how to make radio AM | AM Radio Electronic DIY Kit | Assembly & RUN 

清楚的看到电路图是简体中文的，老古董了，上小学的时候就喜欢自己组装收音机，现在是老年人了。买来一大堆电子元器件开始焊接，安装调试好后听到喇叭发出的声音就会觉得满满的成就感。😊😊😊

One day, I'll see a video showing the correct way to align one of these Chinese radio kits. Goodness knows what all that fiddling with the slugs from about 10 minutes onwards was for, other than to misalign transformers that probably were best left alone. A signal generator is useful but not necessary as all alignment can be done on a "weak but stable" off-air signal. I've built several of these kits, including this particular model (and they've all worked well). ♥ Every Chinese kit I've built came with pre-aligned IF transformers. They were almost spot-on, and only needed a slight tweak when the set was up and running. If you've built the kit correctly, it should be receiving at least some signals without further alignment. If it doesn't, then check the wiring, look for solder bridges and dry joints, and check the circuit voltages before you go adjusting anything. The general rule: adjust coils at the low frequency end, and capacitors at the high. The trimmer capacitors are those little screws on the back of the main tuning capacitor. When the set is receiving signals, it's necessary to align the front end to obtain optimum sensitivity over the whole range. Tune the radio to a signal near the bottom of the band. Then slide the coil back and fourth on the ferrite rod to obtain best results. Then you do the same with a signal at the top end of the band: only, this time, the adjuster will be one of the trimmers on the back of the main tuning capacitor. One adjusts sensitivity, and that's the one to adjust. Then repeat the coil adjustment and, when no further improvement is obtained, secure the coil on the ferrite with a little wax or glue. Final step is to adjust dial calibration. Again, coil at the low end, capacitor at the top. This time, you need to adjust the oscillator coil (the can with the red slug) so that the dial markings are correct for a station of known frequency at the low end. Then repeat the procedure for a station at the top end, only this time, adjust the OTHER trimmer on the main tuning capacitor. Repeat a few times until calibration is correct (as close as it can be on a simple dial like these). THEN you can try a slight tweak to the IF transformers, though that probably won't make much difference. Happy listening! ☺♥

Cara merakit yang sangat bagus, didukung peralatan yang lengkap,, tahun 1990 saya merakit radio MW SW SUPER HETERODYNE...Merakit mengandalkan solder dan AVO METER ,,, Bongkar pasang bagian trafo Oscilator merk SUMIDA SIA

Not to brag or anything, but I cAmazing stunt. His daughter has the best manners. David your best performance is you raising a fine human being. All stunts you do are impressive. Following you for a long time now. The Best.hanged the lightbulb in my hallway while standing on a kitchen chair last week.

Já montei um rádio quando estudei no Instituto Universal Brasileiro Curso de Eletrônica, isto nos anos oitenta, passei muito tempo estudando pra poder ir recebendo as peças para concluir a montagem. Tudo isso por correspondência. Foi legal!

United States, Ohio to be specific. I doubt I’ll win the contest but it wouldn’t stop me from learning great tips and tricks as I always do from your channel. You are an inspiration for many. I assure you. God Bless and keep up the great work.

Isti tranzistor sam imao u vojsci,samo sam u umesto malih stavio dve brodske baterije bile su ogromne kao limenka pola litra jedna a 1,5 volti.Sta je imala sve Jna ex Yugoslavia❤

このAMラジオキット、中華製じゃないか😱 本格的な計測機器を用いて調整し、しっかり受信できていましたね。周波数帯が日本のAMラジオと同一みたいです。

I have also repaired such radios and I used to love listening to songs, even now I listen to radios from mobile apps.❤

Unfortunately nowadays it is very rare to hear the radio, Unfortunately nowadays it is very rare to hear the radio, Unfortunately nowadays it is very rare to hear the radio, Moreover, AM signals. But this video tutorial is very good and helpful for beginners who are learning

Old is gold ❤❤❤ it

Excellent. You have given me the confidence to get started on my kit. I am hoping the test points on final check will get me close I don't have a signal gen. You have been a big help. Subscribed.

Good job mr

As other posts have said, you're just twiddling stuff! The proper way to do it: Set the IFs to 455 kHz (or whatever they are.) If you can't adjust them with a 455 kHz source, leave them alone and hope they are adjusted properly already. Go the HF end of MW and adjust the trimmer slot on the variable cap that tunes the stations. There are 2 trimmers, use the one that tunes stations and adjust it to bring a station on the correct frequency on the HF end of the dial. Tune to LF end and adjust the red core on a station to bring it to the right place. Back to HF end and repeat HF procedure. Once calibration is correct adjust sensitivity by peaking signal strength on LF end by sliding coil on ferrite rod, and on HF end by adjusting the other trimmer capacitor on the main tuning cap.

покупал такой на алихе голубенький, лет пять назад...собрал, включил - он работает....ничего не крутил, не подбирал токи каскадов (хотя мерил - они с этими номиналами резисторов не в режиме) - НО РАБОТАЕТ...катушки не крутил - самые громкие станции укладываються в крутилку КПЕ и мне норм....

Beautiful video

When I was young, we had one weak AM rock and roll station (5000 Watts and 120 miles distant) that I always listened to and one local AM station that always came in very strong. I really only listened to those two stations. Had I known then, I would have just tuned the radio circuitry for the best sensitivity on the weak station with the IFs tuned to 455KHZ and left it at that. Would have also incorporated a tuned long wire outside antenna to inject more signal into the radio's front end, which is easy to do. Just make sure the outside antenna is lightning protected- I've seen many old radios that used outside antennas exclusively for reception with antenna coils burnt open from the antenna not being protected.

Project ini seolah mengulang kembali kenangan masa lalu..

I love it works and want to learn ❤❤❤

Kesukaan saya waktu kecil saya sering membongkar radio dan melihat isinya...

Good job to you 💯💯💯💯💯💯

Ceramic IF filters are for weaklings. And here is real superheterodyne hardcore! The dream of every true radio amateur.🤩😍🤗

Todo mundo 🌍🌎 critica y destruye, pero nadie enseña como hacerlo, buen trabajo 😊😊😊😊😊

Wow that was built quickly.. neat..

Well done 💯

My father's old Radio 😢❤

Super bro next FM radio board fitting please

In India also, I personally feel that we dont have AM, MW and SW ransmission.

I like the background musical tune. It's very cool.

Printed cricket best for beginners thanking you very much brother

Kerja bagus. Saya suka radio analog...

Good from Bangladesh ❤

Terima kasih buat lembaga pendidikan kejuruan Kartini. Di jln Muwardi Grogol jkrtbrt .barokah belajar selama 1 th bisa punya ketrampilan buat bekal sampai saat ini

Lamentablemente , ya no hay emisoras am , por lo menos aqui en chile...años atras , la radio am hacía furor. Hoy en dia, las pocas que quedan , son utilizadas por grupos evangélicos...se extraña aquella época...

És um grande artista parabéns pelo seu trabalho

Lebanon (Currently in U.S.)

New supporter friend,

I use to make transistor during 1978. Famous brand in India named Jerking

Que difícil es poder sintonizar algo hoy en día en la banda AM. Con toda la interferencia de los aparatos electrónicos que hay

Professionally , it is unacceptable to tune resonant oscillating circuits , regardless of whether they are intermediate frequency or heterodyne with a screwdriver , it must be made of non-magnetic material ! Greetings from Bulgaria !

Exente trabajo❤

Nostalgic ❤❤

Eu já tive um rádio desses 😊.

New at this! Was wondering about the bridging that was done near the end

Esto me recuerda que debo reparar varias radios antiguas de A.M.,saludos.-

I love the AM radio, but to make it is only one issue : how can I get the variable capacitor, IF, long coil and small transformers ?

Halo bos.bagai mana cara membuat relay sederhana dan saya suka...

Я думал радио петь песни будет, но работа хорошая, радио топ 👍

😊net pernah radio am persis kayak di video tsb,apa msih ada PCB+komponen2 tsb net pengen merakit lagi,kalo ada net mau beli+free ongkir 😮

Good job

Nostalgic ❤🧖

Devre güzel, bütün eski radyolarda bu devrenin bi benzeri var, fakat bu kadar iyi yakalayamıyorlar.

Love from srilanka

А что в Франции уже не делают свои приемники? АлиЭкспресс рулит?

nice but i want PCB radio world resiver AM FM And Sw bands along with Tv band

Good idea 👍💡

အော်စီလေတာဘူးအနီရောင်နှင့်IFဘူးအဝါ အဖြူ အနက်ဘူးအင်ပို့အောက်ပို့ပါသောတလိုင်းဆွဲရေဒီယို။

Ja montei no anos 80 e gostaria de me divertir novamente. Onde conseguir o kit ?

Oba eu quero aprender 😊

Excelente projeto.

Gosto desses kits. ótima montagem!

Nice.bhai

Input and output transformers and IF transformers for frequency alignments in olden days.

Wow nice idol😂🎉

Tunning of IF correctly is the most important part in this circuit

É bom prestar atenção sem barulho de som

Amazing👍

It's hard to find AM radio stations in my town.

Very nice

POSSUI VÁRIOS RADINHOS DESTES LANÇAMENTO DA SHARP NA COPA DE 1970. OS TRANSISTORES NA ÉPOCA ERAM DE GERMÂNIO ENCAPSULAMENTO DE ALUMÍNIO

잡음이 심해서 회로 선택을 바꿔야 좋을 것으로 보입니다

SUPER

Да уж. Всегда мечтал сделать радио на средних волнах, чтобы слушать китайцев.

setelah semua selesai dirakit seharusnya ada penjelasan secara tehnik tahap 1 yg hrs disetel yg mana dulu sampai tahap akhir tidak bisa hanya secara visual saja utk content 2 kedepannya saya rasa bisa dibuatkan vidio 2 seperti itu jadi lebih sempurna 👍👍👍👍👍

Pcb available?

Itne sare upkaran kit ke sath me aate hai kya.

Good very good 👏👏🌹🍀🍀OFlraq🇮🇶

super video

nice

Nice

Circuito absoleto não existe mais rádio AM aqui no Brasil!

good

Właśnie kupiłem i czeka zestaw na złożenie. Zamierzam zrobić tam modyfikacje, żeby radio było energooszczędne 3mA max na minimum głośności i odbiór krajowej radiostacji na falach długich (LW).

Woooówooooo fantastic 😍

Very nice 👌

Bro where can i get this

Consertei estes tipos de rádios nos anos 70 e 80, como conseguir estes kits para montagem?

how to make an inverter 12v dc to 45 v dc ct for an amplifier for the car 🙏

Plateforme disposant schéma pour un appareil électronique.

FM séria melhor , aqui na minha cidade desativaram todas as AM .

What is the purpose of this video. I was hoping to learn something but I got nothing. Why did he measure current between the various test points? What was the procedure used for alignment?

j'ai vu ce kit sur Aliexpress pour 3€×frais de port compris

Pcb कहा मिलेगा : good video

Just to make a note> this radio des not work fromthe first attempt. On needs to adjust some resitror values to match current limits specified in the schematic as well as make sure it does ot oscillate which actually means adjusting one uinspecified capacitor, and adjusting the range is not straightforeward nor is described in the asemvbly instructions. If zpou get to to work you are an expert and you have a good equipment.

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Esto no es inteligencia es genialidad, la inteligencia y la genialidad son cosas distintas, después de la inteligencia viene la genialidad, alguien puede ser muy inteligente, pero la genialidad es la genialidad y no la supera, gracias tesla y demás inventores genios los creadores del pcb del transistor de los resistores capacitores etc etc la genialidad es la impulsora del mundo moderno y la tecnología, se piensa que la inteligencia lo es todo, pero la genialidad es el futuro

我上学的时候买过套件，焊接组装后不懂如何调试 失败了

هذا مجرد تجميع لا غير لا ينم عن اي مهارات.. كنت اضن انك سوف تقوم بصناعة راديو من الصفر وتقوم بشرح ذلك

The situation in the UK , is that most broadcasters have turned off their AM medium waveband transmitters .... so you might think your radio no longer works ............. DAVE™🛑