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For N3TSZ, many thanks Pat. I had to search how to change the COM port
from 11 to 3 but was able to do so. And I found a setting for the ID-31A
under Function that is called Data Speed. The manual says for low-speed
data transmission it should be 4800 but for connected external devices
(e.g. GPS), it should be 9600. The default is 9600! So after setting 4800
and COM 3, we were successfully able to transmit low-speed data emails 100%
through two different repeaters (W5SF and W5MPZ).

Do you know if we can also use a linked reflector?

And thanks again, you helped us make another step forward in using D-RATS
together with D-STAR as a valuable EMCOMM tool.

73 de N4VIP, Don


On Tue, Apr 9, 2013 at 5:29 PM, n3tsz <n3tsz@...> wrote:

**


Try setting warmup timeout to zero and warmup blocks to 16. This prefixes
empty data blocks to the D-RATS data, thus giving the repeater/gateway time
to open a path before the real data starts.

Also consider that the low speed data portion of the D-STAR stream does
not have forward error correction as the voice segment does. If you are
hearing R2D2, (it sounds like Cousin Itt to me) you may not have a good
enough signal into the repeater for a reliable connection.

If your radio transmits when you press send, you have it set right.

If you are using a USB data cable, try going to the device manager and
changing the port number to 4 or lower if possible. I have also heard that
manually entering the com port number rather than selecting it from the
list will cure the issue.

Hope this helps,
Patrick
(N3TSZ)


--- In d-rats_group@..., Donald Hinsman <dhinsman@> wrote:

Pat, what would be the setting on a 31A? DV Data TX? Mine is set to
auto.

I am having problems using a repeater to send low-speed data. If w use
simplex (N5BGC and N4VIP) then we have 100% success with the Test
Connectivity. However, if we go to a repeater (W5SF), then 0%. N5BGC has
a signal analyzer and can see the signals going into the repeater but

R2D2

coming out?


On Mon, Apr 8, 2013 at 5:20 PM, n3tsz <n3tsz@> wrote:

**

My IC-91AD lets me select one of five TX messages, or none/off. I guess
the 2820 is the same. The TX message uses the same data frames as low

speed

data, so sending a TX message from your radio and transferring data

from

the serial port uses more data frames per transmission and therefore

takes

longer. With a transfer rate of 900 bps, every little bit helps.


--- In d-rats_group@..., "spikels6" <spikels6@> wrote:

On the File " Using_D-RATS_with_your_D-STAR_radio.pdf ", what is

meant

by the "Turn off the TX message on your DSTAR radio as it uses

bandwidth

that could be used to transmit DRATS

data."

Do I select a line with nothing in it, or is there an on/off switch

somewhere in the IC-2820's Menu? I am trying to send email via the

radio RF.

Spike

--
73 de N4VIP (SFARES EC, SANTA FE AND SAN MIGUEL COUNTIES DEC), Don

--
73 de N4VIP (SFARES EC, SANTA FE AND SAN MIGUEL COUNTIES DEC), Don