ON7HM — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Belgium Most frequent locator attributed to this token: JO10

Receiver-side FT8 activity involving ON7HM, decoded by SO8OO in southeastern Poland. 1,783 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 49 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-06.

These are automated observations at the SO8OO receiver, not an official contact log. Times are UTC. Attribution follows decoded FT8 message structure: CQ uses the first token and directed-looking messages use the second. Free text that resembles a directed message can be attributed imperfectly. Summary S/N reflects propagation plus SO8OO receiver, antenna and local-noise conditions. Counts are not adjusted for monitoring outages; transmissions that were not decoded are absent. Inferred entity and location data may be inaccurate for portable, remote or special-event operation.

SO8OO decoded 1,783 FT8 messages attributed to ON7HM as the transmitting token by decoded message structure across 49 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (49%), followed by 10 m (29%) and 40 m (16%). Several six-hour UTC windows tied for the largest share (65%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -14 dB.

Overview

1,783
Messages attributed
49
UTC dates decoded
192
Active 15-min windows
-14 dB
Estimated median S/N

Bands

80m · 868 40m · 283 20m · 118 10m · 514
First attributed message: 2026-06-08
Last attributed message: 2026-10-06 05:17 UTC

Observed FT8 message patterns

Attributed sample
1,783 messages
Active dates
49 UTC dates
Estimated median S/N
-14 dB
Estimated 10th-90th percentile
-21 to -0.6 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 690, moderate (-15 to -9 dB) 616, strong (≥ -8 dB) 477.

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 ON7HM 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 ON7HM

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
JO10 · 955 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
1,335 km (approx.)
Last such locator decoded
2026-10-06 05:16 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.

Time UTCBandON7HM S/NCounterpartCounterpart S/NMsgsCapture
10-06 05:15 80m -10 / - HB9CYT - / +5 4 Partial capture
10-06 05:13 80m -17 / - LA5ZUA - / -11 2 Partial capture
10-06 05:10 80m - / -14 YT3MD -5 / - 3 ✓ Closing fragment
10-06 05:04 80m -24 / - GW0KRL +4 / - 2 ✓ Closing observed
10-06 04:53 80m -8 / -12 OM2ZZ +18 / - 4 ✓ Closing observed
10-06 04:45 80m -13 / 0 DL7PIA -6 / -4 5 ✓ Full exchange observed
10-06 04:42 80m -14 / -16 IU5VMC 0 / 0 5 Partial capture
10-06 04:37 80m -16 / -7 OK2ZCH +3 / - 4 ✓ Closing observed
10-06 04:34 80m -16 / - SM3WFR - / - 3 Partial capture
10-06 04:28 80m -13 / -4 OH1TK -7 / -7 5 ✓ Full exchange observed
10-06 04:27 80m -14 / - SM3WFR - / - 2 Partial capture
10-06 04:26 80m -13 / - IT9WRZ - / - 2 Partial capture
10-06 04:25 80m -7 / - F5OYA/P - / - 2 Partial capture
10-06 04:24 80m -2 / - K8OD - / - 2 Partial capture
10-06 04:21 80m -9 / - SM3WFR - / - 2 Partial capture
10-06 04:20 80m -12 / - SV3CEZ - / - 2 Partial capture
10-06 04:19 80m -9 / -4 YO3OBB +3 / -1 5 ✓ Full exchange observed
10-06 04:15 80m -8 / +8 IQ2AAH -6 / +9 4 ✓ Full exchange observed
10-06 04:14 80m -9 / - Z61DX - / +2 6 Partial capture
09-30 06:17 80m -22 / - PJ2/W4IPC - / +5 2 Partial capture
09-30 06:11 80m -20 / - HI8R - / +6 4 Partial capture
09-30 06:09 80m -20 / - PJ2/W4IPC - / +7 2 Partial capture
09-30 05:32 80m - / -18 DO5PAP -9 / - 3 ✓ Closing fragment
09-30 05:20 80m -22 / - SP100PKP - / +5 2 Partial capture
09-30 05:16 80m -11 / - W9JOY - / -9 2 ✓ Closing fragment
09-29 05:57 80m -20 / - K5UR - / -9 2 Partial capture
09-29 05:56 80m -16 / - KQ4EHW - / -5 4 Partial capture
09-29 05:52 80m -20 / - KQ4EHW - / -11 3 Partial capture
09-29 05:49 80m -15 / - OZ1KHA - / +1 2 Partial capture
09-29 05:46 80m -13 / - HI3RRR - / -7 5 Partial capture
09-29 05:37 80m -10 / -5 EA8DO -13 / - 3 ✓ Closing observed
09-29 05:36 80m -15 / - KB6DAD - / - 3 Partial capture
09-29 05:33 80m -16 / - OZ1KHA - / - 4 Partial capture
09-29 05:30 80m -17 / - SM6CCO - / +2 2 Partial capture
09-29 05:29 80m -16 / - W0RLD - / -10 3 Partial capture
09-29 05:22 80m -15 / - KA9EKJ - / - 2 Partial capture
09-29 05:15 80m -9 / - 9A3MA +1 / -4 4 ✓ Closing observed
09-29 05:14 80m -10 / -9 SP5TAE -3 / -24 9 ✓ Full exchange observed
09-29 05:12 80m -11 / - KD4HOU - / -16 3 Partial capture
09-29 05:11 80m - / -6 IV3DXW +16 / - 2 ✓ Closing fragment
09-29 05:06 80m - / -8 EA7UW -6 / - 2 ✓ Closing fragment
09-29 05:04 80m - / +6 M0PNN -4 / - 2 ✓ Closing fragment
09-29 05:01 80m -7 / -3 SP9HAX +10 / +3 5 ✓ Full exchange observed
09-29 04:59 80m -5 / - HI3RRR - / - 4 Partial capture
09-28 06:04 80m -20 / - M1FCV - / - 2 Partial capture
09-28 06:02 80m -16 / - G1VHD - / +7 2 Partial capture
09-28 06:01 80m - / +1 DM5KM +6 / - 2 ✓ Closing fragment
09-28 05:59 80m -17 / +9 G6CUT -13 / - 5 ✓ Full exchange observed
09-28 05:55 80m -18 / - DO2SGW - / - 2 Partial capture
09-28 05:51 80m -17 / - W0RLD - / -6 4 Partial capture

Recent FT8 messages decoded at SO8OO

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

80m 
UTC    dB Audio  Message
045330  -7 2443  OM2ZZ ON7HM RR73
045345 +18 2685  ON7HM OM2ZZ 73
045400 -10 2443  OM2ZZ ON7HM 73
050430 -24 2759  GW0KRL ON7HM RR73
050445  +4 2759  ON7HM GW0KRL 73
051030  -4 1310  ON7HM YT3MD -14 (x3)
051230  -8 1694  ON7HM IQ6MW RR73
051315 -19 2021  LA5ZUA ON7HM JO10 (x2)
051545 -11 2021  HB9CYT ON7HM JO10 (x4)
40m 
UTC    dB Audio  Message
070030 -19 2368  IU3LWI ON7HM +03
070130 -17 2324  M0YPA ON7HM JO10
070200 -18 2325  LB5AK ON7HM JO10
070230 -20 2325  CS8ABF ON7HM JO10 (x3)
070430 -17 2324  LB5AK ON7HM +01
070615 -18 1117  ON7HM LB5AK R-07 (x3)
070930 -20  934  SA7BKX ON7HM JO10
071145 -10 2637  ON7HM F2VX/P -07
071400 -17  935  SA7BKX ON7HM RR73
071900  +4 1929  ON7HM DK6WH -02 (x2)
20m 
UTC    dB Audio  Message
123830 +11 2288  9A5JU ON7HM R+04 (x4)
124100  +4 1906  9A3AUH ON7HM JO10 (x3)
124230  +6 1906  UT2UB ON7HM JO10 (x4)
124445  +8 1906  SP7OK ON7HM JO10 (x2)
124545  +6 1906  TA2ZLM ON7HM JO10 (x2)
10m 
UTC    dB Audio  Message
114300 -13 2070  UX7UU ON7HM JO10 (x2)
114400 -17 2070  S56P ON7HM +07 (x2)
114500 -13 2070  UX7UU ON7HM RR73 (x2)
114700 -17 2034  JE2LPC ON7HM JO10
114830 -18 2035  JJ2IJU ON7HM JO10 (x2)
115000 -16 2035  CQ JA ON7HM JO10 (x2)
115600 -21 2035  JI8AQC ON7HM -06 (x3)
120030 -23 2035  OK1GSB ON7HM +02

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.

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