Re: uBITX + Teensy audio interface - ground loops (?), RX/TX audio bleed? #ubitx #teensy

Jack, W8TEE
 

What happens when you connect a 12V battery?

Jack, W8TEE

On Friday, October 4, 2019, 9:28:51 AM EDT, Evan Hand <elhandjr@...> wrote:


Most Laptops do not have an earth ground.  You do have the shield of the USB port, however that would not necessarily ground for AC interference.

It was just a suggestion for a possible cause for the hum disappearing when the uBITX is connected, as the shield of the coax is usually at earth ground.

Good luck and 
73
Evan
AC9TU

--
Jack, W8TEE

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