radio

Hi, I have some speakers I love, they have a PCB RF reciever inside. I bought more speakers but they are a different frequency.. I'd like to change them so they all match but have no idea what I am doing. Can you help?

Note: I've dabbled in electronics for many years, but I'm a newb when it comes to radio circuitry, so please forgive me for anything dumb I may say/ask. I'm trying to design a system where I can send a single radio pulse (no complex information, just a single pulse) periodically. This pulse...

Hi. I have recently gotten my hands on what I think is a very old radio: I am interested in how this device works. Inside the case is, among other things, a black cylinder containing some circuitry and on its side is a schematic: I have tried making a hand drawn copy: I am having a hard time...

Greetings, I'm new to electronics and am interested in the field just as a hobbyist. I've read the Complete electronics self teaching guide by Boysen and Kybett and am now moving to Basic Antennas ARRL and Building your own transistor radios by R. Quan. To be honest im attracted to RF...

Hi everyone I have a RF Long wave transmitter (broadcasts only to 10ft diamater). However there are no rf amplifier products available on the market to purchase. Does anyone know where I can get schematics to build one? (I know what transformers, diodes, transistors, capacitors, and resistors...

Hi! I have a 6006E CD RDS EON car radio and I build Bluetooth function into it. There are two 0R resistors in the wires from the radio module to the mixer module (it mixes the signal from the radio receiver and CD player and does a lot of stuff, which I don't know about). I removed these...

Hey guys! I’m a EEE student and will be a finalist next year! I need to chose a project for my master thesis and I’m sort of unsure. I’ve always loved wireless/RF communications, specially microwave systems, but I am unsure about what to do for my thesis. I shortlisted 3 main things: -Anti...