DMR raised cosine versus NOT raised consine

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n8lbv
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DMR raised cosine versus NOT raised consine

Post by n8lbv » Sat Apr 14, 2018 10:16 pm

During my testing DMR seems to bw working great whether modem is set to 4FSK
or 4FSK raised cosine?

What the difference?
Dose Transmit use more bandwidth without that filtering?

Thanks.

Steve
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HA2NON
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Re: DMR raised cosine versus NOT raised consine

Post by HA2NON » Mon Apr 16, 2018 7:31 am

4FSKRC uses a raised cosine filter in the modem to do the transmission.
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Re: DMR raised cosine versus NOT raised consine

Post by HA5OGR » Mon Apr 16, 2018 4:21 pm

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n8lbv
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Re: DMR raised cosine versus NOT raised consine

Post by n8lbv » Mon Apr 16, 2018 6:10 pm

Thanks for the replies.
Does not answer which one to use and why or one versus the other.
I realize I may need to stuy and better understand what raised cosign filtering on the TX actually is.
I realize what the setting does but I don't have a really good understanding of it yet.
They both seem to work well.
And that manual link for the chip is good information thanks.

Thanks.
I feel more like I do now.

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