Operating the PR-12 and PR-20E Antenna Power Supplies
on 115 VAC and 230 VAC
The same input terminals are used regardless
of AC input voltage, 115 or 220 but strapping must change on the bottom
of the pcb.

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Top photo shows that the unit has been strapped on the bottom
of the board for 230VAC
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It also indicates the Primary Power connections at L1 and
N
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Note that these power supplies are normally strapped for
115 VAC and the sticker is not present

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Here we see strapping for 230 VAC
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The circuit board must be removed to change the strapping
115 to 230.
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This change should be made by a competent technician.