Sound Card Interface with Tone Keyer


Posted on Jun 19, 2012

This is an improved version of the audio interface commonly used to connect a computer soundcard to a transceiver`s receive and transmit audio circuits. This kind of interface is used by computer programs that send and receive SSTV, RTTY, CW, PSK31 and various other digital modes entirely in software.


Sound Card Interface with Tone Keyer
Click here to download the full size of the above Circuit.

This version includes an audio tone detector that keys the transmitter whenever transmit audio is generated by the application running on the PC. No serial port connection is required; a major advantage since PCs in ham shacks seem to never have enough se




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

DC motor PWM speed control
Battery charge-discharge indicator
Fixed-Current Regulator
12V 10Amp MJ2955 Switching Power Supply
o2 sensor
A 12V Car Charger For ASUS Eee Notebook
Single-Dual digital LED dice circuit
Usb To Rs232 Uart Serial Converter Pcb
Laser Disc Player Modification
Suzuki Wiring Diagrams
Seven-segment LED display circuit diagram of a counter



Top