YB5QZ — FT8 activity observed at SO8OO

DXCC entity inferred from callsign: Indonesia Most frequent locator attributed to this token: OJ00

Receiver-side FT8 activity involving YB5QZ, decoded by SO8OO in southeastern Poland. 1,363 FT8 messages attributed to this token as transmitter, on 160m, 80m, 60m, 40m, 20m, 10m, across 67 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-05.

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 1,363 FT8 messages attributed to YB5QZ as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (47%), followed by 40 m (28%) and 80 m (17%). Most decodes (86%) fell within the six-hour window 20:00-02:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -12.7 dB.

Overview

1,363

Messages attributed

UTC dates decoded

186

Active 15-min windows

-12.7 dB

Estimated median S/N

Bands

160m · 83 80m · 235 60m · 1 40m · 383 20m · 641 10m · 20

First attributed message: 2026-06-06
Last attributed message: 2026-10-05 00:08 UTC

Observed FT8 message patterns

Attributed sample: 1,363 messages
Active dates: 67 UTC dates
Estimated median S/N: -12.7 dB
Estimated 10th-90th percentile: -20 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 459, moderate (-15 to -9 dB) 551, strong (≥ -8 dB) 353.

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 YB5QZ in decoded directed-looking exchanges:

EI2KM · Ireland ×2 OH0Z · Aland Islands ×2 EC5M · Spain ×2 YL3AVN · Latvia ×2 EW6CB · Belarus LA8YJA · Norway LA9JKA · Norway LZ2EV · Bulgaria LZ2FU · Bulgaria OH3SR · Finland OH6CK · Finland SM4GOJ · Sweden

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 YB5QZ

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: OJ00 · 697 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 9,195 km (approx.)
Last such locator decoded: 2026-10-05 00:08 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	YB5QZ S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-05 00:08	40m	-15 / -3	EI2KM	+6 / -	5	✓ Closing observed
10-05 00:05	40m	-15 / -	IU5TRG	- / -13	2	✓ Closing fragment
10-05 00:02	40m	-14 / -	HF50HSP	- / -	2	Partial capture
10-05 00:01	40m	-14 / +3	KP2B	-6 / -	4	✓ Full exchange observed
10-04 23:57	40m	- / -18	IX1HPN	+1 / -	3	✓ Closing fragment
10-04 23:55	40m	-14 / -3	TA2VUZ	0 / -16	4	✓ Full exchange observed
10-04 23:54	40m	-18 / -	KP2B	- / -	2	Partial capture
10-04 23:29	60m	- / -16	TA4SSK	-12 / -	2	✓ Closing fragment
10-04 23:25	40m	-10 / -14	TI4LAS	-17 / -	5	Partial capture
10-04 23:20	40m	-14 / -	CX1DW	- / -	2	Partial capture
10-03 23:18	40m	-16 / -	OZ7CL	- / -18	5	✓ Closing fragment
10-03 23:17	40m	- / -	PT7YB	-5 / -	3	Partial capture
10-03 23:16	40m	-14 / -	PE5TDM	- / -11	2	✓ Closing fragment
10-03 23:14	40m	-14 / -	UT0IN	- / -7	2	Partial capture
10-03 23:13	40m	-16 / -	3Z4DX	- / +9	2	✓ Closing fragment
10-03 23:12	40m	- / -	PT7YB	-4 / -	4	Partial capture
10-03 23:07	40m	-10 / -	CT2IGO	- / -16	2	✓ Closing fragment
10-03 23:06	40m	- / -6	RN6LPC	-6 / -	3	Partial capture
10-03 23:03	40m	-11 / -13	C31CT	-4 / -12	12	✓ Full exchange observed
10-03 23:00	40m	-14 / -3	V47YA	-6 / -1	4	✓ Full exchange observed
10-01 20:39	160m	- / -15	EI2KM	+2 / -	7	✓ Closing fragment
09-30 22:32	80m	- / -23	EA1KE	-10 / -	6	✓ Closing fragment
09-30 22:32	80m	- / -	OH4LRP	+3 / -	2	Partial capture
09-30 22:31	80m	- / -20	HA1SU	+8 / -	3	✓ Closing fragment
09-30 21:43	160m	- / -22	OH0Z	0 / -	4	✓ Closing fragment
09-30 21:37	160m	- / -15	LA9JKA	-5 / -	9	✓ Closing fragment
09-30 21:34	160m	- / -18	OH6CK	+11 / -	5	✓ Closing fragment
09-30 21:10	160m	- / -19	UA4UAR	-12 / -	2	Partial capture
09-30 20:55	160m	- / -	OK2DA	+15 / -	6	Partial capture
09-30 20:54	160m	- / -23	EW6CB	-6 / -	6	✓ Closing fragment
09-30 20:54	160m	- / -12	OH3SR	+7 / -	3	✓ Closing fragment
09-30 20:44	160m	- / -23	OH3SR	-2 / -	2	Partial capture
09-30 20:38	160m	- / -22	OK2BPU	+9 / -	13	Partial capture
09-30 20:36	160m	- / -	EW6CB	+6 / -	4	Partial capture
09-30 20:36	160m	- / -	UG4L	-12 / -	3	Partial capture
09-29 23:17	40m	- / -11	IK2IQU	-16 / -	5	✓ Closing fragment
09-29 23:13	40m	-14 / -	VO2ET	- / -	4	Partial capture
09-29 22:53	80m	- / -	VA2WA	-7 / -	3	Partial capture
09-26 22:22	80m	- / -	UA0ACG	-10 / -	2	✓ Closing fragment
09-26 22:21	80m	- / -	PE2JMR	-4 / -	2	Partial capture
09-26 22:17	80m	- / -20	IZ0BVU	+10 / -	5	✓ Closing fragment
09-26 22:15	80m	- / -	DA6EE	+14 / -	2	Partial capture
09-26 22:14	80m	- / -	RX3ASQ	+6 / -	2	Partial capture
09-26 22:11	80m	- / -	LA7OY	-12 / -	2	✓ Closing fragment
09-26 22:06	80m	- / -16	IU8PYW	-5 / -	5	Partial capture
09-26 22:04	80m	- / -	DD6WF	+13 / -	2	Partial capture
09-26 22:04	80m	- / -	GI7LOU	-3 / -	5	Partial capture
09-26 22:04	80m	- / -	SP2MEF	+4 / -	3	Partial capture
09-26 22:03	80m	- / -15	UA3GX	-1 / -	14	✓ Closing fragment
09-26 21:50	160m	- / -7	SM4GOJ	-4 / -	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
000130 -14  936  KP2B YB5QZ R+12
000145  -8 1699  YB5QZ KP2B RR73
000200 -14  935  KP2B YB5QZ 73
000215  -9 2600  YB5QZ G7OOD IO83
000230 -15  937  HF50HSP YB5QZ OJ00 (x2)
000345 -14  936  YO2MKE YB5QZ -16
000545 -15  935  IU5TRG YB5QZ -13 (x2)
000800 -15  935  EI2KM YB5QZ OJ00
000845  +3 1185  YB5QZ EI2KM -03 (x4)
001715  -1 2778  YB5QZ PT7YB HI06

60m

UTC    dB Audio  Message
221630  -5 1221  YB5QZ DA0O JO30
221700  +8  403  YB5QZ EI6FR IO63
221700 -10 1221  YB5QZ DA0O JO30
221730  +9  403  YB5QZ EI6FR IO63
221730  -2 1221  YB5QZ DA0O JO30
221800  +4  403  YB5QZ EI6FR IO63
221800  -8 1221  YB5QZ DA0O JO30
221830  +6  403  YB5QZ EI6FR IO63
233000 -18 1191  6Y5HN YB5QZ OJ00
230015 -11 1400  YB5QZ DA0O JO30 (x4)
232930 -12  969  YB5QZ TA4SSK -16 (x2)

160m

UTC    dB Audio  Message
214100  +1 1558  YB5QZ LA9JKA R-15 (x2)
214300  -1 2483  YB5QZ OH0Z JP90 (x4)
215130  +7 1643  YB5QZ EI2KM IO63 (x8)
221330 -23 1430  YB5QZ UA9OR R-13

80m

UTC    dB Audio  Message
222230  -9 2440  YB5QZ UA0ACG RR73
225330  -9 2564  YB5QZ VA2WA FN36 (x3)
223115  +5 1658  YB5QZ HA1SU -20 (x2)
223215  -3 1279  YB5QZ OH4LRP KP32
223215 +11 1658  YB5QZ HA1SU RR73
223215 -14 1730  YB5QZ EA1KE IN63
223245  +9 1279  YB5QZ OH4LRP KP32
223245  -2 1730  YB5QZ EA1KE IN63 (x5)

10m

UTC    dB Audio  Message
095500  -7 2762  YB5QZ IU2CAT JN45 (x9)
091530 -21 1433  <...> YB5QZ OJ00 (x4)
092100 -21 1434  DN9TB YB5QZ -23 (x2)

20m

UTC    dB Audio  Message
012115 -15 1329  <...> YB5QZ OJ00 (x2)
012430 -17 1329  YV4PPC YB5QZ OJ00 (x7)
235645 -15 1440  YB5QZ HI3RMJ FK49 (x4)
020830  +6 1979  YB5QZ 9K2RT -05 (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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