27 lines
1.3 KiB
Plaintext
27 lines
1.3 KiB
Plaintext
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ms6s.1
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Modification of the AEA DX Handy Radios (Models MX-6S and MX-28S)
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for Operation from External 12 volt Power.
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1. Remove the four black screws and plastic washers holding the front
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panel to the radio frame. Remove the front cover by gently pulling it away
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from the radio frame. Watch out for the wires going to the speaker and
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microphone.
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2. Remove the OPTION switch by unscrewing the tiny black screws mounting
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it to the bottom panel. Cut the white wire that goes up from the switch to/
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the top of the board, and unsolder or cut the resistor going from the
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switch to the grounded transformer can nearby. The removal of the OPTION
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swi<EFBFBD>nd its heatsink to fit
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against the bottom panel while the regulator sits parallel to the front panel.
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This means that the heatsink will have a 90 degree bend. Attach the heat-
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sink to the bottom panel -- either with a tiny machine screw and nut, or by
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loosening the other hardware on the bottom panel, and slipping the heatsink
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between the layers of sheet metal. Then retighten the other hardware.
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I found that some versions of the 10 volt positive regulator come with a very
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thin heatsink that makes this sort of installation possible. The usual 7810
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regulator heatsink is too thick, and screw/nut mounting is the only way.
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CONTINUED IN FILE MX6S.1
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