

00:16:59

one and in such a way to get the

00:17:02

maximum signal level of

00:17:07

65 meters,

00:17:10

here we have 25 meters,

00:17:14

well, let's see we twist it in the wrong

00:17:17

direction in the other direction

00:17:21

very precisely when the

00:17:28

maximum signal level

00:17:33

hour the input circuit is matched to the local oscillator circuit

00:17:40

than our device we turn off our our these

00:17:44

devices

00:17:45

we add the volume here you are

00:17:48

please here he plays on short

00:17:51

waves 25 meters the receiver is

00:17:55

set up and catches it is necessary Also take into account that the house is

00:18:01

large-panel and the walls are, of course, a

00:18:04

large screen;

00:18:06

you need to go to the window and there it will

00:18:08

catch well;

00:18:11

reception also depends, of course, on the

00:18:14

time of year on the time of day of many

00:18:18

different factors on short waves, but for

00:18:21

example they were tuned in this way

00:18:26

singing, we need to make sure

00:18:29

the frequency our local oscillator 1 is higher than the

00:18:33

frequency of the received signal, we turn on

00:18:36

our receiver, we turn on the device for a long time

00:18:41

[music]

00:18:42

with our receiver set to a

00:18:45

frequency of

00:18:46

11 point eight

00:18:49

megahertz, our local oscillator should be

00:18:54

set to the purity of which it is 1715

00:18:58

kilohertz more, that is, it should be

00:19:02

set to frequency of

00:19:03

13 as much as 515 megahertz, let's try

00:19:08

to determine its purity with this device, our

00:19:11

device is connected to the first local oscillators

00:19:14

through a small capacitor,

00:19:16

go to the display menu, format delay

00:19:20

again, go to the stimulus menu, center, here's the

00:19:24

center, let's take

00:19:28

agent 13 and

00:19:29

do a scan

00:19:33

at least

00:19:34

herz, now our curve and ours have appeared the peak

00:19:38

of the purity of our local oscillator, let's try to

00:19:41

reduce it in size so that you can

00:19:44

see its top to exit menu

00:19:46

display co l rocks div well, let's type

00:19:50

for example 10 thousand here is

00:19:56

Crimea and I our purities, that is, at

00:20:00

this point we can determine what

00:20:02

purity of our local oscillator we put

00:20:05

the cursor here

00:20:06

we have 13 and a half

00:20:09

megahertz here, we see that we have a frequency of

00:20:14

13 5 megahertz higher than the tuning frequency of

00:20:19

our receiver, so tuning a

00:20:23

shortwave receiver using a

00:20:26

device on nano we finished,

00:20:29

so we looked at

00:20:32

tuning a shortwave receiver

00:20:36

using such a device again on

00:20:40

I must say that the devices above the

00:20:42

universal one can be used as a

00:20:45

shooting gallery, one resonance indicator,

00:20:47

as a swing frequency generator, as a

00:20:52

signal generator

00:20:54

and as a frequency meter, that is, the device is very

00:20:57

universal,

00:20:58

small-sized, and therefore for everyone who does

00:21:02

not already have it, well, I would recommend buying

00:21:05

it and using it because in my

00:21:10

opinion, this is just a godsend for a

00:21:13

radio amateur

Description:

Показана настройка коротковолнового радиоприёмника с помощью прибора "Nano VNA"

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