HA3HM — FT8 activity observed at SO8OO

Observed FT8 message patterns

Attributed sample

1,393 messages

Active dates

12 UTC dates

Estimated median S/N

-12.9 dB

Estimated 10th-90th percentile

-20.9 to +1 dB

Recurring-pattern threshold

Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 502, moderate (-15 to -9 dB) 448, strong (≥ -8 dB) 443.

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 HA3HM 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 HA3HM

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

JN86 · 910 decoded messages

SO8OO receiver locator

KN09VW

Locator-centre separation

521 km (approx.)

Last such locator decoded

2026-09-08 12:33 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
122000 -19 1741  CQ HA3HM JN86
122030 -19 1741  PD2MAC HA3HM -08 (x2)
122130 -22 1742  PD0IFI HA3HM +01 (x3)
122300 -22 1741  PD1AC HA3HM -01 (x3)
122430 -24 1741  PA1APW HA3HM -01 (x2)
122730 -24 1741  CQ HA3HM JN86                         a1 (x4)

UTC    dB Audio  Message
211245  -8  903  HA3HM F4MZI RR73
211300  -5 1703  F4MZI HA3HM 73
211330  -4 1702  CQ HA3HM JN86
211345  +2 1701  HA3HM RC2Y KO73
211400  -3 1702  RC2Y HA3HM +08
211415  +4 1701  HA3HM RC2Y R-12
211430  +4 1703  RC2Y HA3HM RR73
211445  +1 1701  HA3HM RC2Y 73
211500  +1 1702  EA1IOK HA3HM -14
211515 -10  570  HA3HM EA1IOK R-09
211530  -5 1702  EA1IOK HA3HM RR73
211545  +6 1114  HA3HM DK7ZT -08 (x3)
113900 -23 1704  CQ HA3HM JN86

UTC    dB Audio  Message
082945 -23 1906  HA3HM DK5WO R-21 (x2)
083515 -20  917  HA3HM DO1FKM JN49 (x2)
101045 -24 1968  HA3HM F4BJN JN25
104615 -17 1802  HA3HM DM9EE JO41
104745 -16 2189  HA3HM DK8EE JO41
112345  -2 2704  HA3HM EA3AKY JN01 (x3)
121015 -19 1801  HA3HM F4LNM R-14 (x2)
122845 -17 1801  HA3HM F5THL JN03 (x2)
123245 -24 1941  HA3HM F4FSY RR73

UTC    dB Audio  Message
090515  -2 2168  HA3HM PD7JLP 73
090615 +17  464  HA3HM IK4LZH JN54 (x4)
091215  +2 1819  HA3HM ON7DE JO20 (x2)
091445 +12 1782  HA3HM UA3AIU KO85 (x2)
092545  +3 2216  HA3HM IQ4JO JN63 (x3)
093315  +6  775  HA3HM LA6RJA -14 (x2)
093845 -13 2296  HA3HM SP6AXW 73

UTC    dB Audio  Message
181900 -13 1010  CQ HA3HM JN86
181915 -12 1057  HA3HM DJ1NE JN39
181930 -14 1010  DJ1NE HA3HM -16
181945 -11 1058  HA3HM DJ1NE R-01 (x2)
182030 -15 1010  CQ HA3HM JN86                       ? a1
182100 -13 1010  DJ1NE HA3HM -06
182115  -7 1789  HA3HM OH/SM5MRW R-05
182200 -11 1010  CQ HA3HM JN86
182315  -4 1010  HA3HM SP9DWV JN99 (x2)
182400 -10 1011  SP9DWV HA3HM RR73
182415  -2 1010  HA3HM SP9DWV 73
183115  -7  741  HA3HM S56FPW JN76 (x2)

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.