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radio to radio operation

 

Hello All:


I am trying to run DRATS radio -to- radio, with Internet and Ratflectord disabled. Radio setup for com port and baud, and port <=> radio tested via programming as OK.

Raw and Sniffer says transmission is received, but no text in Chat or seen in log.

TX Message off, no GPS TX on both radios.

Any thoughts from the group?

Thanks,
--
Jeff Marden
KB1TJI
[email protected]
 

The one question I have is, is it set for serial and not network?

AL

KF5SMH
 

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Hi Jeff,?

Some questions that may help us understand what is happening:
1. Do the radios transmit when D-RATS sends data?
2. Does the receiving radio display the call sign and message from the transmitting radio?
3. Is either radio in "power saver" mode? Power saver mode sometimes causes the radio to miss parts of the D-STAR header message as it "wakes up".
4. Is the rf path between the radios good? D-STAR does not provide error correction for the low speed data channel, so if the path is bad you will not get data transfer.

You might consider posting your debug.log file so we can see any messages.?

Mike, N0SO


On Feb 1, 2014, at 6:59 PM, <jmardensdl@...> wrote:

?

Hello All:


I am trying to run DRATS radio -to- radio, with Internet and Ratflectord disabled. Radio setup for com port and baud, and port <=> radio tested via programming as OK.

Raw and Sniffer says transmission is received, but no text in Chat or seen in log.

TX Message off, no GPS TX on both radios.

Any thoughts from the group?

Thanks,
--
Jeff Marden
KB1TJI
 

Hello Mike and Group:


Thanks for the follow-up:


1. Do the radios transmit when D-RATS sends data?

*** Yes - tx and observed reception by the target radio.

2. Does the receiving radio display the call sign and message from the transmitting radio?

*** Yes, I do see the transmitting radio's call at the receive radio, but in the DRATS chat and log screen, I just see CQCQCQ. I have turned TX Messaging off on these radios as I saw a note saying TX messaging may interfere with DRATS chat message bandwidth - so no TX Messaging on receive radio as expected.

3. Is either radio in "power saver" mode? Power saver mode sometimes causes the radio to miss parts of the D-STAR header message as it "wakes up".

*** Nope, power save and auto off features disabled.

4. Is the rf path between the radios good? D-STAR does not provide error correction for the low speed data channel, so if the path is bad you will not get data transfer.

*** I believe rf path is good. DSTAR audio between radios is fine (only 5 feet between radios, but both on low power mode).

You might consider posting your debug.log file so we can see any messages

*** On the logs, rookie response: I don't see any log files in the DRATS directory. I do see the Event Log. How/where might log files be (or be generated)?

Thanks,
--
Jeff Marden
jmardensdl@...


---In d-rats_group@..., <n0so@...> wrote:

Hi Jeff,?

Some questions that may help us understand what is happening:
1. Do the radios transmit when D-RATS sends data?
2. Does the receiving radio display the call sign and message from the transmitting radio?
3. Is either radio in "power saver" mode? Power saver mode sometimes causes the radio to miss parts of the D-STAR header message as it "wakes up".
4. Is the rf path between the radios good? D-STAR does not provide error correction for the low speed data channel, so if the path is bad you will not get data transfer.

You might consider posting your debug.log file so we can see any messages.?

Mike, N0SO


On Feb 1, 2014, at 6:59 PM, <jmardensdl@...> wrote:

?

Hello All:


I am trying to run DRATS radio -to- radio, with Internet and Ratflectord disabled. Radio setup for com port and baud, and port <=> radio tested via programming as OK.

Raw and Sniffer says transmission is received, but no text in Chat or seen in log.

TX Message off, no GPS TX on both radios.

Any thoughts from the group?

Thanks,
--
Jeff Marden
KB1TJI
 

Which radios? And do you have the radios listed in Email Access?


On Sat, Feb 1, 2014 at 5:59 PM, <jmardensdl@...> wrote:
?

Hello All:


I am trying to run DRATS radio -to- radio, with Internet and Ratflectord disabled. Radio setup for com port and baud, and port <=> radio tested via programming as OK.

Raw and Sniffer says transmission is received, but no text in Chat or seen in log.

TX Message off, no GPS TX on both radios.

Any thoughts from the group?

Thanks,
--
Jeff Marden
KB1TJI




--
73 de N4VIP (SFARES EC, Santa Fe and San Miguel Counties DEC),?Don
 

try and uncheck the raw and sniffer and check mark in the connect to internet under the file pull down menu.

73
 

Jeff,
It sounds to me as if you are running two computers each with their own radio in the same room. Here are a few suggestions: Uncheck the raw text box as it is not needed with D-RATS to D-RATS stations. Check the port speeds. Most D-STAR radios default to 9600bps. The ID-91 and 92 are 38400bps and the ID-1 is 19200bps. Are your radios in "low speed data" mode? Do both instances of D-RATS have the same callsign? They must be unique. Add a suffix of -1 to one of the callsigns. If you are using USB cables, try manually changing the COM port to the lowest number available. These are a few common issues I see with new users. I hope this was helpful.
Patrick (N3TSZ)

--- In d-rats_group@..., wrote:
>
> try and uncheck the raw and sniffer and check mark in the connect to internet under the file pull down menu.
> 73
>
 

Hello All:

Thanks to the helpful responses, I now have the 91AD and 92AD working as the radio part of a Drats node. As some folks had noted, baud rate was the issue and at 38K baud both HT Dstar radios connect and pass Drats RF traffic.

I note that some chat and ping messages received by the radios at 38K baud seem to get lost or dropped on the Drats computer screen, and I suspect that at this serial I/O baud rate, the XON/XOFF flow control protocol is loosing effectivity, allowing buffer overflows and lost serial characters. Anybody observing similar packet loss on 91AD 0r 92AD radios?

Thanks,
--
Jeff Marden
KB1TJI.
 

Turn off the power save feature in both of the radios.
Go to D-RATS preferences and make these changes:
Under Transfers, enable "Remote File Transfers".
Set Warmup Length to 16.
Set Warmup Timeout to 0.
Good luck!

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