YD1FRU — reception at SO8OO

Signals decoded by SO8OO in southeastern Poland. FT8 and CW have separate histories; all times are UTC.

FT8 activity

DXCC entity inferred from callsign: Indonesia Most frequent locator attributed to this token: OI33

Receiver-side FT8 activity involving YD1FRU, decoded by SO8OO in southeastern Poland. 155 FT8 messages attributed to this token as transmitter, on 80m, 40m, 10m, across 10 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-10-23.

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 155 FT8 messages attributed to YD1FRU as the transmitting token by decoded message structure across 10 UTC dates in the available aggregate history. The largest monitored-band total was 10 m (79%), followed by 40 m (20%) and 80 m (1%). Most decodes (79%) fell within the six-hour window 09:00-15:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -13 dB.

Overview

155

Messages attributed

UTC dates decoded

Active 15-min windows

-13 dB

Estimated median S/N

Bands

80m · 1 40m · 31 10m · 123

First attributed message: 2026-06-06
Last attributed message: 2026-10-23 12:02 UTC

Observed FT8 message patterns

Attributed sample: 155 messages
Active dates: 10 UTC dates
Estimated median S/N: -13 dB
Estimated 10th-90th percentile: -20 to -5 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 56, moderate (-15 to -9 dB) 67, strong (≥ -8 dB) 32.

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 YD1FRU in decoded directed-looking exchanges:

UI6O · European Russia ×2 CN8WK · Morocco CR7BUW · Portugal CS7BPG · Portugal CT2HEV · Portugal CT7AUT · Portugal DF6DBF · Fed. Rep. of Germany DJ1OR · Fed. Rep. of Germany DL1NEO · Fed. Rep. of Germany EA7AH · Spain EA9ACF · Ceuta & Melilla EG5DX · Spain

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 YD1FRU

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: OI33 · 71 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 10,219 km (approx.)
Last such locator decoded: 2026-10-23 11:59 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	YD1FRU S/N	Counterpart	Counterpart S/N	Msgs	Capture
11-02 11:41	40m	- / -	UA4FKT	-5 / -	4	Partial capture
10-23 13:20	10m	- / -	EA7Z	-2 / -	2	Partial capture
10-23 12:34	10m	- / 0	CT2HEV	-12 / -	3	✓ Closing fragment
10-23 12:29	10m	- / -	CR7BUW	-10 / -	3	✓ Closing fragment
10-23 12:29	10m	- / -	EA7Z	+9 / -	2	Partial capture
10-23 11:58	10m	-20 / -	DJ1OR	- / -13	2	✓ Closing fragment
10-23 11:56	10m	-23 / -	F4EBT	- / -4	2	✓ Closing fragment
10-23 10:42	10m	- / -	4X5CG	-13 / -	2	Partial capture
10-20 09:59	10m	- / -6	CN8WK	-2 / -	4	✓ Closing fragment
10-16 12:32	10m	- / +3	CS7BPG	-14 / -	2	✓ Closing fragment
10-16 11:57	10m	- / -	EA7AH	-9 / -	3	✓ Closing fragment
10-01 23:09	40m	- / -14	EI2JD	-6 / -	3	Partial capture
10-01 23:06	40m	- / -	PD2RLD	+3 / -	2	Partial capture
10-01 23:05	40m	- / -	R2DN	-3 / -	3	Partial capture
10-01 22:56	40m	- / -19	4Z5PT	-10 / -	2	Partial capture
10-01 22:52	40m	- / -	RD3FY	-4 / -	2	Partial capture
10-01 22:51	40m	- / -	G7SLB	-12 / -	2	Partial capture
10-01 22:48	40m	- / -	PA1CG	+1 / -	2	Partial capture
10-01 14:19	80m	- / -	UA4FKT	-15 / -	4	Partial capture
10-01 14:12	40m	- / -	RG6OR	-13 / -	2	Partial capture
10-01 14:03	40m	- / -13	EU1FQ	+3 / -	2	Partial capture
10-01 13:53	40m	- / -16	RU6CH	-6 / -	2	✓ Closing fragment
09-08 23:10	40m	- / -5	J38LD	-18 / -	2	✓ Closing fragment
09-07 09:17	10m	-21 / -	JL1JAH	- / -9	2	✓ Closing fragment
09-04 23:28	40m	- / -14	F4EGM	-11 / -	3	✓ Closing fragment
09-04 23:24	40m	- / -14	PD9DX	-11 / -	2	✓ Closing fragment
09-03 23:48	40m	- / -8	LZ1GC	-7 / -	2	✓ Closing fragment
09-03 23:38	40m	- / -14	TI4LAS	-13 / -	2	Partial capture
09-03 23:09	40m	-17 / -8	EG42SDC	-6 / -	2	Partial capture
09-03 23:07	40m	- / -20	LA6AFA	+1 / -	2	✓ Closing fragment
09-03 23:05	40m	-6 / -11	UI6O	+2 / -19	5	✓ Full exchange observed
09-01 23:30	40m	- / -	G1CEC	-16 / -	5	Partial capture
09-01 23:21	40m	-19 / -	SP9YGD	- / -16	2	Partial capture
09-01 23:20	40m	-19 / -18	EB4SM	-6 / -19	3	✓ Full exchange observed
09-01 23:17	40m	- / -	G1CEC	-15 / -	5	Partial capture
09-01 23:16	40m	-10 / -	LA0FA	- / -15	2	✓ Closing fragment
09-01 23:13	40m	-22 / -18	AM42SDC	-6 / -	2	Partial capture
09-01 23:12	40m	-19 / -20	UA3PY	+2 / -	5	✓ Closing observed
09-01 23:11	40m	- / -15	G7KHF	-4 / -	2	✓ Closing fragment
09-01 23:09	40m	- / -	G1CEC	-18 / -	3	Partial capture
08-27 23:25	40m	- / -11	US1VAA	+4 / -	2	✓ Closing fragment
08-27 23:21	40m	- / -20	S57TW	-7 / -	2	✓ Closing fragment
08-27 23:18	40m	-10 / -16	UW5IM	-1 / -22	4	✓ Full exchange observed
08-27 23:14	40m	-13 / -18	S57TW	+8 / -	6	Partial capture
08-27 23:13	40m	-8 / -4	EA7R	+4 / -	3	✓ Closing observed
08-27 23:11	40m	-23 / -19	CN8NS	-5 / -14	3	✓ Full exchange observed
08-27 23:08	40m	-8 / -	LB6B	- / -	2	Partial capture
08-27 23:06	40m	-18 / -	RZ1AS	-9 / -22	4	✓ Closing observed
08-27 23:02	40m	- / -14	GM4HYG	-7 / -	2	✓ Closing fragment
08-27 22:58	40m	- / -14	LB7ZG	+5 / -	4	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
225315  -3 2951  YD1FRU RD3FY KO85
225615  -8  988  YD1FRU 4Z5PT KM72 (x2)
230515  -6 2431  YD1FRU R2DN KO95 (x3)
230645  +3 2431  YD1FRU PD2RLD JO21 (x2)
230945  -5 2099  YD1FRU EI2JD -14 (x3)
114115  -5 2519  YD1FRU UA4FKT LO23 (x4)

10m

UTC    dB Audio  Message
115945 -20 1646  CQ YD1FRU OI33                        a1
120015 -17 1646  HA4UC YD1FRU -16
120215 -20 1646  OZ8XZL YD1FRU RR73
122945  +7  638  YD1FRU EA7Z IM67
122945 -10  718  YD1FRU CR7BUW IM58
123015 +11  638  YD1FRU EA7Z IM67
123115  -9  718  YD1FRU CR7BUW IM58 (x2)
123415 -10 1319  YD1FRU CT2HEV IM58 (x3)
123615  -7  571  YD1FRU EA9ACF RR73
132000  -3  897  YD1FRU EA7Z IM67 (x2)
132930 -21 1294  YD1FRU IT9PHU RR73

80m

UTC    dB Audio  Message
224145  +5 1032  YD1FRU SG5Z -14
225515 -21 1812  ZS6WAB YD1FRU OI33
141915 -16 1323  YD1FRU UA4FKT LO23 (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.

CW

No CW receptions recorded for this callsign in the last 30 days.

Explore CW reception at SO8OO

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