TCO-743A719.44MHZ TCO-743A78MHZ TCO-743HC7(16.384MHZ) TCO-743HC7-11.94396 TCO-743HC7-12.624M TCO-743HC737.056MHZ TCO-744SHC8.192MHZ TCO-745JTC50.000MHZ TCO-745VC TCO-745VC(6.176MHZ)