Hello B-One;

Check the usual suspects.

1. power to hub - secure at wall outlet; secure where it plugs into the hub.

2. hub to host PC - secure at both ends.

3. RTL sticks - snug and securely connected.

When you hold an RTL stick in one hand and wiggle the USB connector with your fingers, does it move? Could be a cold solder joint.

Turn on "Tuner" logging and let it run. After it fails, post the log file here. It may have some clues.

Thank you very much! Here is a portion of the log. There are several lines below the bottom line that I did not include because they were all the same text.

Log file originally created as .\R00000007\Tuner-20170104.LOG Version: Unitrunker 1.0.32.7

PLL LO 855257500 prescale 1 Quotient 59 SDM 25587 error 79.

gain 92 7B FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25587 error 79.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25588 error 216.

gain 92 FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25588 error 216.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25590 error 73.

gain 8B FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25590 error 73.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25591 error 150.

gain 88 FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25591 error 150.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25593 error 67.

gain AE 7B FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25593 error 67.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25594 error 144.

gain 88 7B FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25594 error 144.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25596 error 2.

gain 8A FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25596 error 2.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25594 error 144.

gain 8A FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25594 error 144.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25593 error 67.

gain AE FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25593 error 67.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25591 error 150.

gain 95 FB FC E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25591 error 150.

PLL LO 855257500 prescale 1 Quotient 59 SDM 25590 error 73.

gain 83 FB FB E6

PLL LO 855257500 prescale 1 Quotient 59 SDM 25590 error 73.

USB::USB::Background interface(0) fails, 0000001F.

USB::USB::Background interface(0) fails, 00000079.

USB::USB::Background interface(0) fails, 00000079.