SQ2JDM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,435 messages

Active dates

26 UTC dates

Estimated median S/N

0 dB

Estimated 10th-90th percentile

-11 to +13 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 23, moderate (-15 to -9 dB) 212, strong (≥ -8 dB) 1,200.

WSJT-X defines S/N reports against a 2,500 Hz reference noise bandwidth. The ranges above are SO8OO receiver-side display categories, not official WSJT-X classes, transmitter-power measurements or estimates of how easy the station is to hear elsewhere. Statistics include only successful decodes on SO8OO's monitored FT8 channels; transmissions that were not decoded are absent.

Frequent counterpart tokens observed at SO8OO

Tokens most often paired with SQ2JDM in decoded directed-looking exchanges:

Attributed messages by UTC hour

Rolling 90-day UTC chart window. Counts follow decoded message structure: the first token for CQ, or the second token in a directed-looking message.

Most frequent locator attributed to SQ2JDM

The map compares the centres and boundaries of the locator field attributed to this token by decoded message structure, 2° × 1° as a Maidenhead square, and SO8OO's six-character receiver square. The separation is not an exact antenna-to-antenna distance or a radio-path length.

Attributed locator

JO94 · 603 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

542 km (approx.)

Last such locator decoded

2026-09-21 21:52 UTC

A decoded locator can describe portable, remote or special-event operation and is not proof of a permanent station address or transmitter identity.

Observed FT8 exchanges

S/N cells show: decoded at SO8OO / report transmitted by the counterpart. An observed exchange is not a QSL or an official logbook confirmation.

Recent FT8 messages decoded at SO8OO

Frequency values are decoder audio offsets in hertz, not RF frequencies.

UTC    dB Audio  Message
232845  +2  568  SQ2JDM S55P -03
192915  -4 1367  SP5DFK/QRP SQ2JDM -01
210100 +11  944  GD3SKZ SQ2JDM -03 (x7)
201500  +7  996  SQ2JDM SQ8NA R+02
201515  +2  996  SQ8NA SQ2JDM -07
201530  +4  996  SQ2JDM SQ8NA R+02
201545  +4  996  SQ8NA SQ2JDM RR73
201600 +12  996  SQ2JDM SQ8NA 73
204600  +8 1125  F5OYA/P SQ2JDM -20

UTC    dB Audio  Message
085545  -8 1846  GU4WRP SQ2JDM RR73 (x3)
092000  -8 1538  SP9DAT SQ2JDM -14 (x2)
094245 -14 1993  DK5UR SQ2JDM -23 (x2)
191615  +5 1737  HB0PA SQ2JDM +05 (x5)
192200  -2 1737  SQ2JDM HB0PA R-01
192215  -1 1737  HB0PA SQ2JDM RR73
192230  -9 1737  SQ2JDM HB0PA 73

UTC    dB Audio  Message
165330  +3 1535  SP2OSA SQ2JDM 73
234630  -3 1552  K3RTA SQ2JDM JO94 (x3)
234745  -5 1835  SQ2JDM UR9QQ KN77
234745  +4 2480  SQ2JDM LZ2VQ KN23
234800  +2 1995  VE3WMI SQ2JDM JO94
234815  -5 1835  SQ2JDM UR9QQ KN77
234830  +0 1995  UR9QQ SQ2JDM -12
234845  -9 1835  SQ2JDM UR9QQ R-07 (x2)
235030  -6 1994  VE3WMI SQ2JDM JO94 (x2)
235200  -3 1994  SQ8NA SQ2JDM R+00
210015  +1 1196  II8IHBC SQ2JDM +00

UTC    dB Audio  Message
115415 -13 2294  SQ2JDM RV3YN KO73
121030 -20 1832  SQ2JDM M0CKX -13 (x14)

Decoder S/N history by band

Count-weighted daily averages across messages attributed to this profiled token and successfully decoded at SO8OO, limited to the rolling 90-day UTC chart window.