Building the “Toothpick” Audio CW Filter

DIY

“Toothpick” Audio CW Filter Kit Variable bandpass helps peak desired signal Audio amplifier will drive speaker to room filling volume In / out switch Use with phones or speaker Will work with other qrp rigs and older receivers Measured peak bandpass 700 to 1000 Hertz Introduction: The “toothpick” is a simple variable bandpass audio filter…

RigExpert WTI-1 Wireless Transceiver Interface

New equipment

Connect your transceiver to the Internet via a Wi-Fi network. Use your laptop to operate phone, CW or digital modes from anywhere in the world! RigExpert WTI-1 is a revolutionary new device to interface your transceiver to your computer wirelessly. It provides: Transceiver audio interface Analog audio interface is a connection to transceiver audio output…