[drats_users] ERROR Correction in slow speed data

[Daniel Metcalf]

Agreed. From what I have read d-star is a lot like the UDP network protocol
where it is transmit and forget there is no handshaking / error correction
built in. It is up to the application developer to handle error correction
and the d-rats package does perform some level of error correction.

Dan Metcalf - KB3UUN.
On Sep 20, 2013 3:54 PM, "John Davis" <jdavis at gtworks.com> wrote:

>  My understanding is that the low speed data channel does NOT have error
> correction, however, D-RATS offers Error correction in Message and File
> Transfer modes where it is most important.****
>
> ** **
>
> John WB4QDX****
>
> ** **
>
> *From:* drats_users-bounces at intrepid.danplanet.com [mailto:
> drats_users-bounces at intrepid.danplanet.com] *On Behalf Of *Dave Welker
> *Sent:* Friday, September 20, 2013 3:19 PM
> *To:* D-Rats Mailing List
> *Subject:* [drats_users] ERROR Correction in slow speed data****
>
> ** **
>
> Hello all,****
>
> Can anyone confirm if the D-RATS slow speed data has FEC (Forward Error
> Correction) built in now or not?****
>
> I understand that D-STAR voice does have error correction built in.  I've
> checked on the D-RATS home page/documentation****
>
> which is a August 2009 reference.****
>
>  ****
>
> This is what I found in this document Under users manual/files:  Is this
> still current information?****
>
>  ****
>
> *Unlike the D-STAR DV Voice Channel, which has error correction built
> into the protocol, the Data Sub-channel has no error correction. *****
>
>  ****
>
> *This makes the transfer of data across D-STAR a lot more dependant on a
> good radio path being established between the two locations wishing to ***
> **
>
>  ****
>
> *exchange data.  D-RATS includes the ability to test connectivity between
> two locations**.*****
>
>  ****
>
> Thanks in advance****
>
> regards****
>
> Dave****
>
> W2SRP****
>
>  ****
>
>  ****
>
> Goals are where we want to be;
> Objectives are the steps to get there.****
>
>  ****
>
> There are 2 rules to success in life:
> 1. Don't tell people everything you know.****
>
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