| UTC | |
| USA Pacific | |
| Japan |
| Date | Call | Grid | Mode | Band | Frequency |
|---|---|---|---|---|---|
| 19 Nov 20 | OP4K | JO21ff | FT8 | 40m | 7.075900 |
| 14 Sep 20 | ON7WM | JO21uc | FT8 | 40m | 7.076190 |
| 15 Jun 14 | ON7TA | JO21fb | PSK31 | 20m | 14.071758 |
| 25 Mar 14 | PD1EDS | JO21qk | PSK31 | 10m | 28.121273 |
| 20 Mar 14 | PA0LDZ | JO21lo | PSK31 | 10m | 28.121177 |
| 18 Mar 14 | PA2CVD | JO21ek | PSK31 | 10m | 28.120668 |
| 16 Mar 14 | PA3CAU | JO21ko | PSK31 | 10m | 28.121805 |
| 12 Mar 14 | PB2A | JO21jn | PSK31 | 10m | 28.120650 |
| 11 Mar 14 | PH7Y | JO21gs | PSK31 | 10m | 28.121862 |
| 06 Mar 14 | ON2AD | JO21pc | PSK31 | 10m | 28.122374 |
| 06 Mar 14 | PD5GEA | JO21ev | PSK31 | 10m | 28.122171 |
| 12 Feb 14 | PA3EWP | JO21gu | PSK125 | 10m | 28.120000 |
| 12 Feb 14 | PA0AWA | JO21kp | PSK31 | 10m | 28.121560 |
| 05 Feb 14 | ON4BWI | JO21ji | PSK31 | 15m | 21.072054 |
| 19 Jan 14 | PA3EWP | JO21gu | PSK63 | 17m | 18.101577 |
| 09 Jan 13 | ON6NL | JO21ue | PSK31 | 15m | 21.071835 |
| 23 Sep 12 | ON4AXU | JO21qe | PSK31 | 10m | 28.121738 |
| 16 Nov 11 | PD0MDA | JO21gr | PSK31 | 10m | 28.121789 |
| 05 Nov 11 | PD1X | JO21pv | PSK31 | 10m | 28.121368 |
| 04 Nov 11 | ON4BWI | JO21ji | PSK31 | 10m | 28.121484 |
| 19 Oct 11 | ON7TZ | JO21kh | PSK31 | 10m | 28.120500 |
| 14 Oct 11 | ON7GB | JO21ia | PSK31 | 10m | 28.121653 |
| 12 Oct 11 | ON3ZP | JO21de | PSK31 | 10m | 28.120635 |
| 27 Mar 11 | ON4AXU | JO21qe | PSK31 | 15m | 21.070656 |
| 07 Mar 11 | ON7GB | JO21ia | PSK31 | 12m | 24.922099 |
| 24 Feb 11 | ON7TZ | JO21kh | PSK31 | 17m | 18.101529 |
| 10 Feb 11 | ON4BWI | JO21ji | PSK31 | 17m | 18.102216 |
| 01 Mar 10 | PA0KV | JO21mm | PSK31 | 17m | 18.101051 |
| 25 Feb 10 | ON7GB | JO21ia | PSK31 | 17m | 18.102085 |
| 16 Dec 09 | PI4TIL | JO21mn | PSK31 | 20m | 14.070920 |
| 20 Nov 09 | PA3DHR | JO21du | PSK31 | 20m | 14.072436 |
| 10 Nov 09 | PA0KV | JO21mm | PSK31 | 20m | 14.071101 |
| 01 Nov 09 | PD0ADR | JO21xr | PSK31 | 20m | 14.072516 |
| 01 Nov 09 | PD0ADR | JO21XR | PSK31 | 20m | 14.070000 |
| 28 Oct 09 | PA0BHD | JO21kp | PSK31 | 20m | 14.071488 |
| 06 Oct 09 | PD2PKM | JO21fr | PSK31 | 20m | 14.070292 |
| 04 Oct 09 | PF7DKW | JO21mn | PSK31 | 20m | 14.070000 |
| 17 Sep 09 | ON5AZ | JO21fe | PSK31 | 20m | 14.071200 |
| 17 Sep 09 | OO5Z | JO21fe | PSK31 | 20m | 14.070755 |
| 16 Sep 09 | ON3GTS | JO21sa | PSK31 | 20m | 14.072100 |
| 16 Sep 09 | PH7Y | JO21gs | PSK31 | 20m | 14.072103 |
| 16 Jun 09 | ON4AXU | JO21qe | PSK31 | 20m | 14.072483 |
| 03 Apr 09 | PA1JLG | JO21nr | PSK31 | 20m | 14.070902 |
| 02 Apr 09 | ON3LIM | JO21ud | PSK31 | 20m | 14.071100 |
| 18 Nov 08 | PA125CWZ | JO21uq | PSK31 | 20m | 14.071231 |
| 13 Nov 08 | ON8BE | JO21nb | PSK31 | 20m | 14.070608 |
| 28 Oct 08 | PA1LS | JO21go | PSK31 | 20m | 14.069783 |
| 21 Sep 08 | ON8WW | JO21kh | PSK31 | 20m | 14.071850 |
| 15 May 08 | ON7GB | JO21ia | PSK31 | 20m | 14.070285 |