Using some inexpensive computer crystals from China at less than $2 each, I built up the basic oscillator portion of this Radio Locator Beacon and got surprisingly good results. I want a light weight 2 meter transmitter for a simple balloon project (cheap because it may get lost!). The oscillator ran fine from 5 to 6 volts and I keyed it with an Arduino and it remained stable. Need to couple a simple whip antenna and power and I will be set. I may try to make a PCB for the design.
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