I am trying to simulate this sine wave VCO:




I set the control voltage with the R14/R15 voltage divider, but for some reason the frequency does not seem to depend on the control voltage.




What do I miss here?

MOD NOTE: Images pasted directly into post to avoid objectionable content on original hosting site.

 

1) I do not see R14 or R15 on the .png format schematic diagram.

2) With Control voltage producing current through R1 and Q1 base, and R13 and Q5 base, this whole thing makes no sense. If it does work it will be very dependent on the temperature and any other variations in those two transistors.

 

1) I do not see R14 or R15 on the .png format schematic diagram.

How would you suggest to set the control voltage better?

2) With Control voltage producing current through R1 and Q1 base, and R13 and Q5 base, this whole thing makes no sense. If it does work it will be very dependent on the temperature and any other variations in those two transistors.

What do you mean "this whole thing makes no sense"? If you connect a voltage source to a resistor there will be current through the resistor according to the Ohm's law. This schematic is from a textbook. It's bound to have at least some sense.
At this point I do not care much about temperature stability. I just want to get the circuit working.

Forget to mention, there is also a brief description of the schematic and a parts list: