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   DIR Return to: Galaxy DX-959 Mods
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       #Post#: 5--------------------------------------------------
       Galaxy DX-959 Channel Expansion Modification
   DIR By: kycbradio
       Date: October 5, 2018, 3:10 am
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       Galaxy DX-959 Channel Expansion Modification
       1.      First, remove power to (unplug) the radio. Remove the
       bottom chassis cover of the radio.
       2.      Locate J33 near the left-front of the main board. It is
       partially hidden under the small PCBs just above it. This is the
       controller you will be working with.
       3.      On J33, locate the wires going into the P5 (Yellow) & P6
       (Gray) positions and note their colors. These are the main
       frequency control lines. Follow both to each end and cut each
       wire at a convenient spot where it will be easiest to work on
       them.
       4.      Install an SPST switch between the gaps in each wire. Do
       not cross the wires. In other words, you want each switch
       in-line with each wire. This will effectively "open" or "close"
       each wire's circuit associated with the PLL. This provides the
       extra channels. Locate the switches anywhere you'd like as long
       as they are easily accessible. One option is to use any existing
       switch located on the front panel of the radio due to the fact
       that it is so cluttered with switches and knobs already.
       5.      Replace the bottom cover of the radio.
       Your radio should now be fully expanded to operate on the
       expanded frequencies.
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