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M-RK II how to programm out of band

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artee99

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Jan 12, 2014
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I have M-RK 440-470MHz and want to program some amateur frequencies 438-439 MHz. Software R18B do not allow to enter frequency out of band. I know that is possible as i've seen the same radio working on amateur freq. How to do it??
 

ElroyJetson

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Sep 8, 2002
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Florida, where you wish you were!
It's called an .sc4 file but I don't, unfortunately, know enough about it to be able to give a detailed explanation. But the .sc4 file allows modification of some aspects of the radio's behavior, including going out of band.

But, there's never any assurance that an appropriate .sc4 file is enough for taking a radio out of band. There's only so much wiggle room for the VCOs to operate outside their designed band limits and at some point you encounter a loss of receive sensitivity and transmit power as well.

Some radios work better out of band than others of the same type.

I will leave the explanation of the details of the .sc4 file to someone who knows about it better than I do.
 

mm

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Dec 19, 2002
Messages
616
Yahoo groups has a mrk radio group.

I have several sc4 files that I had the moderator upload in the files section but it has been several years since visiting or updating to this group and I don't remember if there is a 440 sc4 file.
 
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