YT3BL — 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: Serbia Most frequent locator attributed to this token: JN95

Receiver-side FT8 activity involving YT3BL, decoded by SO8OO in southeastern Poland. 3,285 FT8 messages attributed to this token as transmitter, on 80m, 40m, 20m, 10m, across 49 UTC dates in the available aggregate history. Observed between 2026-06-14 and 2026-11-01.

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 3,285 FT8 messages attributed to YT3BL as the transmitting token by decoded message structure across 49 UTC dates in the available aggregate history. The largest monitored-band total was 80 m (79%), followed by 40 m (16%) and 20 m (5%). Most decodes (56%) fell within the six-hour window 01:00-07:00 UTC. Most successfully decoded messages attributed to this token fell in SO8OO's strong S/N range (93%); the estimated median was +7.4 dB.

Overview

3,285
Messages attributed
49
UTC dates decoded
219
Active 15-min windows
+7.4 dB
Estimated median S/N

Bands

80m · 2,585 40m · 523 20m · 152 10m · 25
First attributed message: 2026-06-14
Last attributed message: 2026-11-01 14:31 UTC

Observed FT8 message patterns

Attributed sample
3,285 messages
Active dates
49 UTC dates
Estimated median S/N
+7.4 dB
Estimated 10th-90th percentile
-6.1 to +17 dB
Recurring-pattern threshold
Met

SO8OO display ranges among successful decodes: weak (≤ -16 dB) 35, moderate (-15 to -9 dB) 209, strong (≥ -8 dB) 3,041.

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 YT3BL in decoded directed-looking exchanges:

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 YT3BL

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
JN95 · 2,376 decoded messages
SO8OO receiver locator
KN09VW
Locator-centre separation
536 km (approx.)
Last such locator decoded
2026-11-01 14:31 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 UTCBandYT3BL S/NCounterpartCounterpart S/NMsgsCapture
11-02 16:50 40m - / -12 R1TBG +2 / - 3 ✓ Closing fragment
11-01 14:30 40m 0 / - R4ADE - / - 2 Partial capture
11-01 14:27 40m -1 / +10 OK1DXR -2 / -7 5 ✓ Full exchange observed
11-01 14:27 40m +3 / -17 R4FCK -23 / -15 4 ✓ Full exchange observed
11-01 14:26 40m +4 / - YC4PCR - / - 2 Partial capture
11-01 14:23 40m +2 / -20 F1RCQ -7 / - 6 ✓ Closing observed
11-01 14:22 40m +3 / -2 9A60CBM -17 / +3 3 Partial capture
11-01 14:21 40m +4 / - 6W/IK2HKT - / - 2 Partial capture
10-31 17:07 80m +8 / - RX9YM - / - 2 Partial capture
10-31 17:04 80m +8 / - R6PAG - / - 4 Partial capture
10-31 16:56 40m -8 / - E71DOC - / - 2 Partial capture
10-31 16:52 40m - / - DL6NDI -11 / - 2 Partial capture
10-31 16:48 40m -7 / - E71DOC - / - 3 Partial capture
10-31 16:45 40m +6 / - RA6FCU/P - / -3 4 ✓ Closing fragment
10-31 16:35 40m -10 / - E71DOC - / - 6 Partial capture
10-31 16:29 40m -11 / +4 DD3ZZ +3 / -8 5 ✓ Full exchange observed
10-30 09:06 40m -11 / - HB9DLT - / -14 4 ✓ Closing fragment
10-29 15:27 40m -8 / - DS2CYI - / - 2 Partial capture
10-29 15:27 40m -2 / - DH2NJS -8 / -8 11 Partial capture
10-29 15:26 40m -8 / - OE7CMT -18 / -5 4 ✓ Closing observed
10-29 15:25 40m -6 / - RX9WM - / - 2 Partial capture
10-29 15:22 40m -6 / -14 RA4PIS -13 / -7 5 ✓ Full exchange observed
10-29 06:46 40m -3 / - SP9DPM/P - / - 22 Partial capture
10-29 05:52 80m +10 / - EA8SG - / -14 6 ✓ Closing fragment
10-28 05:18 40m - / - GJ0KYZ 0 / - 2 ✓ Closing fragment
10-27 16:48 80m -12 / - XX9TXN - / - 12 Partial capture
10-27 16:42 80m -15 / - XX9TXN - / - 3 Partial capture
10-27 16:24 80m -8 / - XX9TXN - / - 13 Partial capture
10-23 06:58 40m +2 / -4 DL9KM -9 / +3 7 ✓ Full exchange observed
10-23 06:56 40m +4 / -4 G8KHF -9 / -16 5 ✓ Full exchange observed
10-23 06:27 40m - / - EA1EA -8 / - 2 Partial capture
10-23 06:16 40m -4 / - IU8RFW - / +3 14 ✓ Closing fragment
10-23 06:16 40m -7 / - OK3NKO/P -9 / -3 5 ✓ Full exchange observed
10-23 05:46 40m +3 / - PY7ZC - / - 9 Partial capture
10-23 05:37 40m +7 / - PY7ZC - / - 5 Partial capture
10-23 03:54 80m +7 / - P4/WE9V - / -14 9 Partial capture
10-23 03:51 80m +13 / - LX/DF2SD - / - 6 Partial capture
10-23 03:48 80m +17 / - F8CFO - / - 6 Partial capture
10-23 03:47 80m +14 / - RQ7R - / - 2 Partial capture
10-23 03:45 80m +13 / - AA6KJ - / - 5 Partial capture
10-23 03:42 80m +7 / -14 R7DX +8 / -2 6 ✓ Full exchange observed
10-23 03:41 80m +4 / -11 VE1VOX -14 / -12 5 ✓ Full exchange observed
10-23 03:39 80m +15 / -1 HB0WR +4 / -3 5 ✓ Full exchange observed
10-23 03:37 80m +18 / - 9H1ES - / - 2 Partial capture
10-23 03:31 80m +15 / +4 4L7T -20 / -9 6 ✓ Full exchange observed
10-23 03:30 80m +9 / - WX2CX - / -13 10 ✓ Closing fragment
10-23 03:23 80m +14 / - XE2X - / -15 11 ✓ Closing fragment
10-23 03:21 80m +17 / - K1BZ - / - 4 Partial capture
10-23 03:18 80m +16 / - OH8D - / - 2 Partial capture
10-23 03:12 80m +13 / - OE1KRQ/P - / 0 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
142700  +6 2748  R4FCK YT3BL -15
142745  -3 1336  YT3BL OK1DXR JO60 (x2)
142830  -2 2749  OK1DXR YT3BL -07
142845 -23 1402  YT3BL R4FCK R-17
142845  +1 1336  YT3BL OK1DXR R+10
142900  +0 2749  OK1DXR YT3BL RR73
142930  +0 2748  R4FCK YT3BL RR73 (x2)
143045  -2 2748  R4ADE YT3BL JN95 (x2)
164730 -12 2567  YT3BL 3A2LF RR73
165045  -2  964  YT3BL R1TBG -12 (x3)
80m 
UTC    dB Audio  Message
165315 -11 2512  XX9TXN YT3BL JN95 (x3)
055215  -5 2860  EA8SG YT3BL JN95 (x6)
170400  +6 2728  R6PAG YT3BL JN95 (x4)
170700 +11 2728  RX9YM YT3BL JN95 (x2)
10m 
UTC    dB Audio  Message
081430 -10  816  YT3BL RD4AN LN19
115600 -13  286  YT3BL C50A +01
20m 
UTC    dB Audio  Message
063315  -7 1677  YT3BL RA6ALF LN05 (x3)
064615  -2 1276  YT3BL DL1UDO JO31 (x5)
071545  +6 2784  YT3BL KH6M EL96 (x3)
074230  +3 2704  YT3BL F6HUK -08 (x2)
133530  -6 1569  YT3BL 9H4CM -15
155845  -7 1421  YT3BL EA5JLN RR73

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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