Hi Carl,

On 24.05.2018 06:31, Carl Laufer wrote:

Is there any reason for this to be turned on during normal operation of the RTL-SDR?

No, not really, I'm not aware of any sticks making use of the loop-through output.

Turning it off seems to reduce current usage by 10 to 20 mA. To turn it off set reg 0x05 bit 7 to 1. Seems to turned be on by default. Haven't seen any effects from turning it off.

Good point, I've just committed a patch that turns it off.

Regards, Steve