QDX Twins 80-10 m

My QDX twins from QRPLabs: 

1. On top, the high-band version, 20-10 m, with a revision 4 PCB
2. In the bottom, the original 80-20 m version with a revision 3a PCB

Both have been assembled for 9 Volts operation nominally.

My wife and I have identical twins in real life and at times one of the ways to distinguish between them was by different colors. Here it is the same, so the high-band QDX has a yellow LED and the low-band one has a green LED.