OH8KTX — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Finland Most frequent locator attributed to this token: KP24

Receiver-side FT8 activity involving OH8KTX, decoded by SO8OO in southeastern Poland. 62 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, across 11 UTC dates in the available aggregate history. Observed between 2026-06-19 and 2026-09-22.

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 62 FT8 messages attributed to OH8KTX as the transmitting token by decoded message structure across 11 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (50%), followed by 40 m (39%) and 80 m (11%). Several six-hour UTC windows tied for the largest share (63%), so no unique busiest interval is claimed. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

80m · 7 40m · 24 20m · 31

First attributed message: 2026-06-19
Last attributed message: 2026-09-22 02:22 UTC

Observed FT8 message patterns

Attributed sample: 62 messages
Active dates: 11 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -18 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 12, moderate (-15 to -9 dB) 22, strong (≥ -8 dB) 28.

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 OH8KTX in decoded directed-looking exchanges:

OZ7CL · Denmark ×2 CA6SNT · Chile IQ0OS · Italy DG2SEG · Fed. Rep. of Germany F1DXP · France F4HTA · France GM0DYU · Scotland M0ABG · England OH3JF · Finland ON1JP · Belgium VE2OPR · Canada YO4NT · Romania

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 OH8KTX

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: KP24 · 30 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 1,630 km (approx.)
Last such locator decoded: 2026-09-22 02:21 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	OH8KTX S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-22 02:20	40m	-16 / -15	SV9QWC	-14 / -19	6	✓ Full exchange observed
09-22 02:15	40m	-12 / -16	IZ5WTV	+8 / -	10	Partial capture
09-22 02:10	40m	0 / -	A61DD	- / -	3	Partial capture
09-07 17:43	80m	-9 / -18	YO9XC	+10 / -6	10	✓ Full exchange observed
09-07 17:39	80m	- / -10	OZ7CL	-7 / -	6	✓ Closing fragment
09-07 17:34	40m	-10 / -12	DL6NDN	+10 / -	4	✓ Closing observed
09-07 17:32	40m	-21 / -4	UW5KW	0 / -	4	✓ Closing observed
09-07 17:28	40m	- / -11	HA3IC	+6 / -	2	✓ Closing fragment
08-30 15:26	20m	+7 / -	<...>	- / 0	2	Partial capture
08-30 15:20	20m	0 / -	K2ZJ	- / -11	7	Partial capture
08-29 07:20	20m	- / -4	F1DXP	+4 / -	2	✓ Closing fragment
08-28 08:14	20m	-18 / +3	CT7AUT	-9 / -	2	Partial capture
08-28 08:00	20m	- / -	EA1FMJ	-10 / -	2	Partial capture
08-28 07:50	20m	-16 / -	S55A	- / -5	3	Partial capture
08-27 16:32	20m	- / -9	ON1JP	-20 / -	2	✓ Closing fragment
08-27 16:24	20m	- / -17	BG7BVI	-11 / -	2	Partial capture
08-27 16:23	20m	-18 / -	DG1FBA	- / -11	2	Partial capture
08-27 15:44	40m	-10 / -	<...>	- / -15	4	Partial capture
08-20 17:21	40m	-10 / -8	DL6EL	-4 / -13	7	✓ Full exchange observed
08-20 17:18	40m	-13 / -16	IW7DHC	0 / -3	5	✓ Full exchange observed
08-20 16:50	40m	- / -	UB4FGK	-9 / -	3	Partial capture
08-20 14:56	20m	- / -3	GM0DYU	-16 / -	3	✓ Closing fragment
08-20 06:51	20m	- / -10	YO4NT	+14 / -	2	✓ Closing fragment
08-20 06:49	20m	- / -13	F4HTA	-8 / -	3	✓ Closing fragment
08-19 10:24	20m	- / -14	SV9ANC	-12 / -	2	Partial capture
08-19 09:39	20m	-10 / -	DG2SEG	- / -14	2	✓ Closing fragment
08-02 05:28	40m	- / +1	DM8KM	-5 / -	2	✓ Closing fragment
08-02 05:03	40m	- / -	DH5BM	-22 / -	3	✓ Closing fragment
07-28 12:53	20m	- / +5	M0ABG	-6 / -	2	✓ Closing fragment
07-27 19:26	20m	- / -	R4FDW	-7 / -	8	Partial capture
07-27 17:07	20m	-2 / -	OH3JF	- / -15	3	✓ Closing fragment
07-27 17:06	20m	-4 / -	DC4QD	- / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
021600  +6 2382  OH8KTX IZ5WTV -16
021615 -12 2334  IZ5WTV OH8KTX KP24 (x2)
021700 +13 2382  OH8KTX IZ5WTV -08
021715  -9 2334  IZ5WTV OH8KTX KP24
021730  +9 2382  OH8KTX IZ5WTV -08 (x4)
022045 -17 2333  SV9QWC OH8KTX KP24 (x2)
022130 -22 1875  OH8KTX SV9QWC -15
022145 -19 2334  SV9QWC OH8KTX R-19
022200  -7 1875  OH8KTX SV9QWC RR73
022215 -13 2334  SV9QWC OH8KTX 73

80m

UTC    dB Audio  Message
174100  -3 2075  OH8KTX OZ7CL RR73 (x2)
174315 -12 2296  YO9XC OH8KTX KP24
174330  +8  744  OH8KTX YO9XC -18 (x3)
174445  -9 2297  YO9XC OH8KTX R-06
174500 +12  744  OH8KTX YO9XC RR73
174515  -8 2296  YO9XC OH8KTX R-06
174530 +10  744  OH8KTX YO9XC RR73
174545  -8 2297  YO9XC OH8KTX R-06
174600 +11  744  OH8KTX YO9XC RR73
014845 -11 2298  SP7OK OH8KTX KP24
015015 -14 2298  OV6ZM OH8KTX KP24
015815 -23 2298  R1943OD OH8KTX KP24

20m

UTC    dB Audio  Message
072115  +3 2871  OH8KTX F1DXP RR73
072215 -11 1377  OH8KTX PD0WL JO21
151945  -7 2357  M9YLR OH8KTX KP24
152045  -4  278  K2ZJ OH8KTX KP24 (x3)
152200  -8 2357  OH8KTX M9YLR -02
152215  +0  278  K2ZJ OH8KTX R-11 (x4)
152430  -5 1283  BG8HNC OH8KTX KP24
152645  +8 2955  <...> OH8KTX KP24 (x2)
152815  -2 1496  DH8KAM OH8KTX KP24

10m

UTC    dB Audio  Message
171700 -20 1283  OH8KTX CA6SNT RR73
173130 -16 2424  OH8KTX IQ0OS RR73

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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