Hello there, I hope that you are having a great day!
I started experimenting with RF few weeks ago, and managed to create two working transmitter circuits - using a 555 Timer & 40MHz Quartz Crystal Oscillator. I could easily test them by monitoring the appropriate frequency using a generic RTL-SDR Receiver Dongle & GQRX on Linux, which is all fine and dandy.
Last couple of days I've been trying to create one that relies on an LC Oscillator, but just couldn't manage to generate a signal. I used a 0.5mm copper wire, bendy as hell, to create a ~480nF coil by winding it five times over a 10mm cylinder. Coupled with a 10pF capacitor, the frequency of the oscillator should have been ~72Mhz.
What am I doing wrong?
I started experimenting with RF few weeks ago, and managed to create two working transmitter circuits - using a 555 Timer & 40MHz Quartz Crystal Oscillator. I could easily test them by monitoring the appropriate frequency using a generic RTL-SDR Receiver Dongle & GQRX on Linux, which is all fine and dandy.
Last couple of days I've been trying to create one that relies on an LC Oscillator, but just couldn't manage to generate a signal. I used a 0.5mm copper wire, bendy as hell, to create a ~480nF coil by winding it five times over a 10mm cylinder. Coupled with a 10pF capacitor, the frequency of the oscillator should have been ~72Mhz.
What am I doing wrong?
Attachments
-
9.8 KB Views: 26