d/lloodd11_94

The 9-volt battery can be obtained for free if you use your Radio Shack
Free Battery Club card.
     The Exar 2207 VCO can be found if you call the Exar Corp. located in
Sunnyvale, California.  Call them, and tell them the state you live in, and
they'll give the name and phone number to the distributor that is located
closest to you. The 2207 will vary from about $3.00 for the silicon-grade
(which is the one you'll want to use) to about $12.00 for the high-grade
Military chip.
     Note:  When you call Exar, you may want to ask them to send you the
spec-sheets that gives greater detail as to the operation and construction of
the chip.

                     +-------------------+
                     | Schematic Diagram |
                     +-------------------+

             +--------------+            +-------------+
             |  1  2  3  A  |            |  Figure #1  |
             |  4  5  6  B  |            +-------------+
             |  7  8  9  C  |            | Logic Sid