Hi Take,
If I remember correctly, the problem is that when data mode is enabled
on the radio, the 1200 baud signal is disconnected. The 9600 baud
signal was the only one available.
Scott
Takehiko wrote:
>
>
> Scott,
>
> I have one v1.1 board and I am looking into this thread to understand
> the problem and the approach you did to fix the issues with v1.2 and I
> am wondering why you did not simply change the input signal from P3
> (AFIN) to P9 (SPO) of CN2, not adding duplicated additional filter on
> T2-135 board.
>
> According to DR-135 service manual, P9 (SPO) is called as VLI and it
> provides 1200bps decoding signal with 300mV. It is actually pin 4 of
> DR-135 D-SUB connector for external TNC connection.
>
> I am happy to hear your explanation to improve my v1.1 board receiver
> performance when I use it.
>
> Regards,
>
> take
>
> de JA5AEA
>
>
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