QCX 40m CAT Interface... #cable #cat

Mark Garrisi

Hi all;

     My build will be complete this week!  Have a CAT question.
I understand I need to use a USB TTL style cable.  I found one with a 3.5mm stereo plug wired correctly.  Question is: Do I need a FTDI chipset?  On amazon, I found one stating this:  FTDI FT232RL Chipset: Built-in industrial grade FTDI FT232RL chip, high stability, enough to handle a variety of complex situations.


DSD TECH USB to 3.5mm 3.3V TTL Cable with Audio Jack Interface 6FT

Can I use this?  or do I avoid the chipset?


You need to use 5 volt TTL levels with the QCX .  

Most USB to TTL adaptors use the 5 volt levels. Most USB  chipsets will work.  Check the specs on what operating systems are supported by the device.

73, Bernie, VE3FWF
(most typos in this message have been generated by highly sophisticated auto-correction software)

Paul Ross

the 3.2 volt version works fine. Amazon is our friend. Works "out of the box."