Spectra trunked to conventional

This forum is for the discussions targeted at converting various models of Motorola equipment to operate in the 900MHz Amateur Band.

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Spectra trunked to conventional

Postby n2pdq » Fri Mar 19, 2010 11:41 am

Has anyone converted a 900mhz spectra from a trunking only to conventional model. I understand you can reflash the mlm board, if I'm correct? Let me know if anyone has some more insight.

Thanks
Dirk
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Re: Spectra trunked to conventional

Postby wa6jbd » Fri Mar 19, 2010 10:41 pm

I've had success by using the bit banger feature in Spectra Lab RSS.
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Re: Spectra trunked to conventional

Postby SlimBob » Sat Apr 03, 2010 11:16 pm

Bang it into a C or E model, remove the trunking mode and define a conventional mode. Then bang it back into an A model.

The B models are a bit light in the braincase, if you know what I mean. Features are very much limited to what MLM the unit has.
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Re: Spectra trunked to conventional

Postby Astro Spectra » Wed Sep 01, 2010 5:06 pm

This works:

http://www.repeater-builder.com/motorol ... opics.html

(Removing that last trunking mode).
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Re: Spectra trunked to conventional

Postby WB6DGN » Fri Sep 03, 2010 7:11 pm

"This works:
http://www.repeater-builder.com/motorol ... opics.html"

If I read it correctly, it works as long as you have the syskey files for the radio. If you don't, you can't do anything with the trunk modes in the radio, even delete them? I have never found any agency willing to give up their syskey files and, of course, if you buy a radio on the internet, it's unlikely that you'll get syskey files with the radio (seller probably doesn't even have them). Is there any other way to clear out those modes? Or, am I misreading something?
Tom
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Re: Spectra trunked to conventional

Postby Astro Spectra » Tue Sep 07, 2010 9:12 pm

You just make up your own system key! It is a bit of a lost art, but see:

http://www.batlabs.com/syskey.html
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Re: Spectra trunked to conventional

Postby WB6DGN » Tue Sep 07, 2010 11:33 pm

"You just make up your own system key! It is a bit of a lost art, but see:"

Thanks,
Tom
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