Hi,
I have built a few FM Transmitter kits - all using coils. These tend to not be stable in terms of frequency.
I'm interested in building a crystal-locked FM tracking transmitter using one of the more readily available crystals - e.g. a 10Mhz in a third overtone mode to get to the normal FM band.
With a tracking transmitter I mean a circuit that will produce a beep or continuous tone at a certain frequency.
Has anyone built something like this and can someone tell me which approaches works well?
I have built a few FM Transmitter kits - all using coils. These tend to not be stable in terms of frequency.
I'm interested in building a crystal-locked FM tracking transmitter using one of the more readily available crystals - e.g. a 10Mhz in a third overtone mode to get to the normal FM band.
With a tracking transmitter I mean a circuit that will produce a beep or continuous tone at a certain frequency.
Has anyone built something like this and can someone tell me which approaches works well?