The first and second is my transmitter, the last is the result of spectrum analyser. The oscilloscope will be tds-2012b.
OK ..... you cannot build RF circuits like this and expect them to work properly. It will be dreadfully unstable
all those big long loops of the jumper wires will be causing a nightmare of radiated RF that will affect other parts of the circuit
they will also totally mess up all your inductance values and the oscillator will never operate at the freq requires.
Basically ... DONT use breadboards for RF
Component leads should as short as possible. This reduces stray capacitance and inductance
have you actually simulated the circuit to see if it operates ? ( Im not sure if it is drawn in a simulation package or not ??)
OK you have a free-running oscillator, it's going to drift all over the place with temperature, waving your hand nearby and all the other things I mentioned about the construction
just a gentle nudge in the right direction when drawing circuits, tray to learn to draw circuits a little tidier ...
that is .... avoid all those multiple connections/lines you have around the collector of Q2
you could have it looking more like this ......
see how much cleaner it looks ? ... makes it easier to diagnose too
nice spec an, wouldn't mind one that went to 6GHz .... my Tek 2715 only goes to around 1800 MHz (1.8GHz)
I would really like one that went to 12GHz as I do a lot of stuff on 2.4, 5.6 and 10.3 GHz ... maybe one day
OK ... are ALL those signal blips to the left and right of the blue vertical "M" line signals from your transmitter ?
Dave