Breakout Boards / Radio

This simple spring antenna matches great with any of our 900MHz RFM and LoRa breakouts, bonnets and Feathers. They're made of copper-clad wire so you can solder them easily. They are compact, only 17.5mm/0.68" long, and have 2.15dBi of gain and 50Ω impedance, so it will work fantastically with just about any 850~950MHz wireless receiver/transmitter.

This simple spring antenna matches great with any of our 433MHz RFM and LoRa breakouts, bonnets and Feathers. They're made of copper-clad wire so you can solder them easily. They are compact, only ~38mm / 1.5" long, and have 2.5dBi of gain and 50Ω impedance, so it will work fantastically with just about any 400~450MHz wireless receiver/transmitter.

"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat." Sending data over long distances is like magic, and now you can be a magician...

"You see, wire telegraph is a kind of a very, very long cat. You pull his tail in New York and his head is meowing in Los Angeles. Do you understand this? And radio operates exactly the same way: you send signals here, they receive them there. The only difference is that there is no cat." Sending data over long distances is like magic, and now you can be a magician...

Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit! This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from Best of all, we even have a great tutorial and library to get you started! Our code is designed for use with the Arduino microcontroller...

Never hunt around for another crystal again, with the Si5351A clock generator breakout from Adafruit! This chip has a precision 25MHz crystal reference and internal PLL and dividers so it can generate just about any frequency, from optional edge-launch SMA connector for output #1. (If you need SMA-connector outputs for all three ports, check out the non-QT breakout...

The RockBLOCK 9603 allows you to send and receive short messages from anywhere on Earth with a clear view of the sky. And when we say anywhere we mean anywhere. It works far beyond the reach of WiFi and GSM networks. Maybe you want to transmit weather information from mid-ocean? Or use it to control your robot in the middle of the desert? Perhaps you need emergency...

Yaaar! Become your very own pirate radio station with this FM radio transmitter. This breakout board, based on the best-of-class Si4713, is an all-in-one stereo audio FM transmitter that can also transmit RDS/RBDS data! Wire up to your favorite microcontroller (we suggest an Arduino) to the I2C data lines to set the transmit frequency and play line-level audio into...