fm radio

The critical part of the fm radio receiver is the first stage, TR1/VC1, where the wirings must be kept as short as possible. Coil L1 is formed by winding 8 turns of 1mm (20 swg) enamelled copper wire on a 6 mm diameter former, which is then removed. After that L1 should be stretched carefully...

Mini fm radio Transmitter circuit using BF199 This small FM transmitter with a range of about 50 meters designed for hoby. With lots of mini-transmitters then you have a comprehensive, action-packed radio program. Due to the power supply via the USB port of a high frequency stability is...

88-108Mhz FM Radio Transmitter This is a fairly basic radio transmitter circuit that is produced by a Project Kits company, Quasar. There are 3 stages in this version. But can be modified easily to output around 4W instead 500mW! The main circuit diagram is here: Parts list: These...