XU7O — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Cambodia Most frequent locator attributed to this token: OK21

Receiver-side FT8 activity involving XU7O, decoded by SO8OO in southeastern Poland. 1,347 FT8 messages attributed to this token as transmitter, on 80m, 20m, across 7 UTC dates in the available aggregate history. Observed between 2026-07-11 and 2026-08-24.

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 1,347 FT8 messages attributed to XU7O as the transmitting token by decoded message structure across 7 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (100%), followed by 80 m (0%). Most decodes (65%) fell within the six-hour window 18:00-00:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -8 dB.

Overview

1,347

Messages attributed

UTC dates decoded

120

Active 15-min windows

-8 dB

Estimated median S/N

Bands

80m · 1 20m · 1,346

First attributed message: 2026-07-11
Last attributed message: 2026-08-24 13:07 UTC

Observed FT8 message patterns

Attributed sample: 1,347 messages
Active dates: 7 UTC dates
Estimated median S/N: -8 dB
Estimated 10th-90th percentile: -14 to 0 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 59, moderate (-15 to -9 dB) 586, strong (≥ -8 dB) 702.

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 XU7O in decoded directed-looking exchanges:

GI1RXL · Northern Ireland ×3 DG8GAE · Fed. Rep. of Germany ×2 DH6MB · Fed. Rep. of Germany ×2 DK3BK · Fed. Rep. of Germany ×2 DL1AOB · Fed. Rep. of Germany ×2 DL1IG · Fed. Rep. of Germany ×2 DL7COC · Fed. Rep. of Germany ×2 E70SZ · Bosnia-Herzegovina ×2 EA5IT · Spain ×2 EB3BRC · Spain ×2 F5RMK · France ×2 IU3GOR · Italy ×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 XU7O

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: OK21 · 477 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 8,547 km (approx.)
Last such locator decoded: 2026-08-24 13:07 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	XU7O S/N	Counterpart	Counterpart S/N	Msgs	Capture
08-24 13:11	20m	- / -13	4Z4MU	-22 / -	4	Partial capture
08-24 13:07	20m	- / -22	OD5KU	-13 / -	3	Partial capture
08-24 13:07	20m	- / -	IZ6YMF	+3 / -	4	Partial capture
08-24 13:06	20m	- / -14	RN6MA	+21 / -	3	Partial capture
08-24 13:05	20m	- / -	IT9BXZ	-15 / -	5	Partial capture
08-24 13:04	20m	- / -	DL2DT	-8 / -	2	Partial capture
08-24 13:01	20m	- / -	GM3AND	-12 / -	7	Partial capture
08-24 13:01	20m	- / -	PD2PE	-18 / -	4	Partial capture
08-24 12:59	20m	- / -	RW6HP	-14 / -	4	Partial capture
08-24 12:55	20m	- / -	GM3AND	-12 / -	8	Partial capture
08-24 12:50	20m	- / -15	RN6MA	+17 / -	4	Partial capture
08-24 12:41	20m	- / -	RW6HP	-12 / -	2	Partial capture
08-24 12:39	20m	- / -	PD2PE	-18 / -	3	Partial capture
08-24 12:36	20m	- / -	RN5M	-7 / -	31	Partial capture
08-24 12:32	20m	- / -17	RN6MA	+22 / -	4	Partial capture
08-24 12:28	20m	- / -	RN5M	-3 / -	7	Partial capture
08-24 12:25	20m	- / -18	RN6MA	+18 / -	4	Partial capture
08-24 11:30	20m	- / -14	RZ6AKF	-1 / -	3	Partial capture
08-24 11:27	20m	- / -	RW6HP	-21 / -	3	Partial capture
08-24 11:19	20m	- / -	RW6HP	-21 / -	4	Partial capture
08-24 00:09	20m	-10 / -	JH6NPA	- / -21	2	✓ Closing fragment
08-24 00:07	20m	-10 / -16	K7AP	-13 / -5	4	✓ Full exchange observed
08-23 23:56	20m	-11 / -	GI5RPG	- / +7	2	Partial capture
08-23 23:50	20m	-6 / +3	EA7LHH	+7 / 0	5	✓ Full exchange observed
08-23 23:48	20m	-5 / -	JI3LOZ	- / +1	2	✓ Closing fragment
08-23 23:47	20m	-2 / -	9A2TN	- / -1	3	✓ Closing fragment
08-23 23:44	20m	+2 / -	YB9GAN	- / -8	2	✓ Closing fragment
08-23 23:43	20m	+1 / -13	I0PAX	-11 / +2	3	✓ Full exchange observed
08-23 23:39	20m	0 / -	UR5WCS	- / -20	3	✓ Closing fragment
08-23 23:37	20m	-4 / -	JH8WAH	- / -5	2	✓ Closing fragment
08-23 23:34	20m	-2 / -12	S57CNT	-20 / -25	4	✓ Full exchange observed
08-23 23:33	20m	-4 / -	DL2TOS	-4 / -18	6	✓ Closing observed
08-23 23:29	20m	-2 / -	EA3FKT	- / -12	2	✓ Closing fragment
08-23 23:28	20m	0 / -	EA5RW	- / 0	2	✓ Closing fragment
08-23 23:25	20m	-4 / -	TA3F	- / -11	2	✓ Closing fragment
08-23 23:15	20m	- / -10	LU3OZ	+1 / -	3	Partial capture
08-23 23:12	20m	- / -3	LU3OZ	+4 / -	2	Partial capture
08-23 22:59	80m	- / -24	E70SZ	+13 / -	3	✓ Closing fragment
08-23 22:57	20m	- / -	K4A	-2 / -	2	Partial capture
08-23 22:50	20m	- / -	K4A	+1 / -	2	Partial capture
08-23 22:48	80m	- / -16	IU8TIS	-6 / -	4	✓ Closing fragment
08-23 22:46	80m	- / -19	DH2PC	+9 / -	4	Partial capture
08-23 22:45	80m	- / -19	IZ8WDH	+5 / -	5	Partial capture
08-23 22:44	80m	- / -	IK2SGB	-2 / -	2	Partial capture
08-23 22:42	80m	- / -23	DK9WI	0 / -	3	✓ Closing fragment
08-23 22:42	80m	- / -	SP5ES	+16 / -	6	Partial capture
08-23 22:41	80m	- / -17	CT1EKY	-8 / -	6	✓ Closing fragment
08-23 22:40	20m	- / -	LU7DK	-13 / -	2	✓ Closing fragment
08-23 22:39	80m	- / -	LB0TH	-2 / -	6	Partial capture
08-23 22:37	20m	- / -16	TA1CCM	-21 / -	2	Partial capture

Recent FT8 messages decoded at SO8OO

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

20m

UTC    dB Audio  Message
130730 -12  501  CQ XU7O OK21                          a1
130745 +19  501  XU7O RN6MA -14
130745  -7 2383  XU7O OD5KU KM73
130745  +4  574  XU7O IZ6YMF JN63
130745 -23 1742  XU7O IT9BXZ JM76
130815 -13 2384  XU7O OD5KU R-22
130815  +6  574  XU7O IZ6YMF JN63
130845 -19 2384  XU7O OD5KU R-22
130845  +4  574  XU7O IZ6YMF JN63
130915 -21 1742  XU7O IT9BXZ JM76 (x2)
131145 -19 1385  XU7O 4Z4MU -13 (x4)

80m

UTC    dB Audio  Message
224645  +7 2303  XU7O DH2PC JN49
224715  +2 2595  XU7O IZ8WDH R-19
224715  +8 2333  XU7O DH2PC JN49
224745  +5 2595  XU7O IZ8WDH R-19
224745 +10 2333  XU7O DH2PC R-19
224815 -17 2122  XU7O IU8TIS JM88
224815 +11 2333  XU7O DH2PC R-19
224945  +1 2122  XU7O IU8TIS JM88 (x3)
225545 +10  412  XU7O E70SZ JN84 (x4)
231615 +16  335  XU7O SP5ES KO02

10m

UTC    dB Audio  Message
130045  -7  520  XU7O IZ8CPZ JN70
130045 -22 1888  XU7O IT9CMZ +09
130045 -18 2155  XU7O DN9OPA JN38
130045  -7  831  XU7O DM5OKR JO50
130115 -21 1888  XU7O IT9CMZ RR73
130115 -15 2155  XU7O DN9OPA JN38
130115  -7  830  XU7O DM5OKR JO50
130115  -2  426  XU7O DL1SGH JN58
130145 -23 1834  XU7O IW0DYI JN61
130145  -7  830  XU7O DM5OKR JO50
130215  -5  520  XU7O IZ8CPZ JN70
130215 -23 1834  XU7O IW0DYI JN61
130215 -23 1740  XU7O HB9CYN JN36
130215 -15  829  XU7O DM5OKR JO50
130345 -20 1740  XU7O HB9CYN JN36

40m

UTC    dB Audio  Message
215145  -1  485  XU7O CT3MD IM13
215215 -13 1154  XU7O RK3AW -21 (x2)
215245  +0  802  XU7O M7KNM IO93 (x2)
215345  +3  488  XU7O R3VA -17
215345  +2  802  XU7O M7KNM IO93
215415  -9  212  XU7O R3VA -17
215415  -6  802  XU7O M7KNM IO93
215415  -2  485  XU7O CT3MD IM13
215445 -13  212  XU7O R3VA -16 (x2)
215545 -13 2466  <XU7O> RD9M/3
215545  -5 1522  XU7O LA7WCA JP41
215645 -10 2465  XU7O RD9M/3

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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