This signal amplifier for ATV in the 427 to 439 MHz band was found in a magazine 73 for radio amateurs of the 90's. The circuit is installed next to the antenna on the mast itself.
We found this circuit in a Radio Electronics from May 1966. Its purpose is to generate pulses...
This transmitter emits signals in the FM range, reaching a few meters away. The modulation...
This circuit allows 220 / 240V shavers to be used in the 110V network. The diodes can be general...