Build your own 2 watt 5 mile range FM transmitter Your own Radio Station,2N4427.
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- Опубликовано: 10 сен 2024
- In this video I show you how to build a 2 watt FM transmitter.
You can buy our 1 mile range small professional UHF transmitter from : www.bug-transmitter.com
This video is for educational use only.
Please check your local licensing laws concerning the legalities of using FM transmitters and when using one please run it into a dummy load and NOT into an antenna.
Parts List
Transistors X3
2 x PN3569
2 x 2N4427/Clone
Variable tuning capacitor x 2
Vintage marconi variable air capacitor measuring 5pF To 40pF
Panasonic 6mm Trimmer Capacitor 6- 50pF ,Genuine high quality by Panasonic, Japan.Part number ECR-HAO50G81
6-50pF
KA2284 Audio Level Indicator Power Level Indicator x 2
Resistors x 7
180ohm
2.2k
22k x 2
39k
47k x 2
Ceramic capacitors x 17
10pf
20pf x 5
33pf
50pf
1nf x 6
100nf x 3
Electrolytic capacitors x 3
220uf
4.7uf x 2
Coils x 6
3 turn X3
5 turn
6 turn
7 turn
BNC Panel Mount Socket Connector 50 Ohm
To-39 heatsink
Led x 2
Schottky diodes
BAT42 x 2
Micro choke x 2
100uH axial
SMT DC Power Square Socket Connector
5 x 2.1mm x 5.5mm
Fibre Glass Copper Clad PCB 100x160mm Double Sided
I cut to size
Common Mode Choke
2MH 40mOhm 2A Coil Wire Wrap Toroid Inductor Common Mode Choke
SMD 3.5mm audio socket
Have fun :)
30 Years ago I built a much smaller Stereo version of one of these with around 800mtr Range.
24/7 John Denver was playing from a Multi Disc Pioneer CD Player.
I tricked Everybody in the Local Area for Months that their was a dedicated FM John Denver Radio Station.
Thank you for another fantastic video. Been following you for years.
5 mile range is not enough mate. But a 50 mile rage would be very good.👍 😊Thanks for sharing your experience and knowledge with me.😊
Not legal in the USA. Chances of getting caught are slim but the consequences are quite severe. (minimum of $10,000)
That looks a great circuit. I built your last FM transmitter and it got out miles on a fishing rod Dipole lol. although just a length of wire off the board worked almost as well. Coax loss I bet. Got and of them spare MOD variable capacitors?
Back again......been a long time tho ..
Are you the famous "Dazaro3"? Your voice sounds like him.
Yes that's me 😊
@@dazaro3 You're awesome, my first FM transmitter circuits that I made was motivated by one video of your channel.
Greetings from Argentina. 🇦🇷🙋🏻♂️
How do u make the device that mesures the transmitter power?
Also why does the amplifier have to be in multiple stages?
were can I get all these compents
Where PLL synthesizer?
Looks like there's NO encoder for Stereo! Schematic 5:36
such a lovely build dazro you did well getting that much drive on a clone of the 4427 the original philips ones are better your 5w build guessing you used a 2sc1947 motorola or some MRF237 nice drivers 😊
You got it right! Lol it's a genuine MRF237
@@dazaro3 haha i had a feeling nice 👍
??? PN3569 Max MHz = 60MHz ???
Why stop there? Why not use a chisel to point out individual sections?
You put 2 vu-meters on a mono transmitter. But that's ok.
That's called illeagle Have fun when the FCC comes knocking