FM transmitter

Hi guys,

My neighbors and I are going to be having a joint flat party. In order to keep the music the same throughout, I want to hook up an FM Tx to my PC, and tune in both of our Hi-Fis. (I realise this is technically illegal, but I'm going to keep the Tx power right down).

I have an old wireless kit for a guitar which operates at 174.1MHz which I want to adapt for the job.

I've photographed the PCB inside it:

I have two questions:

1. Can anyone tell me if this is already a stereo FM transmitter? I couldn't quite work the circuit out. (the ICs are a compressor/limiter type thing and an RF op-amp package). I see that there are 4 wires on the input (red, white, yellow, black) which would suggest stereo.

1. How should I go about re-assigning the frequency? The crystal osc is

14.198MHz (how come it broadcasts at 174.1MHz?!). Should I swap for another crystal? Or am I better to swap some inductors/capacitors? Incidentally, I tried tuning a few of the tunable inductors and caps, but there's not sufficient movement to get it to a frequency I can recieve on a stereo.

I'm aiming for somewhere around 100MHz.

Thanks in advance!!

Adam.