The advertised range of my recently bought YIG oscillator is 1.1 - 3.4 GHz.
On my spectrum analyser, I found 2 resonances, spaced at about 1 GHz and 2 GHz from the main peak (see picture below were the first resonance can be seen at about 2GHz).
That means that the resonances fall inside the advertised range.
In the other YIG oscillators I bought, there were resonance only beyond the advertised range. Is it normal or is the oscillator damaged ?