SEQ-QSK Microprocessor Controlled High Speed Sequencer

The Model SEQ-QSK High Speed Transmit/Receive Sequencer is a second generation microprocessor controlled sequencer with its origins from the SEQ-1 microwave sequencer product line. A one second Heartbeat is used to give a visual indication that the SEQ-QSK is functioning properly, and four green LED’s give a visual indication of the sequenced step operations. Delay…

ID-O-Matic II kit

– ID timer with Morse code output – Keyed CW, audio, and PTT outputs – PTT/audio combination for keying HTs – 2-channel audio mixer for repeater audio & ID – Filtering & de-emphasis for repeater audio – Simple serial port configuration In a nutshell, the ID-O-Matic II is the original ID-O-Matic, combined with the features…

Minitouch keyer P1SBW

Model P1BSW is the ideal way to save your battery from draining down if you accidentally forget to shut your model P1 off. Press the momentary push button and your model P1BS becomes active for 10 minutes. Touch the left paddle anytime during the 10 minutes and the timer resets for another 10 minutes. During…

Morse-code trainer

My kids are learning Morse code this summer, so I threw together this little circuit to help them learn. And to make it more fun… It uses an ATtiny85 ($2.26 at digikey.com) to drive a piezo beeper (? $3.50 at Radio Shack.) The ATtiny85 takes 5.5V max, so I built the circuit on a piece…