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The object of the contest is to contact other amateurs around the world - especially member-society HQ stations and IARU officials - in as many ITU zones as possible on 160, 80, 40, 20, 15 and 10m CW and SSB. This year's event will run from 12 UTC on 13 July until 1159 UTC on the 14th (https://www.arrl.org/iaru-hf-world-championship). The following is a selection of IARU Member Society HQ stations that have announced their participation in this year's event:

Call Mult
------------------
4A0HQ FMRE
8N1HQ JARL
8N6HQ JARL
9A0HQ HRS
B1HQ CRAC
B4HQ CRAC
B5HQ CRAC
B7HQ CRAC
C37HQ URA
CR5HQ REP
CX1AA RCU
DA0HQ DARC
E7HQ ARABH
EF4HQ URE
EI0HQ IRTS
GR2HQ RSGB
HB9HQ USKA
II0HQ ARI
II2HQ ARI
II4HQ ARI
II6HQ ARI
II9HQ ARI
NU1AW/0 IARU
OE0HQ OV
OP0HQ UBA
OZ1HQ EDR
PA6HQ VERON
R4HQ SRR
R9HQ SRR
S50HQ ZRS
SN0HQ PZK
TM0HQ REF
VK3WIA WIA
W1AW/4 ARRL
YT0HQ SRS
ZF1A CARS
ZS9HQ SARL

Members of the IARU Administrative Council and the three IARU regional executive committees will send a signal report plus AC, R1, R2 or R3, as appropriate.