28 lines
1.2 KiB
Plaintext
28 lines
1.2 KiB
Plaintext
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GET LONGER BATTERY LIFE FROM YOUR
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REGENCY MX-4000 OR MX-4200 SCANNER
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by Bob Parnass, AJ9S
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The discontinued Regency MX-4000 and MX-4200 are battery
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operated, 20 channel scanners manufactured in Japan by
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AOR. Both scanners contain a low battery warning circuit
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which disables the scanner when the battery voltage falls
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below a preset level.
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A freshly charged battery pack should last at least 5
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hours before needing a recharge. Ron Smithberg, of
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Joliet, IL, complained of getting only 2 hours use from a
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set of freshly charged NiCd batteries in his MX-4200.
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This article describes how we increased his usage to over
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7 hours between charges.
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Both MX models are powered by a pack of 4 AA sized NiCd
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batteries. The battery pack is nominally 4.8 volts and
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has a rated capacity of about 500 mAh. The scanner draws
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about 100 mA when squelched. A good rule of thumb is
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that a NiCd should be recharged when its voltage falls
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below 1.0 volts per cell. Using this heuristic, the MX-
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4200 battery pack should be recharged when it falls below
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4.0 volts under load.
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CONTINUED IN FILE MX4000.3
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