Eric.Wilson

4-9-13 -- Here are some useful links to mixers that I found (The second link may be more useful):

http://www.mhprofessional.com/downloads/products/0071544526/SayreCh07.pdf

http://www.qsl.net/va3iul/RF%20Mixers/RF_Mixers.pdf

4-15-13 -- If you are seeing the LO signal coming through the output of the mixer, it could be that the LO signal is just being picked up on the output. I could disconnect the LO signal from the mixer and it still showed up on the output.