How many G11 DIY are on the air?

My G11 is the third assembled "do-it-yourself" transceiver. Here is the list of builders who successfully completed the project:

[Builder's callsign, date and first-QSO call] G11 #1 K9GQ 20 AUG 2015 KB0PPQ
G11 #2 VK2AMS 20 SEPT 2015 VK4WI
G11 #3 VK2DX 31 DEC 2015 CT1FBK
G11 #4 KF5KOG 5 JAN 2015 KD7H
G11 #5 AB4GS 24 JAN 2015 KB0PPQ

My first contact with G11 #3 was on JT65 mode with CT1FBK from Portugal. Easy!