News post & update: eleccircuit.com |
98-100MHz FM transmitters using one transistor and 1.5 volts battery Posted: 12 Mar 2015 06:40 PM PDT This is the small FM transmitters using one transistor and 1.5 volts battery as power supply, in 98MHz to 100 MHz FM frequency range. The coil-L is 8 turns of 18 swg wire wound with a inside diameter air core of about 5mm. Then stretch the coil to width of 9 mm. The T1 use […] |
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