High Speed Telegraphy - IARU World Records

IARU World Records

The IARU Region 1 HST working group maintains a list of HST world records, set at official IARU HST competitions. Top speeds vary strongly between the different events of the competition and categories. While reception and transmission of letter groups are limited to approximately 300 characters per minute, mainly due to physiologic difficulties in sending or writing at high speeds respectively, the maximum speeds in the RufzXP competition are more than twice as fast.

Note that the system to measure the telegraphy speed at IARU HST events has changed. Before 2004, the PARIS standard was used, which has since been changed to real characters. Old records have been recalculated accordingly.