YOU  ASKED .......

You quite possibly could make one.  And to give you a flying start, we'll even help you by laying out here the steps required to achieve a result like the SkyLine 70-1000X bundle.

In nine "simple" steps, it requires:

• Research and experimentation to determine which parameters of the Syntech 1 radio are controlled by which pieces of data in the Z-273 module - frequencies, CTCSS tones, timeout timer, busy channel lockout, scanning, the list goes on..
• Learning how to read and program EPROMs.
• Learning how reading/programming the Z-273 module differs from a dealing with bare EPROM.
• Designing hardware circuitry to interface with the Z-273 and provide the proper interface signals to/from the host PC.
• Designing a printed circuit board to implement the circuit.
• Build the hardware.
• Writing the software to drive the hardware appropriately.
• Refining the software to present a respectable user interface.
• Testing, more testing, and still more testing.

Ever wonder why there is no other contemporary product filling this role?  None of these tasks is trivial.  Most are quite challenging.  While many people could readily complete the research, the software OR the hardware,  to produce a fully functioning product bundle is the result of mixing the right skills with a lot of hard work and persistence.  If anyone thinks this is an easy task, we would challenge them to produce a competing product and bring it to market.