Classic radio! Very nice project. I think those 5w block resistors are wire wound, so they will be reactive at RF. Appears not to have mattered. Well done! Having the dipole up so high makes a big difference.
cool project, i only figured lately what to look for in power ampl, which was voltage recovery, the IRF610 5V/nS means it can tolerate up to 1Ghz before distortion mess the carrier sigal. also the probe is for stationary waves to make sure the are in the right places on the antenna
lol try running it any higher than say 50 MHz and you will see its a no go. Even at 50MHz you will have already problems matching it.The killer is the capacitances and the internal parasitic structure.
what is the channel width of this AM transmitter? More specificially, how would i make this transmitter but have some way to make it have Narrow and Wide Band transmit capabilities?
I'm having trouble getting the right voltage at the second stage. I used the 2n2222 at the oscillator but got it to work so the output is around 1V but I'm only getting around 1,4V at the output from the BD139. Any idea what could be wrong?
try changing the resistance of resistor R4 to less than 10k. Connect the BD139 emitter to ground. Connect the BD139 emitter to ground through a 30 Ohm resistor and a 100 nF capacitor.
@@Kositsyn83 Thx very much for replying. I tried putting 2x 100 ohm resistor and the 100nF capacitor from emitter to ground. I do get a sort of sine wave at 10 Volts but at 2,8 Mhz :/ Edit: I messed around with the values of the components again. I found that by decreasing the value of the 100nF capacitor, the frequency increases but the voltage decreases. Also I found the whole oscillator changes frequency, not just the output of the bd139.
Murat kardeşim kablo olmayabilirde anten olmadan olmaz eğer 27mhz yayın yapıyosaki cb halkbandı telsizdir türkiyede 4watt olarak sınırlandırılmıştır hava ve .konuma bağlı olarak .çin ne gider bu herzaman olmaz ben 4wattla elazığ erzurum samsun almanya ile konuşdum kardeşim anten olarak özmak 5/8 kullanıyodum uniden pc77 telsizle antenin boyu 6metre 81 santim 😊❤
Good device! But 14nS turn-off delay of the output mosfet is too many - the period of 27MHz is roughly 35nSec, so, 17nS is a half of the period of the RF signal (27MHz). I think, the mosfet will be too hot and effeciency will be bad, but when we use soft switching , the situation bay be not so bad. I mean class E amplifier - the same trnsistor but with 2 coils 2 capacitors and П-type matching network.
I fell in love with the tiny rf detector instead! im inspired to add coils on that and light up leds from the radiowaves of other radio stations! Lets make a crystal radio light up a row of leds!! free energy from radio waves!!
Fixed value pre-built inductors are easily available for values you have used. They have better tolerance compared to manual wire-wound coils. In commercial equipment, toroids and wire-wound inductors are used where availability is an issue or value is too odd to be found. Any how, your project, your wish!
The 2N 2222 transistor can be easily used for 27 Mhz frequency. It can even be used easily in electronic circuit applications up to 100 Mhz. The problem you have with resistors is actually related to the manufacturing types of resistors. If you use resistors that show inductance and capacitance due to the manufacturing method, these inductances and capacitances will unfortunately behave as if there are coils and capacitors in Series and parallel with the resistor. Their values are also related to the production processes of the circuit element. To solve this problem exactly, you have to search for 'suitable resistors for RF'. You should work with the smallest resistors of inductance and capacitance. This is how you should make your supply specifically. I wish conveniences.
Classic radio! Very nice project. I think those 5w block resistors are wire wound, so they will be reactive at RF. Appears not to have mattered. Well done! Having the dipole up so high makes a big difference.
thank you for giving an idea about an AM modulator using a mosfet because in my place it is difficult to find an OT transformer.
cool project, i only figured lately what to look for in power ampl, which was voltage recovery, the IRF610 5V/nS means it can tolerate up to 1Ghz before distortion mess the carrier sigal.
also the probe is for stationary waves to make sure the are in the right places on the antenna
lol try running it any higher than say 50 MHz and you will see its a no go. Even at 50MHz you will have already problems matching it.The killer is the capacitances and the internal parasitic structure.
Melestarikan Tekhnologi analog untuk komunikasi, Ketika dunia direset 0, kita pasti butuh lagi. Thx Bro.. Great Job!
Thank you very much am so happy I found this video so helpful cause I had hard time amplifying my 27mhz
Projeto excelente!
Vou tentar montar.
At last! I now hear your voice!
This is awesome friend! Do you have a schematic on a receiver? I'm trying to learn how both work to better trouble shoot them.
Your very own numbers station :-)
I remember listening to the original numbers stations on a shortwave radio as a kid in the early 70's. Cool memories, thanks.
Hello, can I use a irf640n mosfet for this project? It seems like it can work by datasheet but im not sure.
How many distance cower this circuit ???
Hai can I use 7mhz xtal insted of 27mhz
Конечно
what is the channel width of this AM transmitter? More specificially, how would i make this transmitter but have some way to make it have Narrow and Wide Band transmit capabilities?
Your very own numbers station !!!
sir please if you can make video about fm transmitter with high range for example 10km transmitter
hello friend, I would like to build this circuit but I don't have the 2sk3570 transistor, which transistor can I use in its place?
Любой из питания процессора материнской платы желательно старой материнской платы socet 775...am3...am4
@@grin4it ne alaka
Adam verici yapiyor
hi please is it possible to change out the crystal for shortwave frequencies? Would any other changes be needed for shortwave?
no, quartz is not suitable for short waves
Exelente trabalho amigo ? Só faltou o recptor 27mhz
What can i put instead irf610 equivalent please.
😮What was the unit of the capacitors, nano or pico?
I need the schemathic please
As modulator use TL431 ( better ) and why you not block RF point : source -drain in modulator ? ( get 10nF )
And matching T2 to T4 ( pi filter )
can 200m range possible with small Omni Antenna
What is the value of c6 i cant figure it out thankyou.
Is it useful to use the C 2690 transistor FM
I'm having trouble getting the right voltage at the second stage. I used the 2n2222 at the oscillator but got it to work so the output is around 1V but I'm only getting around 1,4V at the output from the BD139. Any idea what could be wrong?
try changing the resistance of resistor R4 to less than 10k. Connect the BD139 emitter to ground. Connect the BD139 emitter to ground through a 30 Ohm resistor and a 100 nF capacitor.
@@Kositsyn83 Thx very much for replying. I tried putting 2x 100 ohm resistor and the 100nF capacitor from emitter to ground. I do get a sort of sine wave at 10 Volts but at 2,8 Mhz :/
Edit: I messed around with the values of the components again. I found that by decreasing the value of the 100nF capacitor, the frequency increases but the voltage decreases. Also I found the whole oscillator changes frequency, not just the output of the bd139.
thnaks a lot for sharing your project,good job my friend
I am making a qrp ssb
greetings from Argentina,buenos aires
cool does it go sky wave after a few miles?
Qué frecuencia cubre ...550 a 16.00kz?
Buen proyecto, gracias por compartir. 🇨🇱
Good work
hi sir and bravo sir..
Artem can you build a high power FM transmitter ?
I did about 7 watts of power on the RD15HVF1 transistor in the power amplifier
@@Kositsyn83 can you put the circuit on here please Artem?
Artem bey kablo ile anten kullanmadan mesafe ne kadar gider malum anten yok ancak yapmak lazim
Murat kardeşim kablo olmayabilirde anten olmadan olmaz eğer 27mhz yayın yapıyosaki cb halkbandı telsizdir türkiyede 4watt olarak sınırlandırılmıştır hava ve .konuma bağlı olarak .çin ne gider bu herzaman olmaz ben 4wattla elazığ erzurum samsun almanya ile konuşdum kardeşim anten olarak özmak 5/8 kullanıyodum uniden pc77 telsizle antenin boyu 6metre 81 santim 😊❤
@@cfiratgokcimen3968 teşekkür ederim
Mogelijk 27 mhz transmitter???
Good device! But 14nS turn-off delay of the output mosfet is too many - the period of 27MHz is roughly 35nSec, so, 17nS is a half of the period of the RF signal (27MHz). I think, the mosfet will be too hot and effeciency will be bad, but when we use soft switching , the situation bay be not so bad. I mean class E amplifier - the same trnsistor but with 2 coils 2 capacitors and П-type matching network.
Terima kasih anda telah berbagi ilmu yang bermanfaat.
Love this project ❤
I fell in love with the tiny rf detector instead! im inspired to add coils on that and light up leds from the radiowaves of other radio stations!
Lets make a crystal radio light up a row of leds!! free energy from radio waves!!
I VERY LIKE YOUR VIDEO...IM FROM INDONESIA...THANK YOU...👍👍👍👍👍
Please share circuit digram
Fixed value pre-built inductors are easily available for values you have used. They have better tolerance compared to manual wire-wound coils. In commercial equipment, toroids and wire-wound inductors are used where availability is an issue or value is too odd to be found. Any how, your project, your wish!
Harascho!😂❤
Harika proje tebrikler
Can I use irf510 instead of irf610?
Probably. Look at the specs. Make sure you don’t drive the gate too high
The 2N 2222 transistor can be easily used for 27 Mhz frequency. It can even be used easily in electronic circuit applications up to 100 Mhz.
The problem you have with resistors is actually related to the manufacturing types of resistors. If you use resistors that show inductance and capacitance due to the manufacturing method, these inductances and capacitances will unfortunately behave as if there are coils and capacitors in Series and parallel with the resistor. Their values are also related to the production processes of the circuit element. To solve this problem exactly, you have to search for 'suitable resistors for RF'. You should work with the smallest resistors of inductance and capacitance. This is how you should make your supply specifically. I wish conveniences.
Sc2314 sc 2078 orjinal cb 27mhz telsiz sürücü ve çıkış transistörüdür 2n2222 2n2218 de çalışır tebrikler
Felicitaciones,muy bueno
Why 13.5V? Can you modify for 12V?
it will work fine at 12v too
The reason is the unloaded voltage of a 12V car battery.
Show us clearly the schematic uve drawn on the paper
Awesome 👏
good Job
Como puedo cubrir comercial band A.M.?.
KINDLY CLARIFY THE NUMBER OF FINAL TRANSISTOR IS IRF 610 OR TRF 610 PLEASE.
Irf610
Can this be used to make rc transmitter? And rc receiver?
No, this transmitter is designed for transmitting sound on CB. And it isn't a receiver
This is very interesting I will give a try thanks for publishing your work
Excellent tx
Give me the scematic ssb 27mhz.
gerou uma perfeita onda estacionária 300.000km/fre
300.000km/27.000=11.111111 antenna 😊
Cok tebrikler
Why don't you play music? Also the AM is distorted. Not perfect. Add negative feedback from RF output to an opamp in the audio section
It might be ok for CB radio
@@AdamV20 who knows... distorted modulations
👏👏👏👍
Да уж Артем и до англичан добрался .
Çok tebrikler
👍
Отлично! Спасибо большое 😎👍
In United States this is how we write 13,5 volts: 13.5 volts,we use a dot not a coma. Again thirteen point five volts 13.5 volts
nobody cares. You also use feet and inches where the entire world uses meters.
parabéns 😃
На какое расстояние работает? Так-то нормально, хоть и по-английски.)))
Can I use irfp260n instead of irf610?