YC2ALF — 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: OI42

Receiver-side FT8 activity involving YC2ALF, decoded by SO8OO in southeastern Poland. 89 FT8 messages attributed to this token as transmitter, on 20m, 10m, across 8 UTC dates in the available aggregate history. Observed between 2026-06-06 and 2026-08-26.

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 89 FT8 messages attributed to YC2ALF as the transmitting token by decoded message structure across 8 UTC dates in the available aggregate history. The largest monitored-band total was 20 m (96%), followed by 10 m (4%). Most decodes (93%) fell within the six-hour window 12:00-18:00 UTC. Received S/N was mixed across SO8OO's weak, moderate and strong ranges; the estimated median was -10 dB.

Overview

Messages attributed

UTC dates decoded

Active 15-min windows

-10 dB

Estimated median S/N

Bands

20m · 85 10m · 4

First attributed message: 2026-06-06
Last attributed message: 2026-08-26 15:18 UTC

Observed FT8 message patterns

Attributed sample: 89 messages
Active dates: 8 UTC dates
Estimated median S/N: -10 dB
Estimated 10th-90th percentile: -19 to -4 dB
Recurring-pattern threshold: Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 22, moderate (-15 to -9 dB) 29, strong (≥ -8 dB) 38.

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 YC2ALF in decoded directed-looking exchanges:

EX7DY · Kyrgyzstan OA1F · Peru HA9PP · Hungary ON4AOI · Belgium SP8ONV · Poland UI4I · European Russia UN7LZ · Kazakhstan UR1CCT · Ukraine UT5ZC · Ukraine

Most frequent locator attributed to YC2ALF

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: OI42
SO8OO receiver locator: KN09VW
Locator-centre separation: 10,446 km (approx.)
Last such locator decoded: 2026-06-16 12:52 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	YC2ALF S/N	Counterpart	Counterpart S/N	Msgs	Capture
09-28 14:25	40m	- / -15	UT5ZC	-7 / -	2	✓ Closing fragment
09-27 15:38	40m	- / -	R3EED	-17 / -	2	Partial capture
09-27 15:08	40m	- / -10	HA9PP	-1 / -	2	✓ Closing fragment
09-27 14:38	40m	- / -20	UI4I	-8 / -	2	✓ Closing fragment
09-21 13:36	40m	- / -	RZ4FWA	-16 / -	3	Partial capture
09-10 17:41	40m	- / -19	ON4AOI	+4 / -	2	✓ Closing fragment
09-10 17:41	40m	- / -	ON4IQ	+20 / -	3	Partial capture
09-05 18:23	40m	- / -	SP8ONV	-6 / -	2	✓ Closing fragment
09-05 18:08	40m	- / -14	UR1CCT	+14 / -	3	✓ Closing fragment
09-02 22:43	40m	- / -18	UN7LZ	+5 / -	2	✓ Closing fragment
08-31 13:11	20m	- / -15	RZ9A	-2 / -	3	Partial capture
08-25 12:53	20m	- / -16	UB4CJS	-5 / -	11	Partial capture
08-24 15:26	20m	- / -8	OH6IH	-5 / -	3	Partial capture

Recent FT8 messages decoded at SO8OO

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

40m

UTC    dB Audio  Message
174145  +5 1162  YC2ALF ON4AOI 73
174215 +15 2569  YC2ALF ON4IQ JO20
142300  -7 1709  YC2ALF R7DX R-16
133615 -20 2028  YC2ALF RZ4FWA LO23 (x3)
143830  -5 1056  YC2ALF UI4I R-20 (x2)
150830  -1 1192  YC2ALF HA9PP R-10 (x2)
151000 -16 1193  YC2ALF UA3GU -15
153830 -17  880  YC2ALF R3EED OR05 (x2)
142545  -9 1270  YC2ALF UT5ZC R-15 (x2)

10m

UTC    dB Audio  Message
144615 -14 1543  YC2ALF CT3IQ IM12
113800 -24 1610  YC2ALF A61FJ R-11

20m

UTC    dB Audio  Message
125300  -3 2050  YC2ALF UB4CJS -16 (x11)
151800 -17  466  AA6MU YC2ALF -19
131100  -1 1453  YC2ALF RZ9A R-15 (x3)

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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