OH7FNB — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP41

Receiver-side FT8 activity involving OH7FNB, decoded by SO8OO in southeastern Poland. 152 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 14 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-09-17.

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 152 FT8 messages attributed to OH7FNB as the transmitting token by decoded message structure across 14 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (50%), followed by 80 m (30%) and 10 m (14%). The busiest six-hour window was 07:00-13:00 UTC, containing 45% of decodes. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

152

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 46 40m · 9 20m · 76 10m · 21

First attributed message: 2026-06-06
Last attributed message: 2026-09-17 00:53 UTC

Observed FT8 message patterns

Attributed sample: 152 messages
Active dates: 14 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -22 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 49, moderate (-15 to -9 dB) 62, strong (≥ -8 dB) 41.

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 OH7FNB in decoded directed-looking exchanges:

OH1XE · Finland OH2FNR · Finland OH2NAG · Finland OR7K · Belgium 9A3K · Croatia 9K2OK · Kuwait CT1BFP · Portugal EB5AL · Spain F4ACR · France F4LNM · France IK2OLD · Italy V31DL · Belize

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 OH7FNB

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: KP41 · 70 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,361 km (approx.)
Last such locator decoded: 2026-09-17 00:52 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.

Time UTC	Band	OH7FNB S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-21 00:38	40m	- / +1	F6FHZ	-13 / -	3	✓ Closing fragment
09-17 22:58	40m	- / -	PD1HBL	-22 / -	2	Partial capture
09-17 22:53	40m	- / -	UA4FKT	+7 / -	2	Partial capture
09-17 22:51	40m	- / -11	PA7ZZ	-12 / -	2	✓ Closing fragment
09-17 00:52	80m	-24 / -	EA3HMM	-10 / -12	4	Partial capture
09-17 00:51	80m	-23 / -	DO8JB	- / -8	2	✓ Closing fragment
09-17 00:49	80m	-24 / -12	YO4NF	+4 / -	4	✓ Full exchange observed
09-17 00:36	80m	-16 / -17	5B4AMM	-2 / -	4	✓ Closing observed
09-10 00:04	80m	- / -	DL9ATW	+6 / -	3	Partial capture
09-10 00:03	80m	-14 / -	AP2HA	- / -	2	Partial capture
09-10 00:01	80m	-11 / -	5Z4VJ	- / -	4	Partial capture
09-09 23:52	160m	- / -15	OR7K	-4 / -	2	✓ Closing fragment
09-01 21:49	160m	- / -5	OH2NAG	+3 / -	3	✓ Closing fragment
09-01 21:48	160m	- / +2	OH1XE	-3 / -	3	✓ Closing fragment
09-01 21:48	160m	- / -	UA4FKT	-11 / -	3	Partial capture
09-01 21:47	160m	- / +4	OH2FNR	-6 / -	3	✓ Closing fragment
09-01 21:40	80m	-10 / -	DA6IT	- / -3	2	✓ Closing fragment
08-28 22:02	80m	-6 / -	AP2N	- / -	3	Partial capture
08-28 21:59	80m	- / -	SP5CTY	+2 / -	3	Partial capture
08-28 21:58	80m	- / -7	OK1UOZ	+12 / -	12	Partial capture
08-28 21:53	80m	-8 / -	IZ5FSA	- / -25	2	✓ Closing fragment
08-28 21:53	80m	- / -	R1AV	+12 / -	2	Partial capture
08-28 21:52	80m	-4 / -	DA6OOM	- / -5	2	✓ Closing fragment
08-28 21:49	80m	-6 / -	CT3MD	-21 / +1	4	✓ Closing observed
08-17 14:05	20m	- / -11	F4FSY	-11 / -	2	Partial capture
08-14 20:08	20m	- / -13	CT1BFP	-15 / -	6	✓ Closing fragment
08-13 20:00	20m	- / -12	F4ACR	-5 / -	3	✓ Closing fragment
08-09 18:53	20m	- / -3	9A3K	+10 / -	3	✓ Closing fragment
08-01 05:28	20m	- / -13	IK2OLD	+7 / -	4	✓ Closing fragment
08-01 05:26	20m	- / -6	F4LNM	+1 / -	4	✓ Closing fragment
07-03 04:56	20m	- / -17	EB5AL	-3 / -	3	✓ Closing fragment
07-03 04:49	20m	- / -13	V31DL	-14 / -	3	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
225115  -9  600  OH7FNB PA7ZZ -11 (x2)
225315 +11 1325  OH7FNB UA4FKT LO23 (x3)
225845 -20 1326  OH7FNB PD1HBL JO21 (x2)
003815 -13  714  OH7FNB F6FHZ JN18 (x3)

80m

UTC    dB Audio  Message
003700  -2 2028  OH7FNB 5B4AMM RR73
003715 -16 2029  5B4AMM OH7FNB 73
004930 -24  885  CQ OH7FNB KP41
004945  +8  885  OH7FNB YO4NF -12
005000 -24  885  YO4NF OH7FNB R+18
005015  +1  886  OH7FNB YO4NF RR73
005030 -24  885  YO4NF OH7FNB 73
005100 -23  885  DO8JB OH7FNB -08 (x2)
005200 -24  884  CQ OH7FNB KP41
005230 -24  885  EA3HMM OH7FNB -12
005245 -13  650  OH7FNB PA1KDB JO21
005315 -11  516  OH7FNB EA3HMM JN00
005330 -24  885  EA3HMM OH7FNB -17
005345  -9  516  OH7FNB EA3HMM JN00

160m

UTC    dB Audio  Message
214715  -9  902  OH7FNB OH2FNR KP20 (x3)
214845  -8  901  OH7FNB UA4FKT LO23
214845  -3  503  OH7FNB OH1XE KP10
214915 -13  901  OH7FNB UA4FKT LO23
214915  -1  502  OH7FNB OH1XE R+02
214945 -13  901  OH7FNB UA4FKT LO23
214945  +2 2039  OH7FNB OH2NAG KP20
214945  -5  501  OH7FNB OH1XE 73
215015  +4 2039  OH7FNB OH2NAG R-05 (x2)
235230  -3 1995  OH7FNB OR7K -15 (x2)

20m

UTC    dB Audio  Message
185315 +10 2426  OH7FNB 9A3K JN65 (x3)
195715 -10 1222  OH7FNB DL3MN JN58
200045 -10 1223  OH7FNB F4ACR IN96 (x3)
200845 -15 1618  OH7FNB CT1BFP IM59 (x6)
140545 -10 1430  OH7FNB F4FSY -11 (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.

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