Circuit diagrams for radio amateurs

Tone (frequency) set - DТМF - used in telephones, and radio stations with other devices. The article describes the receiver-decoder,...

Owners of vintage cars in the operation face a number specific problems and excessive percentage of CO in the exhaust...

Received widespread domestic microwave ovens are certified manufacturers KVK safe for the user. Indeed, the level external microwave radiation of...

For everyday work on the air on LW bands and various experiments with receiving and transmitting antennas for Amateur radio,...

The proposed generator is useful for Troubleshooting various electro-acoustic equipment. It allows you to supply voltage sound signal in different...