DO1YFF — 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: Fed. Rep. of Germany Most frequent locator attributed to this token: JO42

Receiver-side FT8 activity involving DO1YFF, decoded by SO8OO in southeastern Poland. 1,245 FT8 messages attributed to this token as transmitter, on 160m, 80m, 10m, across 67 UTC dates in the available aggregate history. Observed between 2026-06-07 and 2026-10-19.

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 1,245 FT8 messages attributed to DO1YFF as the transmitting token by decoded message structure across 67 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (74%), followed by 160 m (22%) and 10 m (3%). Most decodes (74%) fell within the six-hour window 19:00-01:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -7 dB.

Overview

1,245

Messages attributed

UTC dates decoded

199

Active 15-min windows

-7 dB

Estimated median S/N

Bands

160m · 278 80m · 924 10m · 43

First attributed message: 2026-06-07
Last attributed message: 2026-10-19 20:09 UTC

Observed FT8 message patterns

Attributed sample: 1,245 messages
Active dates: 67 UTC dates
Estimated median S/N: -7 dB
Estimated 10th-90th percentile: -17 to +2 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 170, moderate (-15 to -9 dB) 346, strong (≥ -8 dB) 729.

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 DO1YFF in decoded directed-looking exchanges:

IU4QQE · Italy ×2 ON1JP · Belgium ×2 M3NRX · England DD3KF · Fed. Rep. of Germany DL1AQU · Fed. Rep. of Germany DL1YEG · Fed. Rep. of Germany DL8BAO · Fed. Rep. of Germany DL9KM · Fed. Rep. of Germany EB1LA · Spain ES2AJ · Estonia F4EGM · France F4JUQ · France

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 DO1YFF

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: JO42 · 773 decoded messages
SO8OO receiver locator: KN09VW
Locator-centre separation: 934 km (approx.)
Last such locator decoded: 2026-10-19 20:09 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	DO1YFF S/N	Counterpart	Counterpart S/N	Msgs	Capture
10-16 05:36	80m	-10 / -	K4YT	- / -17	5	Partial capture
10-16 05:36	80m	- / -11	OM3ZAS	+2 / -	2	Partial capture
10-16 05:33	80m	-8 / -	IZ2EWN	-16 / -19	6	✓ Closing observed
10-16 05:32	80m	-8 / -	DO5PY	- / -14	2	✓ Closing fragment
10-16 05:20	80m	-9 / -	C31KC	-22 / -16	4	✓ Closing observed
10-15 06:30	80m	-20 / -	DO7BE	- / -9	2	✓ Closing fragment
10-15 06:28	80m	-15 / -	F1PSX	- / -18	2	✓ Closing fragment
10-15 06:21	80m	- / -3	OK1FED	+9 / -	3	✓ Closing fragment
10-15 06:16	80m	-16 / -	DO5HCS	-24 / -14	3	✓ Closing observed
10-15 06:12	80m	- / -11	DO1FZL	-14 / -	4	✓ Closing fragment
10-15 06:07	80m	- / -	ON8WR	-15 / -	3	✓ Closing fragment
10-15 05:58	80m	-15 / -	N0WUD	- / -	8	Partial capture
10-14 05:14	160m	-21 / -	F4JUQ	- / -4	4	✓ Closing fragment
10-14 05:11	160m	-14 / -	G4RGK	-22 / -5	5	✓ Closing observed
10-12 19:01	160m	-15 / -	SV7BVM	- / -	2	Partial capture
10-12 18:40	80m	-2 / -	4Z5AV	- / -	3	Partial capture
10-12 18:35	80m	-7 / -	9H6C	- / -19	8	✓ Closing fragment
10-11 19:51	160m	-2 / -	R9SAP	- / -	2	Partial capture
10-11 19:48	160m	+4 / -	GM2OT	- / -	4	Partial capture
10-11 19:45	160m	+2 / -9	HA6NN	+3 / -18	6	✓ Full exchange observed
10-11 19:45	160m	+4 / -	F4EGM	- / -11	2	✓ Closing fragment
10-11 19:40	80m	-5 / 0	OK1TRJ	+11 / -	4	✓ Closing observed
10-11 19:35	80m	- / -3	DO6MFD	-10 / -	3	✓ Closing fragment
10-09 23:48	80m	-15 / -19	EC5M	-18 / -16	5	✓ Full exchange observed
10-09 23:43	160m	-5 / -	CT2GQA	- / -	5	Partial capture
10-09 23:36	160m	-4 / -	UN0GY	- / -20	11	✓ Closing fragment
10-09 23:33	160m	-5 / -22	LZ2IP	+18 / +2	5	✓ Full exchange observed
10-09 05:38	80m	-18 / -	F5LMJ	- / -11	4	✓ Closing fragment
10-09 05:36	80m	-16 / +4	OZ1BM	-6 / +1	4	✓ Full exchange observed
10-09 05:34	80m	-19 / -1	IZ2QPP	-4 / -7	6	✓ Full exchange observed
10-09 05:29	80m	-24 / -	OZ1BM	+2 / -5	3	Partial capture
10-09 05:28	80m	-14 / -5	DO7RMS	+2 / -8	5	✓ Full exchange observed
10-09 05:28	80m	-20 / -11	IN3OWY	-6 / -3	6	✓ Full exchange observed
10-08 20:20	160m	-10 / -	RA0AF	- / -	6	Partial capture
10-08 20:17	160m	-7 / -	ER1BSV	- / -	5	Partial capture
10-08 20:10	160m	-9 / -	UB3IBG	- / -	9	Partial capture
10-08 20:06	160m	-8 / -15	OI5AY	+1 / -6	7	✓ Full exchange observed
10-08 20:04	160m	-14 / -	SM2LIY	+5 / +1	3	✓ Closing observed
10-08 20:01	160m	-14 / -18	OM3PC	+12 / +1	5	✓ Full exchange observed
10-07 19:21	80m	-3 / -	IQ2AAH	- / -15	5	✓ Closing fragment
10-07 19:11	80m	-3 / +7	DL7PIA	-18 / -12	5	✓ Full exchange observed
10-07 18:54	80m	-3 / -	RA0SMS	- / -	10	Partial capture
10-07 18:39	80m	-9 / -	DG4KAI	- / -1	2	Partial capture
10-07 18:34	80m	-6 / +6	IU2THY	+8 / -	3	✓ Closing observed
10-07 18:33	80m	- / -	DG4KAI	+1 / -	2	Partial capture
10-07 07:43	80m	-16 / -	G8KHF	- / -13	2	Partial capture
10-07 06:26	80m	-18 / -	DG2EBG	-15 / -8	7	✓ Closing observed
10-07 06:23	80m	-21 / -9	DO7TTR	-6 / -10	3	✓ Full exchange observed
10-07 06:23	80m	- / -11	DL3BH	-16 / -	6	✓ Closing fragment
10-07 06:21	80m	-22 / -	EA1AHP	- / -12	2	✓ Closing fragment

Recent FT8 messages decoded at SO8OO

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

10m

UTC    dB Audio  Message
070100 -10  998  M3NRX DO1YFF JO42 (x3)
092545 -20 2184  DO1YFF 5Z4VJ -14

160m

UTC    dB Audio  Message
195200  -3 3026  R9SAP DO1YFF JO42
190145  -8 1177  SV7BVM DO1YFF JO42 (x2)
051115 -12 1716  G4RGK DO1YFF JO42 (x3)
051230 -22 1324  DO1YFF G4RGK RR73
051245 -18 1716  G4RGK DO1YFF 73
051400 -21 1716  F4JUQ DO1YFF JO42 (x4)
051730 -22 1716  <...> DO1YFF JO42
172915 -16 2000  9H1ES DO1YFF JO42
200915 -12 1045  S51XA DO1YFF JO42

80m

UTC    dB Audio  Message
053315 -17 1432  DO1YFF IZ2EWN JN45
053345 -24 1862  DO1YFF K4YT FM19
053345 -16 1432  DO1YFF IZ2EWN JN45
053400  -9 1862  IZ2EWN DO1YFF -19 (x4)
053615  +3 1861  DO1YFF OM3ZAS -11
053630 -10 1861  K4YT DO1YFF -17
053645  +0 1861  DO1YFF OM3ZAS -11
053700 -13 1861  K4YT DO1YFF -17 (x5)

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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