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over deviation of D710A APRS mode at 9600 baud: reducing deviation
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Don Rolph
I have a TM-D710A which I am using for APRS. I am testing it at 9600 baud. Using my deviation meter, it looks like it is over deviating and it can not be decoded by a D710GA, D72A, or a component based APRS system. How do I reduce the deviation at 9600 baud? Thanks in advance! AB1PH Don Rolph |
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davebb123456
Hi I mite be wrong, but APRS is at 1200, that is why you are not being decoded, Dave 2E0DMB On Mon, 20 Jun 2022, 17:35 Don Rolph, <don.rolph@...> wrote:
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I'm agreeing on setting it to 1200bps. On Mon, Jun 20, 2022, 11:42 AM davebb123456 <davidbrowne76@...> wrote:
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John Huggins
Let me explain why 9600... Since 2009 Bruninga (Mr. APRS himself) led experimentation with 9600 for the Appalachian Trail Golden Packet (ATGP) annual event with some success so we try it every year. Interestingly ATGP and other users (both APRS and regular packet) have found the Kenwood 700/710 radios perform measurably better at 9600 than 1200. go figure. So yes, we do experiment with APRS (and regular packet) at 9600. Don seems to be observing an unexpected deviation value for FSK at 9600... hence the technical question. 73 John, kx4o On Mon, Jun 20, 2022 at 1:10 PM Ryan - K9NBG <schmilk@...> wrote:
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Don Rolph
APRS can be run at either 1200 baud or 9600 baud. Most of the infrastructure is at 1200 baud. The TM-D710A, TM-D710B, D72A, and component based APRS system are all designed to support both 1200 baud and 9600 baud. The TM-D710A seems, however, to be mis-configured. On Mon, Jun 20, 2022 at 12:42 PM davebb123456 <davidbrowne76@...> wrote:
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AB1PH Don Rolph |
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