Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Specan, a reboot of the W7ZOI/K7TAU spectrum analyzer

Specan, a reboot of the W7ZOI/K7TAU spectrum analyzer

Ashhar Farhan blogged about his spectrum analyzer build:

The Specan is actually a very simple but robustly built receiver. it is, in essence, a double conversion superhet receiver with 112 Mhz and 12 Mhz Intermediate frequencies. The first mixer uses an Si570 as the local oscillator. The second oscillator is a crystal controlled at 100 MHz; built with a common microprocessor crystal of 20 MHz. Unlike most radio receivers, the second IF has two filters : a narrow band crystal filter with 1 Khz bandwidth and a wide band LC filter with 300 Khz bandwidth. The detector converts the tuned signals into a log scale. The detector output is a decibel measure of the incoming signal.
The Specan is controlled with an Arduino board. The Arduino controls the Si570, handles the front panel, talks to the computer over the USB port, reads the detector and switches the filters.
In a very simple usage, the Specan can be tuned around like a regular radio. Instead of listening to the signals, you read their strength on the LCD display.

Check out the video after the break.

Project info at Farhan’s VU2ESE’s radio experiments blog.

Via SolderSmoke blog.

Read more Here







 

More Articles to Read

Peeqo is a desktop bot that communicates through GIFs
Peeqo is a desktop bot that communicates through GIFs
Serial seven segment LED display shield
Serial seven segment LED display shield
An Arduino round word clock
An Arduino round word clock
The Sandwich-o-Matic will make your lunch automatically
The Sandwich-o-Matic will make your lunch automatically
An Arduino-controlled automated whiskey distillery
An Arduino-controlled automated whiskey distillery
The Rex800 looks like a dinosaur Terminator
The Rex800 looks like a dinosaur Terminator
Wrist thrusters let you fly through the water effortlessly
Wrist thrusters let you fly through the water effortlessly
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adjusting clock with alarm, hygrometer & thermometer on 1.8″ ST7735 display
Adding an “extra sense” with rangefinders
Adding an “extra sense” with rangefinders
This wireless game controller looks like a rug
This wireless game controller looks like a rug
How to run your ESP8266 for years on a battery
How to run your ESP8266 for years on a battery
Making beats on a tiny Arduino DJ controller
Making beats on a tiny Arduino DJ controller
This Arduino machine will judge how sick your ollies are
This Arduino machine will judge how sick your ollies are
Turn an old payphone into a boombox for ’90s hits
Turn an old payphone into a boombox for ’90s hits
QuadBot is a 3D-printable walking robot for everyone
QuadBot is a 3D-printable walking robot for everyone
An Arduino tachometer for your older vehicle
An Arduino tachometer for your older vehicle
Harry Potter fans create a fully-functioning smart wand
Harry Potter fans create a fully-functioning smart wand
A 3D-printed lunar phase clock for your nightstand
A 3D-printed lunar phase clock for your nightstand
Create your own Red Dwarf Talkie Toaster replica
Create your own Red Dwarf Talkie Toaster replica
The Orbitalochka is a solar-powered satellite synth
The Orbitalochka is a solar-powered satellite synth

Top


Shares