You can buy Vectronics VEC-1202K 2-meter FM transmitter kit on sale in Radio Shack for $59.99. You will also need to order 18.04875 MHz crystal (18.04875x8=144.390) from
www.icmfg.com part number 434275 18.04875 MHz $15.05 plus $6.50 shipping. This crystal will allow to transmit on 144.390 MHz. Also get TinyTrakII kit $30 from
www.byonics.com. Then assemble everything in one case, connect antenna and GPS with RS-232, and you have a compact APRS homebrewed tracker for about $120 (GPS is not included). 73 Igor NN1I