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Previous video: Belka-DSP и большая антенна. Работа приёмника с полноразмерными антеннами и сравнение с трансивером.Next video: А поговорить? Радиостанции на одной микросхеме RDA1846, AT1846, BK4815, го$нофенги и тому подобное

А поговорить? Радиостанции на одной микросхеме RDA1846, AT1846, BK4815, го$нофенги и тому подобное

А поговорить? Радиостанции на одной микросхеме RDA1846, AT1846, BK4815, го$нофенги и тому подобное

Channel: Радиоканал с Алексеем Игониным

Belka-DSP и большая антенна. Работа приёмника с полноразмерными антеннами и сравнение с трансивером.

Belka-DSP и большая антенна. Работа приёмника с полноразмерными антеннами и сравнение с трансивером.

Channel: Радиоканал с Алексеем Игониным

Optim Satellite СиБи радиостанция. Подробный обзор, работа в эфире, измерения, внутренности.

Optim Satellite СиБи радиостанция. Подробный обзор, работа в эфире, измерения, внутренности.

Channel: Радиоканал с Алексеем Игониным

Icom R20 Приёмник - сканер до 3300 МГц. Двойной приём.

Icom R20 Приёмник - сканер до 3300 МГц. Двойной приём.

Channel: Радиоканал с Алексеем Игониным

hamradio

Amateur Radio (Hobby)

радиосвязь

радиолюбительство

радиолюбители

радиостанция

рация

transceiver

трансивер

связь

радиостанции

00:00:02

Hello everyone, I continue to restore the

00:00:05

radio station Harvest-1 This is an old

00:00:07

tube radio station produced in

00:00:10

1947, I have a memory version from 1949 and in

00:00:13

previous issues I will remind you I

00:00:14

restored the functionality of the receiver

00:00:16

and 3 radio stations, now it works and

00:00:18

Now I’ll work on the transmitter Judging by the

00:00:20

diagram of the transmitters of this radio station with two

00:00:23

cascade master a generator on a

00:00:25

6k7 lamp with quartz stabilization and a

00:00:28

power amplifier on a 6f6 lamp, later

00:00:30

the lamp began to be called 6 f6s, this is the

00:00:33

same thing, and of course there is also a

00:00:35

modulation cascade, a low-frequency

00:00:37

signal to which is supplied from a carbon

00:00:39

microphone in the tube. So, two

00:00:41

high-frequency cascades and a modulator, let me

00:00:43

remind you that This radio station has a

00:00:46

12-volt filament power supply and the lamps are all

00:00:49

six-volt, so the lamps in it are

00:00:51

connected in twos, the number of lamps

00:00:53

is even, they are all connected in two in

00:00:55

series so that they are powered by

00:00:57

the filament, and plus there is another 200 Volt, that’s

00:00:59

the voltage of course

00:01:01

[music]

00:01:08

so that’s the output In the transmitter cascade,

00:01:11

lamp 6f6 can be seen that it is lit, that its filament is

00:01:14

in order and with it the

00:01:16

modulator lamp, that

00:01:19

is, the low-frequency amplifier of

00:01:20

the transmitter, is connected in series with it. This means that it is also working, at

00:01:22

least for both of these lamps the filament is in

00:01:24

order and the master oscillator lamp of the

00:01:27

transmitter 6k7 is connected in series

00:01:29

with incandescence with one of the receiver lamps, since

00:01:32

we have a receiver Now everything is

00:01:33

operational, which means we can

00:01:34

conclude that based on the incandescence, the master oscillator of

00:01:36

the transmitter is also a lamp in order, which means the

00:01:39

incandescence of all three transmitter lamps is in

00:01:41

order. Maybe they have losses there

00:01:43

and missions, anything else incandescence They

00:01:45

definitely have a

00:01:49

relay installed for switching reception and transmission in this radio station, which is

00:01:51

controlled from a button from the push-to-talk button to the

00:01:54

handset. I got the handset without a connector. The

00:01:56

radio station has a

00:01:58

four-pin connector installed on the body and this connector

00:02:00

is designed to connect just

00:02:01

such a handset; a handset with a button; a button;

00:02:03

and with a lock on the full radio station

00:02:05

it can work not only like a regular

00:02:07

radio station in simplex, that is, either

00:02:09

receiving or transmitting, but also in duplex and

00:02:11

when we work in duplex so as not to

00:02:12

constantly hold the button, there is

00:02:14

a lock on the button that allows you to fix

00:02:16

the radio station in the emission mode at the same time

00:02:19

the receiver also remains turned on

00:02:21

since the receiver and transmitters are completely

00:02:22

independent two different circuits can

00:02:24

work in parallel different two antennas

00:02:26

so I didn’t have connectors and therefore

00:02:28

I installed four separate pin contacts on the wire on the handset

00:02:30

which

00:02:32

fit perfectly into a socket in four

00:02:35

sockets so let’s say four contacts

00:02:37

of the four-pin socket of the connector for

00:02:39

connecting the handset, the main thing is not to confuse them

00:02:41

Well, I marked them there with electrical tape for myself

00:02:43

So now the handset is connected, the

00:02:46

receiver output is perfectly audible on headphones, there

00:02:48

is a carbon microphone for

00:02:51

the transmitter to work, there is a gear switch button,

00:02:52

I press the button, you can hear

00:02:54

the relay clicking, now the radio station is

00:02:57

fed 12 volts from these 12 volts

00:02:59

powers the incandescence of all the lamps, and here is the

00:03:01

transmit-on relay on the front panel of

00:03:04

the radio station, there is an indication of

00:03:06

operating modes by lamps, a receiving lamp, a

00:03:09

transmit lamp, and a lamp for setting up the antenna,

00:03:11

here is the transmit reception, these are two neon

00:03:13

lamps that are switched on through 150 kohms

00:03:15

to the anode voltage giving the receiving

00:03:18

parts Accordingly, I apply an anode

00:03:20

voltage of 200 volts and we see that the

00:03:22

reception light is shining, it was also lit in previous

00:03:24

videos. I also lit when

00:03:26

the receiver was started. But I didn’t have

00:03:28

neon transmission lights and incandescent light bulbs for

00:03:31

setting up antennas. Now I

00:03:33

found them, installed them in their places and when

00:03:36

turning them on transmission buttons And now the

00:03:38

neon transmission lights will light up And

00:03:41

when we put the

00:03:43

high-frequency part of the transmitter into operation and

00:03:44

connect the antenna, we will also

00:03:47

probably see the glow of an incandescent light bulb

00:03:49

that shows the

00:03:51

antenna setting In general, to tune the antenna there

00:03:53

is a separate knob here, this time

00:03:54

you can hear how the receiver is making noise now, here are the

00:03:58

tubes

00:04:00

No, I have such interference here that it’s

00:04:03

already being picked up at the antenna terminals. Well, of course, there’s

00:04:06

a lot of all sorts of equipment turned on here,

00:04:07

so I try to press the transmit button, the

00:04:10

transmit lamp lights up, the reception goes out,

00:04:14

if we turn on the duplex mode, the

00:04:18

reception lamp will also stay on,

00:04:22

somehow it’s strong the reception

00:04:25

lamp starts to burn less brightly, the

00:04:27

reception lamp probably dimmers, the voltage probably drops

00:04:29

at the output of the power supply, the power supply has a

00:04:31

weak reception mode, now it has,

00:04:34

for example, 218 Volts, if I turn on the

00:04:36

gear, the voltage drops right up to

00:04:39

130 Volts, but for now I

00:04:41

don’t have another power supply. If anything is possible like this

00:04:43

add and there will also be 200 Volts on the transmission,

00:04:46

the main thing is then turn down the

00:04:48

receiving mode before switching Let's

00:04:51

see what is happening at high

00:04:54

frequency with this transmitter That is,

00:04:57

now the switching of the transmission reception is working, the light

00:04:59

bulbs are standing, the anode

00:05:01

voltage is supplied, the receiver is working,

00:05:03

we check the transmitter

00:05:05

now I have a malachite receiver here

00:05:08

let's listen to something on it,

00:05:10

first let's listen to the operation of the receiver in

00:05:14

the radio station there are two quartzes, one at a

00:05:16

frequency of 2,720, the other at a frequency of 264, these

00:05:20

quartzes are used both as Cana quartz

00:05:22

for the transmitter and as heterogeneous ones for

00:05:25

the receiver, and they can change

00:05:27

places, that is, in one case

00:05:28

radio stations operate at a frequency of 2,720, at

00:05:32

this time Quartz 2.264 is used as a local oscillator,

00:05:33

we switch to the

00:05:36

second channel,

00:05:38

2.264 is used as a master, that is, the radio station

00:05:41

operates at 2.264 And

00:05:43

Quartz 2,720 is used as a local oscillator, the

00:05:46

difference between them is equal to the frequency, that is, two

00:05:48

channels spaced apart friend at the

00:05:51

IF frequency, thanks to this, for two

00:05:53

channels only two quartz are used and

00:05:55

not four, the difference between these frequencies is

00:05:57

something like 456 kilohertz or something, they are 465 Well,

00:06:01

this is the IF here. In general, it

00:06:03

doesn’t matter in the duplex mode,

00:06:05

only one Quartz is used or one or the other

00:06:07

is used both as a master oscillator of

00:06:09

the transmitter and as one receiver. Therefore,

00:06:12

in duplex, the spacing is equal to the IF. Such a cunning

00:06:16

circuit is

00:06:17

now heard on the malachite receiver,

00:06:20

here you can see the local

00:06:22

oscillator carrier signal at a frequency of 2.264, and

00:06:26

I have it installed on malachite,

00:06:27

switching the channel

00:06:29

and carriers.

00:06:32

Because now as local oscillator

00:06:35

is used Quartz 2720 again

00:06:38

we return to two 264 let's

00:06:40

listen in

00:06:43

single sideband modulation to make it clearer

00:06:45

This tone signal

00:06:48

is a local oscillator receiver at a frequency of 2.264

00:06:51

minus 1 kilohertz and Let's switch the

00:06:55

channel on the radio station now Leader One

00:06:58

works on 2 720 let's try to set the

00:07:00

frequency 2 720 2 I’ll

00:07:05

dial 719 1 kilohertz lower so that

00:07:10

the tone can be heard, what’s wrong is the wrong place

00:07:15

[music]

00:07:16

we hear just fine the local oscillator

00:07:19

at a frequency of 2,720, we look at what’s wrong with the transmission,

00:07:23

if we now turn on the channel on which the

00:07:25

local oscillator frequency is 2,720, then the transmission

00:07:28

will be 2,264,

00:07:31

but if I switch channel, now we do

00:07:34

n’t see the local oscillator frequency here anymore

00:07:36

at 2,720, which means 1 2,264 and

00:07:39

the transmission will be 2,720 I turn on

00:07:43

the transmission, I can’t hear the carriers here, the carriers don’t

00:07:46

appear,

00:07:49

I switched the channel here, only one

00:07:51

can be heard, also the carrier 2720, not audible

00:07:54

Let’s look at 264

00:08:02

MHz, here’s the local

00:08:06

oscillator carrier I audibly

00:08:10

press the transmission of

00:08:12

the transmission there are no carriers during transmission

00:08:15

does not occur if at

00:08:17

least one master generated during the operation of the transmitter the

00:08:19

power amplifier did not work

00:08:21

the modulator did not work then we would have malachite

00:08:24

here on the antenna located

00:08:25

right next to the radio station, we would definitely see

00:08:27

the carrier if we see the work a

00:08:29

weak local oscillator that does not have an

00:08:32

antenna, we see nothing on this receiver, we

00:08:35

also accept the master oscillator of

00:08:36

the transmitter, especially since we would have seen the received

00:08:38

signal. But it’s not there, it’s clear that

00:08:41

the voltage sags, I can

00:08:42

increase it to 200 volts in the

00:08:46

transmit mode, now the same 200 volts and

00:08:48

on none from the channels we do not see

00:08:50

the carrier I hold the transmit button I switch the

00:08:53

channel first second The quartz switches

00:08:55

there is no carrier This indicates that something is

00:08:59

faulty with our transmitters What could

00:09:02

be faulty in the transmitter is

00:09:04

the radio station at first glance the lamps are all

00:09:06

three working transmitters even at least

00:09:08

two of us Now we need a signal

00:09:10

to appear at all and even one of the transmitting generators,

00:09:12

but even our masters do not work with the

00:09:15

same quartz that

00:09:16

definitely works in the receiver, that is, the quartz

00:09:18

is working, at first glance everything is fine.

00:09:19

I will now first visually inspect

00:09:22

the installation of this radio station and try to find

00:09:24

some the problem may be over time,

00:09:26

something somewhere has broken, it has collapsed over

00:09:28

time, and if we can’t find anything,

00:09:30

then of course we will check

00:09:33

the modes of the DC lamps for you

00:09:35

transmitters, it’s just longer and

00:09:38

more difficult to do it, you need to solder different

00:09:39

conductors, you don’t want to disturb the installation, the

00:09:41

original design of this

00:09:42

Therefore, I will first inspect the radio station

00:09:47

after a careful inspection of the structure of

00:09:50

the radio station in the lower part of the chassis in the

00:09:52

basement of the chassis where we actually did all the installation.

00:09:54

I discovered such a

00:09:56

problem in the radio station there is a biscuit

00:09:59

switch, a shaft from which extends

00:10:01

almost through the entire body

00:10:02

of the radio station; there are 5 biscuits on it and on each

00:10:05

goleta there are many more contacts, many

00:10:07

groups of independent ones, and on one of these

00:10:10

biscuits there are no contact plates

00:10:13

that move and close the contacts,

00:10:15

you can see that this plate was there and on

00:10:17

this biscuit there are other similar

00:10:19

plates that other contacts

00:10:20

connect, one plate is missing,

00:10:22

and all these plates are fastened with

00:10:25

rivets on small thin

00:10:27

rivets on two and it is clear that there are

00:10:30

two rivets left from this plate

00:10:31

that are missing, they stick out from the back

00:10:33

side of the biscuit, but this plate itself is not there

00:10:36

And this switch, this biscuit, is precisely

00:10:39

responsible for switching the quartz, the quartz

00:10:42

is connected to and the tyrants of the receiver to the

00:10:44

master transmitter are switched and

00:10:46

we see there is just one layer that

00:10:48

is responsible for connecting the quartz to the

00:10:50

transmitting generator of the transmitter; it

00:10:52

is missing; it is also clear that on the contacts

00:10:55

where the conductors are soldered to this biscuit,

00:10:58

some kind of wire is wound, that is,

00:11:00

apparently someone tried to eliminate this

00:11:01

malfunction; some contacts were simply

00:11:03

bridged with wire. I think that this

00:11:05

was probably done quite a long time ago,

00:11:07

but for some reason it didn’t bring any results, or

00:11:10

at least it doesn’t work for me now,

00:11:11

but for someone else, maybe

00:11:13

I worked there with this wire 50 years ago, it does

00:11:15

n’t work now, ideally, of course, it

00:11:17

would be nice to try to restore

00:11:19

I don’t have this plate for such a switch. I have

00:11:21

n’t had these biscuits for a long time. And I’ll try to

00:11:23

cut this plate myself from

00:11:26

some material and fix it

00:11:28

there. I found myself like this. A sheet of brass is

00:11:31

quite thin. It was some kind of screen

00:11:34

in the high-frequency design of a fairly

00:11:36

modern, of course, semiconductor

00:11:39

radio station. a soft flexible sheet of brass

00:11:41

from which I cut this very plate, I

00:11:47

extracted the remains of the rivets that

00:11:51

fastened the old plate in this

00:11:53

switch, the rivets have a diameter of 1.5

00:11:55

mm, of course,

00:11:59

I cannot now install other such rivets of one and a half millimeters

00:12:00

there to secure my

00:12:02

homemade plate like this how

00:12:04

to do this you will need to disassemble the

00:12:06

entire radio station and remove this

00:12:08

biscuit from it, unsolder all the conductors

00:12:10

that go to it, I don’t want to do this,

00:12:12

not that I’m too lazy. Although of course this is

00:12:15

so. I really don’t want to do this,

00:12:16

in the sense of wasting my time. But the most

00:12:18

the main thing is that all the elements here are very old

00:12:20

and if I do this,

00:12:22

it’s possible that from old age from the forty-

00:12:24

ninth year, I don’t know, 70-odd years have passed there

00:12:26

and it’s possible that having defended

00:12:29

some parts of the conductors from this

00:12:31

biscuit, starting to bend them to the side so that

00:12:33

they don’t prevented me from removing the biscuit, maybe

00:12:35

something else will fall off somewhere, some

00:12:37

resistor will fall apart, or some

00:12:38

conductor or something else will fall off

00:12:40

one after another and of course I won’t do that, I’ll

00:12:42

try to attach this plate

00:12:45

to the biscuit switch in some

00:12:47

other way

00:12:48

[music]

00:12:51

So I managed to cut out such a

00:12:53

small plate from a thin brass sheet

00:12:57

and this plate is

00:13:00

slightly different in shape from the original ones, but

00:13:02

it will perform its functions in exactly the same way.

00:13:04

I secured it to the

00:13:07

biscuit switch using two

00:13:09

screws. The screws were very difficult to find.

00:13:12

Usually in my life, screws are smaller than

00:13:13

M2. You don’t usually find M3. M2 and

00:13:16

a half is the smallest, but M2

00:13:18

can still be found, but here the M2 screws are not

00:13:20

removed there so that they would fall

00:13:22

into place, so to speak, I would have to drill out this

00:13:24

biscuit switch, which I also do

00:13:26

n’t want to do, because I'm afraid that from old age

00:13:28

something will burst and crack and I'll have to

00:13:30

restore much more, but

00:13:32

thanks to a friend for the sake of an amateur, I managed to

00:13:34

find one and a half screws and with these screws

00:13:38

I secured the plate, put it in place, it's

00:13:40

visually clear that the biscuit

00:13:42

switch switches perfectly now,

00:13:43

this plate moves along the

00:13:45

contacts and connects contacts in the

00:13:47

form in which it was before old

00:13:50

original plate

00:13:53

Well, the biscuit switch has been

00:13:55

restored Let's try to turn on the

00:13:57

radio station for transmission,

00:13:59

turned on the anode voltage, my

00:14:02

device controls 216 Volts, it

00:14:05

doesn’t matter, plus or minus there are 10 20 volts for

00:14:07

200 Volts anode nothing changes

00:14:09

now the channel on which Quartz 2

00:14:12

720 works as a local oscillator is turned on, so

00:14:15

we see its carrier on 2 720 I switch

00:14:18

to another channel And now Quartz for 720

00:14:21

will be used in the transmitter

00:14:22

Apparently the carriers are gone, you can

00:14:25

turn on the transmission on the PTT button,

00:14:30

I press transmission, the neon lights up, we see

00:14:33

what’s here

00:14:35

a signal appears quite powerful on the ns-meter and on

00:14:38

the spectrogram Oh, even there is modulation I

00:14:41

can hear myself

00:14:44

1 2 3 4 5 this is how the modulation of the

00:14:48

harvest radio station sounds with a flying powder

00:14:52

puppet microphone 1 2 3 4 5 check there

00:14:56

will be no harvest left the reception lo and behold

00:15:00

the transmitter works Well, at

00:15:02

least we hear something we don’t have

00:15:05

a light indicating the antenna setting

00:15:07

because we don’t have an antenna

00:15:08

the transmitter itself was now working without load

00:15:10

without an antenna the instructions for the radio station

00:15:12

stated output power of 0.5 0.7 W is

00:15:15

very small This is the power

00:15:16

so of course

00:15:18

definitely nothing will happen to this output stage on the lamp From the

00:15:20

fact that I turned it on without an antenna, it’s

00:15:22

all nonsense at such powers and with

00:15:24

such lamp technology. By the way,

00:15:25

pay attention when I turn on the

00:15:27

gear our 200 16 V drop to

00:15:31

173 Well, you can add here for

00:15:34

complete voltage 200 V on the power supply, the

00:15:38

output of the transmitter is designed to

00:15:40

connect an antenna AND a counterweight, and the

00:15:42

counterweight terminal does not

00:15:44

connect the counterweight to the radio body. That

00:15:47

is, we can say that the output is symmetrical; there are two terminals, two terminals are a

00:15:50

beam and a counterweight, and both of these terminals go to the

00:15:53

output matching device,

00:15:56

by the way, in the riometer there is a separate

00:15:58

small secondary winding for

00:16:00

connecting an incandescent light bulb, which

00:16:02

will actually show us

00:16:04

the resonance of the antenna, so without an antenna there

00:16:06

can be no resonance of the antenna and there is

00:16:07

no indication either. Let me

00:16:10

now, at least here in stationary

00:16:11

conditions, connect some two pieces of

00:16:13

wire in the instructions to the radio station

00:16:15

It is stated that a normal antenna is a

00:16:18

piece of wire 15 meters long and plus a

00:16:21

counterweight, but you can also use a

00:16:23

short wire 3 m long and the

00:16:25

radio station will also work on it,

00:16:27

well, the range will be greatly reduced, this is

00:16:29

not surprising. Well, we do

00:16:31

n’t do range tests right now, I just want to

00:16:33

connect antenna to see

00:16:34

whether the light bulb will light up and whether the antenna power matching

00:16:36

settings will work in the hydrometer.

00:16:40

Unfortunately, it will not be possible to measure in the normal way with a

00:16:41

modern power meter

00:16:43

since this matching

00:16:45

device is not designed to connect a

00:16:47

low-power load of 50 tons, after all,

00:16:49

the antenna is 3 meters long or 15 meters long

00:16:52

frequencies of 2 MHz, this is a very shortened

00:16:55

antenna, so the matching device

00:16:56

is designed only to work with a

00:16:59

shortened antenna. If we now

00:17:00

connect a 50-ohm load here through a KSM

00:17:03

power meter, it won’t

00:17:04

show anything because we simply don’t set the

00:17:06

output stage to 50 ohms, it’s 50 ohms. tons

00:17:08

can’t be configured So I’m trying to connect

00:17:10

two wires, I’ll just place them here

00:17:12

around the room and try

00:17:14

to tune in to them, just to at least make

00:17:16

sure that coordination is happening. The setup

00:17:20

connected two wires, probably one

00:17:23

5 meters long connected to

00:17:25

the antenna and meter terminals. Three second wires

00:17:28

are connected to the ground terminal or

00:17:30

a counterweight is generally very convenient; the

00:17:32

wire terminals are simply

00:17:33

slipped in and pressed. Let's

00:17:35

try turning on the anode

00:17:38

voltage in the receiving mode, here it is: 200

00:17:40

Volt malachite receiver. I am now

00:17:43

in low-input mode, that

00:17:45

is, the antenna is not high-impedance

00:17:47

sensitivity, so it is very low at

00:17:49

2 MHz only this

00:17:50

telescopic antenna works, it’s not visible in

00:17:53

any way from the protein receiver or like

00:17:55

malachite in the input mode, but in the mode it didn’t

00:17:58

say input, that is, there’s no antenna at all

00:18:00

at 2 MHz. That’s why I

00:18:02

can’t hear any interference

00:18:04

from the computers here now from any filming

00:18:06

equipment and you can only see two of your

00:18:08

own lesions But it doesn’t matter I turn on the

00:18:09

transmission on the radio station we see the

00:18:12

carrier from the transmitters even there I

00:18:14

can hear the voltage on the power supply 160 V

00:18:17

Let’s add,

00:18:21

I made 200 with a little Volt

00:18:23

I’ll fix the gear button on the tubes

00:18:26

so as not to hold with her hands and put it

00:18:28

here 1 2 3 check

00:18:33

five times two three hears me perfectly

00:18:36

So now the radio station is working on a

00:18:39

wire as an antenna, here there

00:18:41

is a

00:18:42

vorometer handle on it, matching the antenna,

00:18:44

I will now rotate it, look at the

00:18:46

readings from the malachite meter and adjust the light bulb

00:18:50

here here, perhaps, so that

00:18:52

this light bulb can be seen better, I’ll turn off

00:18:54

the cap of

00:18:56

this light bulb,

00:19:00

we can clearly see the maximum that from a meter it

00:19:03

immediately

00:19:04

goes off scale and the light bulb appears to have a

00:19:07

slight glow, I don’t know how much you can

00:19:09

see it because there are many

00:19:12

light sources here, the resonance is very sharp,

00:19:14

just a little bit I turn it the tuning knob

00:19:17

and this glow goes out, I’ll look in other

00:19:19

positions to see if there’s a repeat,

00:19:24

but in this position the

00:19:26

voltage is 203 Volts. I’ll add

00:19:29

a little, it’s just one voltage, then the brightness

00:19:31

of the glow increases noticeably at 200

00:19:33

50, it’s

00:19:36

already burning brightly, but we won’t torture

00:19:39

the radio station.

00:19:42

Even at 200.

00:19:56

I hope it will work. then check all

00:19:58

the radio stations are working, we can hear how

00:20:00

the receiver is making noise, especially if you hold the receiver

00:20:05

input terminal of the transmitter with your finger; there are separate

00:20:09

terminals for connecting the antenna and

00:20:10

counterweight of the receiver; separate

00:20:11

radio stations in duplex can work.

00:20:13

By the way, let's check the Duplex;

00:20:19

now the duplex mode is turned on; I

00:20:21

turn on the transmission and we see that the

00:20:24

radio station transmits at the same

00:20:26

frequency And at this time the receiver receives

00:20:29

noise I grab the input antenna by the terminal

00:20:33

the receiver receives at this time noise at a

00:20:36

frequency of 2.264 transmits to 2.720 this is the

00:20:39

Duplex we switch back to

00:20:43

simplex mode turning off the

00:20:45

transmission I reduce the voltage

00:20:49

the receiver is working the transmitter is working

00:20:52

it works, now you need to assemble it, close

00:20:54

the case with a casing, close the lower part of the

00:20:56

basement of the chassis, it’s not difficult,

00:20:59

most of the screws have been preserved and you can

00:21:01

use the radio station, there is

00:21:02

only one question left with the power supply for

00:21:05

this radio station, I have a converter former included in the kit.

00:21:09

Maybe I’ll try it somehow revive

00:21:11

bring to life Well, I would

00:21:12

still like to find some kind of alternative

00:21:14

power supply that does not make noise, acoustic ones, to

00:21:16

power it in the field and make

00:21:19

some kind of connection. Ideally, I would like to

00:21:21

contact it, for example, with ft 817, also in

00:21:24

amplitude modulation mode, distance

00:21:27

though I would like to connect

00:21:28

short antennas to it a few kilometers away, there are 10

00:21:31

meters of wire 817 through the tuner, too, and

00:21:34

at frequencies these are radio stations to communicate

00:21:35

so as not to disturb anyone during the daytime.

00:21:37

Such little power for short

00:21:40

antennas. I think that we will not

00:21:42

disturb anyone. If we carry out such

00:21:43

experiments because in the summer in the daytime

00:21:45

at such frequencies, communication is possible

00:21:47

over very short distances, this is some

00:21:49

tens of kilometers even

00:21:51

with normal ones. Well, maybe there are a hundred. And

00:21:54

with half a power and short

00:21:56

delays, it will be a miracle if we

00:21:59

communicate again for kilometers. So I think

00:22:01

today the radio station will be restored to working order.

00:22:03

finished when I find a

00:22:05

suitable power source

00:22:07

to power it in the field, then we’ll

00:22:09

check its operation with you and

00:22:12

see how it all went. How, with the help of

00:22:14

such a miracle radio station, workers of

00:22:17

state farms, collective farms, or whatever it was in the

00:22:20

50s, communicated from the fields with their

00:22:24

who they contacted there but in general it’s

00:22:26

interesting to see how it will all

00:22:28

work. I hope I can do it

00:22:29

because I managed to restore the radio station

00:22:31

and it was very easy because the

00:22:34

problems were very simple; it has a

00:22:37

faulty lamp; a faulty biscuit;

00:22:40

one in the switch; otherwise everything is fine

00:22:42

in general, it works more or less So I

00:22:44

think it will work and check it in the fields

00:22:45

Thank you for watching this video, as

00:22:47

always, I tell you to engage in

00:22:49

technical creativity for the sake of

00:22:50

amateurism and just use

00:22:52

radio communication For various purposes, watch

00:22:55

my videos subscribe to the channel

00:22:58

Alexey Igonin was here Bye everyone

00:23:02

[ music]

00:23:16

264 Well, won’t you get up

00:23:20

here? I’m just

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