ON7HM — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

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. 2,255 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 58 UTC dates in the available aggregate history. Observed between 2026-06-08 and 2026-10-21.

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 2,255 FT8 messages attributed to ON7HM as the transmitting token by decoded message structure across 58 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (59%), followed by 10 m (23%) and 40 m (13%). Several six-hour UTC windows tied for the largest share (72%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

2,255

Messages attributed

UTC dates decoded

233

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 1,327 40m · 296 20m · 118 10m · 514

First attributed message: 2026-06-08
Last attributed message: 2026-10-21 05:29 UTC

Observed FT8 message patterns

Attributed sample: 2,255 messages
Active dates: 58 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20.7 to -1 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 764, moderate (-15 to -9 dB) 805, strong (≥ -8 dB) 686.

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:

DJ2PW · Fed. Rep. of Germany ×3 9A5JU · Croatia ×2 HA0AA · Hungary ×2 F4FQY · France ×2 G8OO · England ×2 IK3OBX · Italy ×2 OK1WE · Czech Republic ×2 CT2GQA · Portugal ×2 F5LMJ · France ×2 K2FST · United States ×2 M8FQT · England ×2 ON4AZM · Belgium ×2

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 · 1,243 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,335 km (approx.)
Last such locator decoded: 2026-10-21 05:22 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 UTC	Band	ON7HM S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-21 05:20	40m	- / -13	IU5RPJ	-4 / -	3	✓ Closing fragment
10-21 05:16	40m	-19 / -19	RX3ASQ	-14 / -	3	✓ Closing observed
10-21 04:57	80m	-1 / -8	SV2DCD	+2 / -	5	✓ Closing observed
10-21 04:55	80m	0 / -	OH2CBQ	- / -	3	Partial capture
10-21 04:54	80m	0 / -	SV2BXH	- / -4	3	✓ Closing fragment
10-21 04:53	80m	+1 / -	OH5LF	- / -2	2	Partial capture
10-21 04:48	80m	-8 / -	G3TKT	-11 / -2	3	✓ Closing observed
10-21 04:44	80m	-7 / -	KD4EBL	- / -19	6	✓ Closing fragment
10-19 06:06	80m	-10 / -	DO2RDT	- / -19	3	✓ Closing fragment
10-19 06:04	80m	-15 / -	DH2DAM	- / -5	3	✓ Closing fragment
10-19 06:02	80m	-13 / -	KZ7Y	- / -12	3	Partial capture
10-19 06:01	80m	-12 / -	EG46PPA	- / -	2	Partial capture
10-19 05:54	80m	-10 / +7	OZ6G	0 / +8	5	✓ Full exchange observed
10-19 05:54	80m	-11 / -13	LY1DY	+18 / +2	4	✓ Full exchange observed
10-19 05:51	80m	-9 / -2	OK2TS	+10 / -1	5	✓ Full exchange observed
10-19 05:45	80m	-8 / -	KZ7Y	- / -	3	Partial capture
10-19 05:42	80m	-6 / -	PA0MUS	- / +6	2	Partial capture
10-19 05:42	80m	-7 / -4	IK3VZO	-8 / -	4	Partial capture
10-19 05:39	80m	-7 / -3	OV9A	-5 / +5	5	✓ Full exchange observed
10-19 05:38	80m	-8 / -	LA2XPA	- / +3	4	Partial capture
10-19 05:37	80m	-8 / -	OH5LF	- / -	2	Partial capture
10-19 05:34	80m	- / -1	F4EWK	+8 / -	2	✓ Closing fragment
10-19 05:31	80m	-15 / -8	OH4SS	-9 / -13	5	✓ Full exchange observed
10-19 05:30	80m	-11 / -	KA9ONW	- / -	2	Partial capture
10-19 05:29	80m	-10 / -	LX1ER	- / +4	2	Partial capture
10-19 05:27	80m	+1 / -	KZ7Y	- / -	2	Partial capture
10-17 05:53	80m	-10 / -	OH2CRB	- / -	2	Partial capture
10-17 05:50	80m	-8 / -12	IT9CAU	-13 / -13	6	✓ Full exchange observed
10-17 05:28	80m	-15 / -	WA4TED	- / -	3	Partial capture
10-17 05:26	80m	-23 / -	YY5EHT	- / -	2	Partial capture
10-17 05:23	80m	-13 / -	K1MSR	- / 0	3	✓ Closing fragment
10-17 05:22	80m	-8 / -	EU2ABM	- / -	2	Partial capture
10-17 05:20	80m	-8 / -	YY5EHT	- / -	2	Partial capture
10-17 05:18	80m	-9 / -	VA3SK	- / -4	3	✓ Closing fragment
10-17 05:16	80m	-8 / -	TI2SD	- / -3	7	Partial capture
10-16 05:30	80m	-18 / -	M9POB	- / -5	2	✓ Closing fragment
10-16 05:24	80m	-19 / -	YY5EHT	- / -7	3	Partial capture
10-16 05:19	80m	-15 / -	LY2MM	- / -	4	Partial capture
10-16 05:12	80m	-8 / -4	OH6GKW	-19 / -20	4	✓ Full exchange observed
10-16 05:01	80m	-18 / -9	SP7SZJ	+8 / +9	5	✓ Full exchange observed
10-16 04:59	80m	-12 / -	SP3DVO	- / -	2	Partial capture
10-16 04:58	80m	-13 / -	OH7KM	- / +7	3	Partial capture
10-16 04:56	80m	-12 / -	PJ4/DH8BQA	- / -	2	Partial capture
10-16 04:49	80m	-10 / -	VP2MAW	- / +1	2	Partial capture
10-16 04:47	80m	-8 / -	OH5YZ	- / -	2	Partial capture
10-16 04:46	80m	-2 / -	SP2MGR/P	- / -	2	Partial capture
10-16 04:42	80m	-5 / -	VP2MAW	- / -10	7	Partial capture
10-16 04:40	80m	-6 / -	W1FAM	- / -	2	Partial capture
10-16 04:40	80m	-10 / -	VE3OP	- / -	2	Partial capture
10-16 04:37	80m	-8 / -18	Z61DX	-8 / -4	6	✓ Full exchange observed

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
062045 -20 2025  DC7MF ON7HM JO10
060030 -17  970  CQ ON7HM JO10                         a1
060045  +1 1089  ON7HM HA8ZB -14 (x2)
060245  +3  638  ON7HM HB9ELE R+11 (x2)
051630 -11 1146  ON7HM RX3ASQ KO95 (x2)
051715 -19 2072  RX3ASQ ON7HM RR73
052030  -1 1965  ON7HM IU5RPJ -13 (x3)
052245 -22 2069  UR5ZGY ON7HM JO10
052915 -17 1469  SP5MXZ ON7HM +05
054115 -16 1815  ON7HM TA2VUZ -19

80m

UTC    dB Audio  Message
045245 -12 2273  YO2UKG ON7HM JO10
045315  +1 2273  OH5LF ON7HM JO10 (x2)
045415  +3 2273  SV2BXH ON7HM JO10 (x3)
045545  +3 2273  OH2CBQ ON7HM JO10 (x3)
045715  -1 2273  SV2DCD ON7HM JO10
045830  +4 2904  ON7HM SV2DCD -08 (x4)
050145  +4 2273  9A60CBM ON7HM +00

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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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