Heres a few links that have worked well for me. I hope they will help others too.
http://www.ee.washington.edu/circuit_ar ... cross.html
This is a Transistor cross reference database. Just in case you have a bunch and your not sure if they will work!Note: The emitter is on the left looking at the face!! You can also enter in the NPN, 2222a and get a list of other equivalent NPN transistors to use. Helpful if you print it out and take it with you to an electronics saler
http://www.heliguy.com/nexus/fmsinterface.html
good pics the cable works great. Before I slide the hood on I fill it with 5 min epoxy. Works like a charm!
http://www.welwyn.demon.co.uk/buddy.htm
This is a link for some (most) Transmitter pin outs. For the Vanguard 4/6 series use the diagram for the RD6000.
Post what you have done. Is there any other design out there?