It's a CAT5e cable with wires connected to make one long loop, shielding interrupted at the half-point, loop shorted through a 1:1 balun
from a few minutes just now:
6M0MM, 7Z1AL, 8Q7PR, A61DI, BG3GFI, BH8URS, DB8BT, DD7BQ, DF1BN, DH7OM, DL0FUN, DL2ATZ, DL3TA, DL8HB, DL8YHR, DO9BAU, EA3DKP, EA5LH, EA6C, EC8AVE, F1IQH, F1PGQ, F1SYG, GM4ZTO, IK0PET, IS0HME, IW5AZA, IZ0EGA, LA3RLA, LU9DO, LZ1HSS, MM0XBD, MM6MVM, OE9WBV, OH3HNU, OH3OJ, OK1ADT, OM1US, ON9DC, OZ1DSD, OZ5ABO, PA3BMB, PB0AIC, PD0ADC, PD1WS, R2FBW, R4GR, RA9J, RK9UT, RU0AX, RV9CT, RZ0SW, S56UL, SM5KNV, SP2HJN, SP3EPK, SP9TBT, SV5AZK, SY3EBK, UA0TP, UN/R0AAE, UN9GA, UR9QQ, VK1MA, VK4TDW, VK8NSB, YL3AOO, YO3VIO
some pretty exotic places, including China
also figured out how to put the live receipts on a map
