AM Transmitter Kit
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- čas přidán 28. 02. 2022
- Well, I gave in and bought an AM transmitter kit. In this video I go over the transmitter and answer questions like, should you buy one, does it work well, is a kit the way to go? I also show you how to adjust the transmitter so that broadcasts the full AM frequency range.
- Věda a technologie
I have built this kit myself as well. It has fair quality, not too hi-fi though. Designer has added a summation amplifier to mix left and right audio channels. Also, he has provided jumpers to by-pass one or more stages. No more than a meter of range on any of medium wave band frequencies. Keep the coil in the middle of ferrite to get max inductance. He has used 46 guage litz wire which is fair enough for small power. It generates around 50 to 100 milli-volts carrier which is amplified to about 2 - 3 volts and modulated after single audio mixing and amplification stage. BTW, same designer had released a newer version of it later. If anyone wishes to build it, i suggest he/she build the newwer one. Regards!
Thank you for all that helpful info. Definitely seems like a good idea to get the new version.
Very good video, congratulations!
What is your opinion about the sound quality?
The distance is around one meter?
Thanks and 73!
The sound is decent. The range depends on the radio. On a modern portable radio I was able to get approximately 6 feet, whatever that is in meters. On some radios it is far less. Not high powered at all. I do find it very useful to have though.
Hi thanks for the video
I assembled mine the light comes on but no reception
Can't get it to work any ideas please?
Got it to work the antenna conection was bad works well now thanks you video helped me understand and build it
@@daveanderson3531 Glad to hear that and glad you got it working.
Reception? It isn't a receiver. It is a transmitter, sir. And same thing happened to me then I noticed that I forgot to add the jumpers and it worked then perfectly fine.
There is one way not mentioned in the video if you have an antique radio and want to play music from that era you can find big band music on the internet and play through the radio. 73
Absolutely. Anything you can connect with the appropriate audio output will work.
Where do I get the kit?
Here is the link: www.ebay.com/itm/133871155984?var=433321243610
How long transmit cgnal circuit
If sending to a decent newer radio, you may reach about 6 feet. Older tube radios are far less. I use it primarily to test radios in frequencies that local noise prevents me from receiving. I also use it when doing youtube videos to avoid copyright strikes.
I wouldn't mind building this if I can change the frequency to one of the ham bands. It would be a good project. 73
Someone more knowledgeable than I am could do that. Definitely would require some parts changing to make it ham compatible.
@@oldelectronicsfan5136 yes coils need to be tuned less windings and variable capacitors. I used to pick up short Wave on a broadcast band radio just by tuning the I F coils. There was not one radio safe with me around. The only radio I never messed with was the Atwater Kent Radio because it had short Wave bands on it from 1.6 MHz to 18 MHz.the radio was good at picking up broadcast band all over the USA and Canada and even Cuba.
73
This would have been useful at an old job where they played am radio in the shop. But rush is dead now so it's not necessary
You should check out Clay and Buck. You might like them.
@@oldelectronicsfan5136 no. I wanted to jam the am radio and play something not completely hateful, anti democratic, and racist
Looks more like a receiver to me .
Well that makes sense because it does have some of the elements of an AM receiver. It is only designed to transmit though.
Just a little modification and it will work fine as receiver
@@awaismushtaq5719 A interesting idea.