This is the circuit for the HM-10ª, an instrument sold by Heathkit. The circuit is from a Radio Electronics from May 1963. The indication is by an analog instrument.
This circuit is based entirely on TTL gates. The circuit must be powered by a voltage of 5...
This transmitter operates in the FM band emitting beeps that can be picked up on a common radio at...
This circuit was found in a 90s European documentation. The circuit already includes a powerful...