K8JH — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: United States Most frequent locator attributed to this token: EN73

Receiver-side FT8 activity involving K8JH, decoded by SO8OO in southeastern Poland. 68 FT8 messages attributed to this token as transmitter, on 80m, 40m, across 7 UTC dates in the available aggregate history. Observed between 2026-08-12 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 68 FT8 messages attributed to K8JH as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 40 m (88%), followed by 80 m (12%). Several six-hour UTC windows tied for the largest share (100%), so no unique busiest interval is claimed. Most successfully decoded messages attributed to this token fell in SO8OO's moderate S/N range (60%); the estimated median was -15 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-15 dB

Estimated median S/N

Bands

80m · 8 40m · 60

First attributed message: 2026-08-12
Last attributed message: 2026-09-22 01:37 UTC

Observed FT8 message patterns

Attributed sample: 68 messages
Active dates: 7 UTC dates
Estimated median S/N: -15 dB
Estimated 10th-90th percentile: -20 to -11 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 25, moderate (-15 to -9 dB) 41, strong (≥ -8 dB) 2.

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 K8JH in decoded directed-looking exchanges:

OZ9FF · Denmark RA0SE · Asiatic Russia EX7CQ · Kyrgyzstan F4HXJ · France G5TV · England K8AGB · United States UT9NA · Ukraine YO2LGK · Romania YO6LM · Romania 5B4ALJ · Cyprus 7X5CY · Algeria VP2MAA · Montserrat

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 K8JH

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: EN73 · 49 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 7,442 km (approx.)
Last such locator decoded: 2026-09-22 01:34 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	K8JH S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-22 01:38	40m	- / -	PE1NPS	+2 / -	2	Partial capture
09-22 01:37	40m	-8 / -	YO6LM	- / -13	2	✓ Closing fragment
09-22 01:35	40m	-10 / -	UT9NA	- / -7	2	✓ Closing fragment
09-22 01:33	40m	- / -	R4CY	+8 / -	5	Partial capture
09-22 01:33	40m	-17 / -	A61DD	- / -	3	Partial capture
09-22 00:15	80m	- / -7	DK7ZT	-3 / -	5	Partial capture
09-22 00:14	80m	-22 / -	SQ100PKP	- / -	2	Partial capture
09-19 02:56	40m	-18 / -	F4HXJ	-8 / -15	2	✓ Closing observed
09-19 02:53	40m	- / -	F4HXJ	-7 / -	2	Partial capture
09-18 02:16	40m	-19 / -	LZ936BA	- / -10	2	Partial capture
09-13 23:44	40m	-18 / -13	EX7CQ	+2 / -15	8	✓ Full exchange observed
09-13 01:47	80m	- / -	VP2MAA	-14 / -	2	✓ Closing fragment
09-13 01:35	80m	-18 / -14	7X5CY	-9 / -	4	✓ Closing observed
09-10 02:44	40m	-14 / -	K8AGB	- / -1	2	✓ Closing fragment
09-10 02:39	40m	-13 / -	OO0O	- / -14	3	Partial capture
09-09 02:35	40m	- / +10	IH9/IT9JUI	-17 / -	2	Partial capture
09-01 02:39	40m	- / -	F6FHZ	-14 / -	5	Partial capture
09-01 02:39	40m	- / -3	IZ8EYN	-4 / -	3	Partial capture
09-01 02:38	40m	-16 / -	<...>	- / -19	2	Partial capture
09-01 02:38	40m	- / -8	RD9M/3	+7 / -	2	Partial capture
09-01 02:29	40m	-13 / -	RI1FJL	- / -	13	Partial capture
09-01 02:20	40m	- / -	R3ST	-12 / -	2	Partial capture
09-01 02:11	40m	- / -	R3ST	-4 / -	2	Partial capture
09-01 02:09	40m	-14 / -	RI1FJL	- / -	18	Partial capture
09-01 02:01	40m	-14 / -	RI1FJL	- / -	2	Partial capture
09-01 02:00	40m	-14 / -6	G5TV	-2 / -10	7	✓ Full exchange observed
08-31 13:07	20m	- / -	F5IXN	0 / -	4	Partial capture
08-31 13:03	20m	- / -13	ON1JP	-2 / -	4	Partial capture
08-31 13:02	20m	- / -9	OZ9FF	-6 / -	5	✓ Closing fragment
08-31 00:20	40m	- / -	UN8FR	-8 / -	2	Partial capture
08-30 23:49	40m	- / -	G5TV	-7 / -	2	Partial capture
08-30 17:22	20m	- / -	DK7QJ	-15 / -	2	Partial capture
08-29 14:10	20m	- / -	R4FDK	+5 / -	4	Partial capture
08-29 14:09	20m	- / -	MW7TTA	-7 / -	3	Partial capture
08-27 18:28	20m	- / -	PD1ROS	-2 / -	4	Partial capture
08-27 18:24	20m	- / -8	ON1JP	+1 / -	3	Partial capture
08-12 01:26	80m	- / -	5B4ALJ	+8 / -	2	Partial capture
08-12 01:22	80m	- / -	G8OO	+7 / -	8	Partial capture
08-12 01:18	80m	-19 / -11	5B4ALJ	-1 / -14	11	✓ 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
025645  -8 2996  K8JH F4HXJ 73
013300 -17 1607  A61DD K8JH EN73 (x2)
013345 +12 2631  K8JH R4CY LO31
013400 -17 1607  A61DD K8JH EN73
013415  +6 2631  K8JH R4CY LO31 (x3)
013530 -11  710  UT9NA K8JH -07
013545  +9 2631  K8JH R4CY LO31
013600  -8  709  UT9NA K8JH RR73
013700 -11  710  YO6LM K8JH -13 (x2)
013815  +2 2087  K8JH PE1NPS JO22 (x2)

80m

UTC    dB Audio  Message
012630 +11 1765  K8JH 5B4ALJ KM64
013545 -18  913  7X5CY K8JH EN73 (x2)
013700 -11  564  K8JH 7X5CY -14 (x2)
014700 -14  996  K8JH VP2MAA +13 (x2)
015000 -16 1944  K8JH F5SJF -03
001400 -20 1401  SQ100PKP K8JH EN73 (x2)
001545  -8 1149  K8JH DK7ZT -07 (x5)

60m

UTC    dB Audio  Message
020015 -20 1329  K8JH D44TWO -08

20m

UTC    dB Audio  Message
130215  -4 2322  K8JH OZ9FF -09 (x3)
130315  +1 1603  K8JH ON1JP -13
130345 -22 1660  K8JH RA0SE RR73
130345  -7 2322  K8JH OZ9FF -09
130345  -2 1603  K8JH ON1JP -13
130445 -15 2321  K8JH OZ9FF RR73
130445  -2 1603  K8JH ON1JP -13 (x2)
130515 -15  914  K8JH G8IXM JO02
130715  -5 1789  K8JH F5IXN JN23 (x4)

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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