Help PORTSDOWN /LANGSTONE info pin 21

[HB9IAM]

To avoid the 3 second TX/RX delay on LANGSTONE, need to sitch off the MiniTiouner.
The Portsdown 4 GPIO Connections Table show that Pin 21 is LOW for Porstdown, HIGH for Langtone.
One my two Portdown-Langstone units, i get no voltage change ?
Why ?

Pierre HB9IAM

[g4eml]

No idea why the minitiouner would case that. It must be causing a problem on the USB.

Pin 21 is not used on Portsdown. On Langstone it is the most significant bit (D7) of the user programmable band bits. I don't know where the comment about being high for Langstone came from but it is not correct.

Colin G4EML

[HB9IAM]

Raspberry Pi4
Portsdown 20241290
Langstone V2 use Pluto

[HB9IAM]

Hi Colin
The comment is from the Portsdown GPIO connections table

GPIO pin 21

Portsdown 4 GPIO Connection pin 21.PNG (18.36 KiB) Viewed 12 times

I try to Pull Up the pin 21 - no sucess

I have High on pin 21 for Porstdown, but just in Band Viever mode ...

Its a anoter possibility to get a indication of the mode in service ?
Pierre HB9IAM