No transmission
 
OQO (small laptop), 201101 series (AT86RF231, USB-A, Johanson balun, 110% antenna, larger ground)
atusb-20110104-#1, 0.5 pF rework
 
Ben, 20100903 series (AT86RF230, Würth balun, 100% antenna)
atusd-20100903-A atusd-20100903-B, external antenna
 
Ben, 20100912 series (AT86RF230, Würth balun, 100% antenna with tail)
atusd-20100912-I atusd-20100912-II
 
Ben, 201101 series (AT86RF231, Johanson balun, 110% antenna, many vias)
atusd-20110104-#1 atusd-20110104-#2
 

Command used in all cases:

atrf-txrx -f 2450 -p 3 "012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567890123456789" 1000