That mixer is in both the Rx and Tx path so will result in no output if faulty.

Replace it with a Mini-Circuits SRA-3MH.
See http://www.sm6rpz.se/radio/mod7.php


On 23-Apr-10 11:20, Charles Kaross wrote:

The rig had zero (or near zero) RF output when purchased - I will move
this problem to the bottom of the list.
The diodes in the CM-1 mixer module on the upconverter board are shorted

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