CW settings for SO2R with N1MM

4O3A Signature

Hi everyone,

I'm trying to get things working but am still facing some issues. Does anyone have any written settings or configuration tips? I have the KE5DTO/K9CT setup documents, but the audio switching is not functioning as expected.

Thanks in advance for your help!

Ranko, 4O3A

Mike-VA3MW

Here is the public document in case others want to reference it

https://www.flexradio.com/documentation/flex-6700-so2r-configuration-n1mm

4O3A Signature

I found that internal switching on 6700 is not fast enough, and those short delays are simply making it useless for 2BSIQ. For standard SO2R its OK.

Thank for help

Mike-VA3MW

Can you explain what you are hearing with more detail?

I am also curious if your CW Delay settings are greater than your TX Delay settings.

73

4O3A Signature

Hi Mike,

Thanks for the follow-up question.

What I am hearing is the following:

When the Flex 6700 switches audio using the OTRSP protocol, there is a random delay in the audio handover, and very often the first part of the caller’s first CW character is missing. Because of this, I either need the caller to repeat, or I have to ask for a repeat myself — which completely defeats the purpose of 2BSIQ operation, where timing and accuracy are critical.

In short, the speed and consistency of the audio switching is not sufficient for high-rate 2BSIQ.

I also opened another topic on the Community regarding running two Flex radios from a single PC, because in my experience that seems to be the only reliable approach for true 2BSIQ operation.

73,
Ranko

Mike-VA3MW

I created a supported ticket for this.