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Johnson 53SL Mobile radio programming cable schematic?

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Johnson 53SL Mobile radio programming cable schematic?

Posted: Tue Jul 17, 2012 10:32 pm
by pmedradio1
does anyone have the schematic for the 53SL mobile radio programming cable?

Is it a direct serial connection (no rib) like the 5100/51SL portables?

any help would be greatly appreciated. thank you

Re: Johnson 53SL Mobile radio programming cable schematic?

Posted: Wed Jul 18, 2012 12:52 am
by faradaycage
The 5300 series requires an EFJ RS-5300-specific RPI box and cable, or a cable with internal circuitry since the radio communication bus is RS-485 (not RS-232 like the 5100).

If you use the discount code "RIFS" on rfguys.com, all-in-one cables with built in circuitry are $99.80 with free shipping.
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