Re: separate CAT jack, without using the USB cable #ubitx #arduino #cat #raduino

John (vk2eta)
 

Hello Sascha,

It should work "in theory" without a level converter (but it does not hurt to verify).

Reason being is that "A TTL input signal is defined as "low" when between 0 V and 0.8 V with respect to the ground terminal, and "high" when between 2 V and VCC (5 V)". Source PJRC forum.

So even if the output is 3.3V it should be sufficient for the Tx side (resistors excepted as you mentioned).

73, John 

Join BITX20@groups.io to automatically receive all group messages.